diff --git a/core/api-doc-config.generated.json b/core/api-doc-config.generated.json
index 40aaff04..e0091b12 100644
--- a/core/api-doc-config.generated.json
+++ b/core/api-doc-config.generated.json
@@ -1,5 +1,5 @@
 {
-    "_generated": "Auto-generated by extract-jsdoc.js on 2026-07-10T06:40:05.097Z. Do not edit manually.",
+    "_generated": "Auto-generated by extract-jsdoc.js on 2026-07-10T12:57:44.874Z. Do not edit manually.",
     "methods": {
         "has": {
             "summary": "HTTP verb for the endpoint (e.g. GET, POST). */",
@@ -9,7 +9,7 @@
                 "type": "ExchangeHas",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:42"
+            "source": "BaseExchange.ts:43"
         },
         "implicitApi": {
             "summary": "Override in subclasses to force specific capability values.",
@@ -19,7 +19,7 @@
                 "type": "ImplicitApiMethodInfo[]",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:459"
+            "source": "BaseExchange.ts:460"
         },
         "loadMarkets": {
             "summary": "Load and cache all markets from the exchange into `this.markets` and `this.marketsBySlug`.",
@@ -36,7 +36,7 @@
                 "type": "Record<string, UnifiedMarket>",
                 "description": "Dictionary of markets indexed by marketId"
             },
-            "source": "BaseExchange.ts:572"
+            "source": "BaseExchange.ts:573"
         },
         "fetchMarkets": {
             "summary": "Fetch markets with optional filtering, search, or slug lookup.",
@@ -83,7 +83,63 @@
                 "ordering — exchanges may reorder or add markets between requests. For stable iteration\nacross pages, use `loadMarkets()` and paginate over `Object.values(exchange.markets)`.",
                 "Some exchanges (like Limitless) may only support status 'active' for search results."
             ],
-            "source": "BaseExchange.ts:609"
+            "source": "BaseExchange.ts:610"
+        },
+        "getAuthNonce": {
+            "summary": "Retrieves a cryptographic challenge string (nonce) from a Web3 exchange.",
+            "description": "Required for EIP-712 / wallet signature authentication workflows.",
+            "params": [
+                {
+                    "name": "walletAddress",
+                    "type": "string",
+                    "optional": false,
+                    "description": "walletAddress"
+                }
+            ],
+            "returns": {
+                "type": "AuthNonceResponse",
+                "description": "Result"
+            },
+            "source": "BaseExchange.ts:665"
+        },
+        "loginWithSignature": {
+            "summary": "Submits a completed wallet signature to exchange authentication endpoints ",
+            "description": "to acquire temporary API credentials or establish a valid session.",
+            "params": [
+                {
+                    "name": "walletAddress",
+                    "type": "string",
+                    "optional": false,
+                    "description": "walletAddress"
+                },
+                {
+                    "name": "signature",
+                    "type": "string",
+                    "optional": false,
+                    "description": "signature"
+                },
+                {
+                    "name": "nonce",
+                    "type": "string",
+                    "optional": false,
+                    "description": "nonce"
+                }
+            ],
+            "returns": {
+                "type": "SessionCredentials",
+                "description": "Result"
+            },
+            "source": "BaseExchange.ts:673"
+        },
+        "logout": {
+            "summary": "Programmatically terminates the active session or revokes the current credentials.",
+            "description": "Programmatically terminates the active session or revokes the current credentials.",
+            "params": [],
+            "returns": {
+                "type": "void",
+                "description": "Result"
+            },
+            "source": "BaseExchange.ts:681"
         },
         "fetchMarketsPaginated": {
             "summary": "Fetch markets with cursor-based pagination backed by a stable in-memory snapshot.",
@@ -110,7 +166,7 @@
                 "type": "PaginatedMarketsResult",
                 "description": "PaginatedMarketsResult with data, total, and optional nextCursor"
             },
-            "source": "BaseExchange.ts:664"
+            "source": "BaseExchange.ts:688"
         },
         "fetchEventsPaginated": {
             "summary": "Paginated variant of {@link fetchEvents}.",
@@ -137,7 +193,7 @@
                 "type": "PaginatedEventsResult",
                 "description": "PaginatedEventsResult with data, total, and optional nextCursor"
             },
-            "source": "BaseExchange.ts:733"
+            "source": "BaseExchange.ts:757"
         },
         "fetchEvents": {
             "summary": "Fetch events with optional keyword search.",
@@ -175,7 +231,7 @@
             "notes": [
                 "Some exchanges (like Limitless) may only support status 'active' for search results."
             ],
-            "source": "BaseExchange.ts:802"
+            "source": "BaseExchange.ts:826"
         },
         "fetchSeries": {
             "summary": "Fetch the recurring series (fourth tier above Event -> Market -> Outcome)",
@@ -192,7 +248,7 @@
                 "type": "UnifiedSeries[]",
                 "description": "Array of unified series. Always an array, including the singular-lookup case."
             },
-            "source": "BaseExchange.ts:841"
+            "source": "BaseExchange.ts:865"
         },
         "fetchMarket": {
             "summary": "Fetch a single market by lookup parameters.",
@@ -209,7 +265,7 @@
                 "type": "UnifiedMarket",
                 "description": "A single unified market"
             },
-            "source": "BaseExchange.ts:859"
+            "source": "BaseExchange.ts:883"
         },
         "fetchEvent": {
             "summary": "Fetch a single event by lookup parameters.",
@@ -226,7 +282,7 @@
                 "type": "UnifiedEvent",
                 "description": "A single unified event"
             },
-            "source": "BaseExchange.ts:959"
+            "source": "BaseExchange.ts:983"
         },
         "fetchEventMetadata": {
             "summary": "Fetch venue-native metadata for a specific event when the exchange",
@@ -243,7 +299,7 @@
                 "type": "Record<string, unknown>",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:976"
+            "source": "BaseExchange.ts:1000"
         },
         "fetchOHLCV": {
             "summary": "Fetch historical OHLCV (candlestick) price data for a specific market outcome.",
@@ -271,7 +327,7 @@
                 "Polymarket: outcomeId is the CLOB Token ID. Kalshi: outcomeId is the Market Ticker.",
                 "Common resolutions: '1m' | '5m' | '15m' | '1h' | '6h' | '1d'. Arbitrary intervals (e.g. '30s', '120s', '3h') accepted by venues that support them."
             ],
-            "source": "BaseExchange.ts:987"
+            "source": "BaseExchange.ts:1011"
         },
         "fetchOrderBook": {
             "summary": "Fetch the order book (bids/asks) for a specific outcome.",
@@ -300,7 +356,7 @@
                 "type": "OrderBook",
                 "description": "Order book with bids and asks. Returns OrderBook[] when"
             },
-            "source": "BaseExchange.ts:1002"
+            "source": "BaseExchange.ts:1026"
         },
         "fetchOrderBooks": {
             "summary": "Batch variant of {@link fetchOrderBook}. Fetches order books for",
@@ -317,7 +373,7 @@
                 "type": "Record<string, OrderBook>",
                 "description": "A map keyed by the input id (preserving the caller's exact"
             },
-            "source": "BaseExchange.ts:1030"
+            "source": "BaseExchange.ts:1054"
         },
         "fetchTrades": {
             "summary": "Fetch raw trade history for a specific outcome.",
@@ -343,7 +399,7 @@
             "notes": [
                 "Polymarket requires an API key for trade history. Use fetchOHLCV for public historical data."
             ],
-            "source": "BaseExchange.ts:1043"
+            "source": "BaseExchange.ts:1067"
         },
         "createOrder": {
             "summary": "Place a new order on the exchange.",
@@ -360,7 +416,7 @@
                 "type": "Order",
                 "description": "The created order"
             },
-            "source": "BaseExchange.ts:1060"
+            "source": "BaseExchange.ts:1084"
         },
         "buildOrder": {
             "summary": "Build an order payload without submitting it to the exchange.",
@@ -377,7 +433,7 @@
                 "type": "BuiltOrder",
                 "description": "A BuiltOrder containing the exchange-native payload"
             },
-            "source": "BaseExchange.ts:1074"
+            "source": "BaseExchange.ts:1098"
         },
         "submitOrder": {
             "summary": "Submit a pre-built order returned by buildOrder().",
@@ -394,7 +450,7 @@
                 "type": "Order",
                 "description": "The submitted order"
             },
-            "source": "BaseExchange.ts:1086"
+            "source": "BaseExchange.ts:1110"
         },
         "cancelOrder": {
             "summary": "Cancel an existing open order.",
@@ -411,7 +467,7 @@
                 "type": "Order",
                 "description": "The cancelled order"
             },
-            "source": "BaseExchange.ts:1096"
+            "source": "BaseExchange.ts:1120"
         },
         "fetchOrder": {
             "summary": "Fetch a specific order by ID.",
@@ -428,7 +484,7 @@
                 "type": "Order",
                 "description": "The order details"
             },
-            "source": "BaseExchange.ts:1106"
+            "source": "BaseExchange.ts:1130"
         },
         "fetchOpenOrders": {
             "summary": "Fetch all open orders, optionally filtered by market.",
@@ -445,7 +501,7 @@
                 "type": "Order[]",
                 "description": "Array of open orders"
             },
-            "source": "BaseExchange.ts:1116"
+            "source": "BaseExchange.ts:1140"
         },
         "fetchMyTrades": {
             "summary": "Fetch authenticated user trade history.",
@@ -488,7 +544,7 @@
                 "type": "UserTrade[]",
                 "description": "Array of user trades"
             },
-            "source": "BaseExchange.ts:1126"
+            "source": "BaseExchange.ts:1150"
         },
         "fetchClosedOrders": {
             "summary": "Fetch authenticated closed orders.",
@@ -527,7 +583,7 @@
                 "type": "Order[]",
                 "description": "Array of closed orders"
             },
-            "source": "BaseExchange.ts:1142"
+            "source": "BaseExchange.ts:1166"
         },
         "fetchAllOrders": {
             "summary": "Fetch authenticated order history across open and closed orders.",
@@ -566,7 +622,7 @@
                 "type": "Order[]",
                 "description": "Array of orders"
             },
-            "source": "BaseExchange.ts:1157"
+            "source": "BaseExchange.ts:1181"
         },
         "fetchPositions": {
             "summary": "Fetch current user positions across all markets.",
@@ -583,7 +639,7 @@
                 "type": "Position[]",
                 "description": "Array of user positions"
             },
-            "source": "BaseExchange.ts:1172"
+            "source": "BaseExchange.ts:1196"
         },
         "fetchBalance": {
             "summary": "Fetch account balances.",
@@ -600,7 +656,7 @@
                 "type": "Balance[]",
                 "description": "Array of account balances"
             },
-            "source": "BaseExchange.ts:1182"
+            "source": "BaseExchange.ts:1206"
         },
         "getExecutionPrice": {
             "summary": "Calculate the volume-weighted average execution price for a given order size.",
@@ -629,7 +685,7 @@
                 "type": "number",
                 "description": "Average execution price, or 0 if insufficient liquidity"
             },
-            "source": "BaseExchange.ts:1192"
+            "source": "BaseExchange.ts:1216"
         },
         "getExecutionPriceDetailed": {
             "summary": "Calculate detailed execution price information including partial fill data.",
@@ -658,7 +714,7 @@
                 "type": "ExecutionPriceResult",
                 "description": "Detailed execution result with price, filled amount, and fill status"
             },
-            "source": "BaseExchange.ts:1205"
+            "source": "BaseExchange.ts:1229"
         },
         "filterMarkets": {
             "summary": "Filter a list of markets by criteria.",
@@ -681,7 +737,7 @@
                 "type": "UnifiedMarket[]",
                 "description": "Filtered array of markets"
             },
-            "source": "BaseExchange.ts:1221"
+            "source": "BaseExchange.ts:1245"
         },
         "filterEvents": {
             "summary": "Filter a list of events by criteria.",
@@ -704,7 +760,7 @@
                 "type": "UnifiedEvent[]",
                 "description": "Filtered array of events"
             },
-            "source": "BaseExchange.ts:1381"
+            "source": "BaseExchange.ts:1405"
         },
         "watchOrderBook": {
             "summary": "Watch order book updates in real-time via WebSocket.",
@@ -733,7 +789,7 @@
                 "type": "OrderBook",
                 "description": "Promise that resolves with the current orderbook state"
             },
-            "source": "BaseExchange.ts:1477"
+            "source": "BaseExchange.ts:1501"
         },
         "watchOrderBooks": {
             "summary": "Watch multiple order books simultaneously via WebSocket.",
@@ -762,7 +818,7 @@
                 "type": "Record<string, OrderBook>",
                 "description": "Promise that resolves with order books keyed by ID"
             },
-            "source": "BaseExchange.ts:1490"
+            "source": "BaseExchange.ts:1514"
         },
         "unwatchOrderBook": {
             "summary": "Unsubscribe from a previously watched order book stream.",
@@ -779,7 +835,7 @@
                 "type": "void",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:1518"
+            "source": "BaseExchange.ts:1542"
         },
         "watchTrades": {
             "summary": "Watch trade executions in real-time via WebSocket.",
@@ -814,7 +870,7 @@
                 "type": "Trade[]",
                 "description": "Promise that resolves with recent trades"
             },
-            "source": "BaseExchange.ts:1531"
+            "source": "BaseExchange.ts:1555"
         },
         "watchAddress": {
             "summary": "Stream activity for a public wallet address",
@@ -837,7 +893,7 @@
                 "type": "SubscribedAddressSnapshot",
                 "description": "Promise that resolves with the latest SubscribedAddressSnapshot snapshot"
             },
-            "source": "BaseExchange.ts:1545"
+            "source": "BaseExchange.ts:1569"
         },
         "unwatchAddress": {
             "summary": "Stop watching a previously registered wallet address and release its resource updates.",
@@ -854,7 +910,7 @@
                 "type": "void",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:1558"
+            "source": "BaseExchange.ts:1582"
         },
         "close": {
             "summary": "Close all WebSocket connections and clean up resources.",
@@ -864,7 +920,7 @@
                 "type": "void",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:1567"
+            "source": "BaseExchange.ts:1591"
         },
         "fetchMarketMatches": {
             "summary": "Find the same or related market on other venues. Two modes:",
@@ -881,7 +937,7 @@
                 "type": "MatchResult[]",
                 "description": "Array of matched markets with relation and confidence"
             },
-            "source": "BaseExchange.ts:1581"
+            "source": "BaseExchange.ts:1605"
         },
         "fetchMatches": {
             "summary": "fetchMatches",
@@ -898,7 +954,7 @@
                 "type": "MatchResult[]",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:1597"
+            "source": "BaseExchange.ts:1621"
         },
         "fetchEventMatches": {
             "summary": "Find the same or related event on other venues. Two modes:",
@@ -915,7 +971,7 @@
                 "type": "EventMatchResult[]",
                 "description": "Array of matched events with market-level match details"
             },
-            "source": "BaseExchange.ts:1605"
+            "source": "BaseExchange.ts:1629"
         },
         "compareMarketPrices": {
             "summary": "Compare live prices for the same market across venues. Finds identity matches and returns side-by-side best bid/ask prices so you can spot price differences at a glance.",
@@ -932,7 +988,7 @@
                 "type": "PriceComparison[]",
                 "description": "Array of price comparisons across venues"
             },
-            "source": "BaseExchange.ts:1621"
+            "source": "BaseExchange.ts:1645"
         },
         "fetchRelatedMarkets": {
             "summary": "Find related markets across venues. Discovers subset/superset market relationships",
@@ -949,7 +1005,7 @@
                 "type": "PriceComparison[]",
                 "description": "Array of subset/superset matches with live prices"
             },
-            "source": "BaseExchange.ts:1631"
+            "source": "BaseExchange.ts:1655"
         },
         "fetchMatchedMarkets": {
             "summary": "fetchMatchedMarkets",
@@ -966,7 +1022,7 @@
                 "type": "MatchedMarketPair[]",
                 "description": "Result"
             },
-            "source": "BaseExchange.ts:1642"
+            "source": "BaseExchange.ts:1666"
         },
         "fetchMatchedPrices": {
             "summary": "fetchMatchedPrices",
@@ -983,7 +1039,7 @@
                 "type": "MatchedPricePair[]",
                 "description": "Array of matched market pairs with prices from each venue"
             },
-            "source": "BaseExchange.ts:1650"
+            "source": "BaseExchange.ts:1674"
         },
         "fetchHedges": {
             "summary": "fetchHedges",
@@ -1000,7 +1056,7 @@
                 "type": "PriceComparison[]",
                 "description": "Array of subset/superset matches with live prices"
             },
-            "source": "BaseExchange.ts:1661"
+            "source": "BaseExchange.ts:1685"
         },
         "fetchArbitrage": {
             "summary": "fetchArbitrage",
@@ -1017,7 +1073,7 @@
                 "type": "ArbitrageOpportunity[]",
                 "description": "Array of arbitrage opportunities sorted by spread"
             },
-            "source": "BaseExchange.ts:1671"
+            "source": "BaseExchange.ts:1695"
         },
         "watchPrices": {
             "summary": "Watch AMM price updates for a market address (Limitless only).",
diff --git a/core/src/BaseExchange.ts b/core/src/BaseExchange.ts
index 469a32c9..a98fa3ab 100644
--- a/core/src/BaseExchange.ts
+++ b/core/src/BaseExchange.ts
@@ -1,6 +1,7 @@
 import axios, { AxiosInstance, AxiosResponse, InternalAxiosRequestConfig } from 'axios';
 import { EventNotFound, MarketNotFound } from './errors';
 import { SubscribedAddressSnapshot, SubscriptionOption } from './subscriber/base';
+import { AuthNonceResponse, SessionCredentials } from './types';
 import {
     Balance,
     BuiltOrder,
@@ -661,6 +662,29 @@ export abstract class PredictionMarketExchange {
         return limit !== undefined ? markets.slice(start, start + limit) : markets.slice(start);
     }
 
+    /**
+     * Retrieves a cryptographic challenge string (nonce) from a Web3 exchange.
+     * Required for EIP-712 / wallet signature authentication workflows.
+     */
+    async getAuthNonce(walletAddress: string): Promise<AuthNonceResponse> {
+        throw new Error(`getAuthNonce not implemented for exchange ${this.id}`);
+    }
+
+    /**
+     * Submits a completed wallet signature to exchange authentication endpoints 
+     * to acquire temporary API credentials or establish a valid session.
+     */
+    async loginWithSignature(walletAddress: string, signature: string, nonce: string): Promise<SessionCredentials> {
+        throw new Error(`loginWithSignature not implemented for exchange ${this.id}`);
+    }
+
+    /**
+     * Programmatically terminates the active session or revokes the current credentials.
+     */
+    async logout(): Promise<void> {
+        throw new Error(`logout not implemented for exchange ${this.id}`);
+    }
+
     /**
      * Fetch markets with cursor-based pagination backed by a stable in-memory snapshot.
      *
diff --git a/core/src/exchanges/probable/auth.ts b/core/src/exchanges/probable/auth.ts
index 9916d7c0..bda4f019 100644
--- a/core/src/exchanges/probable/auth.ts
+++ b/core/src/exchanges/probable/auth.ts
@@ -4,6 +4,7 @@ import { createWalletClient, http } from 'viem';
 import { bsc, bscTestnet } from 'viem/chains';
 import { ExchangeCredentials } from '../../BaseExchange';
 import { PROBABLE_CHAIN_ID, PROBABLE_TESTNET_CHAIN_ID } from './config';
+import { AuthNonceResponse, SessionCredentials } from '../../types';
 
 /**
  * Manages Probable authentication and CLOB client initialization.
@@ -80,3 +81,49 @@ export class ProbableAuth {
         return this.walletAddress;
     }
 }
+
+/**
+ * Fetches a cryptographic nonce for EIP-712 wallet login.
+ */
+export async function getAuthNonce(walletAddress: string, callApi: Function): Promise<AuthNonceResponse> {
+    // OperationId based on Probable's OpenAPI spec for GET /public/api/v1/auth/nonce
+    const response = await callApi('getAuthNonce', { address: walletAddress });
+    
+    return {
+        nonce: response.nonce,
+        // Fallbacks based on how different versions of the spec name the message field
+        messageToSign: response.message || response.messageToSign || `Sign to login: ${response.nonce}`
+    };
+}
+
+/**
+ * Submits the signed nonce to generate an API Key triplet.
+ */
+export async function loginWithSignature(
+    walletAddress: string, 
+    signature: string, 
+    nonce: string, 
+    callApi: Function
+): Promise<SessionCredentials> {
+    // OperationId for POST /auth/login
+    const response = await callApi('postAuthLogin', { 
+        address: walletAddress, 
+        signature, 
+        nonce 
+    });
+    
+    return {
+        apiKey: response.apiKey,
+        apiSecret: response.apiSecret,
+        passphrase: response.passphrase,
+        expiresAt: response.expiresAt
+    };
+}
+
+/**
+ * Destroys the current API key session.
+ */
+export async function logoutSession(callApi: Function): Promise<void> {
+    // OperationId for POST /auth/logout
+    await callApi('postAuthLogout', {});
+}
\ No newline at end of file
diff --git a/core/src/router/types.ts b/core/src/router/types.ts
index d32a024a..e5599ff8 100644
--- a/core/src/router/types.ts
+++ b/core/src/router/types.ts
@@ -92,6 +92,20 @@ export interface FetchMarketMatchesParams {
     sort?: 'confidence' | 'volume' | 'priceDifference';
 }
 
+export interface AuthNonceResponse {
+    nonce: string;
+    messageToSign: string;
+    expiresAt?: number;
+}
+
+export interface SessionCredentials {
+    apiKey: string;
+    apiSecret: string;
+    passphrase?: string;
+    expiresAt?: number;
+    active?: boolean;
+}
+
 /** @deprecated Use {@link FetchMarketMatchesParams} instead. */
 export type FetchMatchesParams = FetchMarketMatchesParams;
 
diff --git a/core/src/server/method-verbs.json b/core/src/server/method-verbs.json
index 205be445..0fafdd8a 100644
--- a/core/src/server/method-verbs.json
+++ b/core/src/server/method-verbs.json
@@ -19,6 +19,40 @@
       }
     ]
   },
+  "getAuthNonce": {
+    "verb": "post",
+    "args": [
+      {
+        "name": "walletAddress",
+        "kind": "string",
+        "optional": false
+      }
+    ]
+  },
+  "loginWithSignature": {
+    "verb": "post",
+    "args": [
+      {
+        "name": "walletAddress",
+        "kind": "string",
+        "optional": false
+      },
+      {
+        "name": "signature",
+        "kind": "string",
+        "optional": false
+      },
+      {
+        "name": "nonce",
+        "kind": "string",
+        "optional": false
+      }
+    ]
+  },
+  "logout": {
+    "verb": "post",
+    "args": []
+  },
   "fetchMarketsPaginated": {
     "verb": "get",
     "args": [
diff --git a/core/src/server/openapi.yaml b/core/src/server/openapi.yaml
index 428cf7d9..83297f0c 100644
--- a/core/src/server/openapi.yaml
+++ b/core/src/server/openapi.yaml
@@ -210,6 +210,112 @@ paths:
       description: >-
         Fetch markets with optional filtering, search, or slug lookup. Always hits the exchange API — results reflect
         the live state at the time of the call.
+  '/api/{exchange}/getAuthNonce':
+    post:
+      summary: Get Auth Nonce
+      operationId: getAuthNonce
+      parameters:
+        - $ref: '#/components/parameters/ExchangeParam'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              title: GetAuthNonceRequest
+              type: object
+              properties:
+                args:
+                  type: array
+                  maxItems: 1
+                  items:
+                    type: string
+                  minItems: 1
+                credentials:
+                  $ref: '#/components/schemas/ExchangeCredentials'
+              required:
+                - args
+      responses:
+        '200':
+          description: Get Auth Nonce response
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/BaseResponse'
+                  - type: object
+                    properties:
+                      data:
+                        type: object
+      description: >-
+        Retrieves a cryptographic challenge string (nonce) from a Web3 exchange. Required for EIP-712 / wallet signature
+        authentication workflows.
+  '/api/{exchange}/loginWithSignature':
+    post:
+      summary: Login With Signature
+      operationId: loginWithSignature
+      parameters:
+        - $ref: '#/components/parameters/ExchangeParam'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              title: LoginWithSignatureRequest
+              type: object
+              properties:
+                args:
+                  type: array
+                  minItems: 3
+                  maxItems: 3
+                  items:
+                    oneOf:
+                      - type: string
+                      - type: string
+                      - type: string
+                credentials:
+                  $ref: '#/components/schemas/ExchangeCredentials'
+              required:
+                - args
+      responses:
+        '200':
+          description: Login With Signature response
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/BaseResponse'
+                  - type: object
+                    properties:
+                      data:
+                        type: object
+      description: >-
+        Submits a completed wallet signature to exchange authentication endpoints to acquire temporary API credentials
+        or establish a valid session.
+  '/api/{exchange}/logout':
+    post:
+      summary: Logout
+      operationId: logout
+      parameters:
+        - $ref: '#/components/parameters/ExchangeParam'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              title: LogoutRequest
+              type: object
+              properties:
+                args:
+                  type: array
+                  maxItems: 0
+                  items: {}
+                credentials:
+                  $ref: '#/components/schemas/ExchangeCredentials'
+      responses:
+        '200':
+          description: Logout response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/BaseResponse'
+      description: Programmatically terminates the active session or revokes the current credentials.
   '/api/{exchange}/fetchMarketsPaginated':
     get:
       summary: Fetch Markets Paginated
diff --git a/core/src/types.ts b/core/src/types.ts
index eb122413..71f4fa22 100644
--- a/core/src/types.ts
+++ b/core/src/types.ts
@@ -221,6 +221,17 @@ export interface UserTrade extends Trade {
     blockNumber?: number | null;
 }
 
+export interface AuthNonceResponse {
+    nonce: string;
+    messageToSign: string;
+}
+
+export interface SessionCredentials {
+    apiKey: string;
+    apiSecret: string;
+    passphrase?: string;
+    expiresAt?: number;
+}
 
 export interface QueuedPromise<T> {
     /** Internal: resolver for a queued promise. */
diff --git a/core/test/exchanges/auth.test.ts b/core/test/exchanges/auth.test.ts
new file mode 100644
index 00000000..332678fd
--- /dev/null
+++ b/core/test/exchanges/auth.test.ts
@@ -0,0 +1,51 @@
+import { getAuthNonce, loginWithSignature, logoutSession } from '../../src/exchanges/probable/auth';
+
+describe('Probable Auth Lifecycle', () => {
+    const mockWalletAddress = '0x1234567890abcdef1234567890abcdef12345678';
+    const mockSignature = '0xabc123...';
+    const mockNonce = 'random-nonce-string';
+
+    afterEach(() => {
+        jest.clearAllMocks();
+    });
+
+    it('should fetch and map nonce correctly', async () => {
+        const mockCallApi = jest.fn().mockResolvedValue({
+            nonce: mockNonce,
+            message: 'Sign this message to authenticate with Probable'
+        });
+
+        const result = await getAuthNonce(mockWalletAddress, mockCallApi);
+        
+        expect(mockCallApi).toHaveBeenCalledWith('getAuthNonce', { address: mockWalletAddress });
+        expect(result.nonce).toBe(mockNonce);
+        expect(result.messageToSign).toBe('Sign this message to authenticate with Probable');
+    });
+
+    it('should submit signature and map session credentials correctly', async () => {
+        const mockCallApi = jest.fn().mockResolvedValue({
+            apiKey: 'key-123',
+            apiSecret: 'secret-456',
+            passphrase: 'passphrase-789',
+            expiresAt: 1700000000000
+        });
+
+        const result = await loginWithSignature(mockWalletAddress, mockSignature, mockNonce, mockCallApi);
+        
+        expect(mockCallApi).toHaveBeenCalledWith('postAuthLogin', {
+            address: mockWalletAddress,
+            signature: mockSignature,
+            nonce: mockNonce
+        });
+        expect(result.apiKey).toBe('key-123');
+        expect(result.apiSecret).toBe('secret-456');
+    });
+
+    it('should trigger logout successfully', async () => {
+        const mockCallApi = jest.fn().mockResolvedValue({});
+
+        await logoutSession(mockCallApi);
+        
+        expect(mockCallApi).toHaveBeenCalledWith('postAuthLogout', {});
+    });
+});
\ No newline at end of file
diff --git a/docs/api-reference/openapi.json b/docs/api-reference/openapi.json
index 72ee155e..8d3f2ae5 100644
--- a/docs/api-reference/openapi.json
+++ b/docs/api-reference/openapi.json
@@ -650,6 +650,673 @@
         ]
       }
     },
+    "/api/{exchange}/getAuthNonce": {
+      "post": {
+        "summary": "Get Auth Nonce",
+        "operationId": "getAuthNonce",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/ExchangeParam"
+          }
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "title": "GetAuthNonceRequest",
+                "type": "object",
+                "properties": {
+                  "args": {
+                    "type": "array",
+                    "maxItems": 1,
+                    "items": {
+                      "type": "string"
+                    },
+                    "minItems": 1
+                  },
+                  "credentials": {
+                    "$ref": "#/components/schemas/ExchangeCredentials"
+                  }
+                },
+                "required": [
+                  "args"
+                ]
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Get Auth Nonce response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "allOf": [
+                    {
+                      "$ref": "#/components/schemas/BaseResponse"
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "data": {
+                          "type": "object"
+                        }
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          }
+        },
+        "description": "Retrieves a cryptographic challenge string (nonce) from a Web3 exchange. Required for EIP-712 / wallet signature authentication workflows.",
+        "security": [],
+        "x-codeSamples": [
+          {
+            "lang": "python",
+            "label": "Polymarket",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Polymarket(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Limitless",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Limitless(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Kalshi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Kalshi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "KalshiDemo",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.KalshiDemo(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Probable",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Probable(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Baozi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Baozi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Myriad",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Myriad(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Opinion",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Opinion(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Metaculus",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Metaculus(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Smarkets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Smarkets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "PolymarketUS",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.PolymarketUS(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Hyperliquid",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hyperliquid(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "GeminiTitan",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.GeminiTitan(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "SuiBets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.SuiBets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Rain",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Rain(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "python",
+            "label": "Hunch",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hunch(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.get_auth_nonce()"
+          },
+          {
+            "lang": "javascript",
+            "label": "Polymarket",
+            "source": "import { Polymarket } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Polymarket({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Limitless",
+            "source": "import { Limitless } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Limitless({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Kalshi",
+            "source": "import { Kalshi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Kalshi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "KalshiDemo",
+            "source": "import { KalshiDemo } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new KalshiDemo({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Probable",
+            "source": "import { Probable } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Probable({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Baozi",
+            "source": "import { Baozi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Baozi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Myriad",
+            "source": "import { Myriad } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Myriad({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Opinion",
+            "source": "import { Opinion } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Opinion({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Metaculus",
+            "source": "import { Metaculus } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Metaculus({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Smarkets",
+            "source": "import { Smarkets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Smarkets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "PolymarketUS",
+            "source": "import { PolymarketUS } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new PolymarketUS({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hyperliquid",
+            "source": "import { Hyperliquid } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hyperliquid({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "GeminiTitan",
+            "source": "import { GeminiTitan } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new GeminiTitan({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "SuiBets",
+            "source": "import { SuiBets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new SuiBets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Rain",
+            "source": "import { Rain } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Rain({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hunch",
+            "source": "import { Hunch } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hunch({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.getAuthNonce();"
+          }
+        ]
+      }
+    },
+    "/api/{exchange}/loginWithSignature": {
+      "post": {
+        "summary": "Login With Signature",
+        "operationId": "loginWithSignature",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/ExchangeParam"
+          }
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "title": "LoginWithSignatureRequest",
+                "type": "object",
+                "properties": {
+                  "args": {
+                    "type": "array",
+                    "minItems": 3,
+                    "maxItems": 3,
+                    "items": {
+                      "oneOf": [
+                        {
+                          "type": "string"
+                        },
+                        {
+                          "type": "string"
+                        },
+                        {
+                          "type": "string"
+                        }
+                      ]
+                    }
+                  },
+                  "credentials": {
+                    "$ref": "#/components/schemas/ExchangeCredentials"
+                  }
+                },
+                "required": [
+                  "args"
+                ]
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Login With Signature response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "allOf": [
+                    {
+                      "$ref": "#/components/schemas/BaseResponse"
+                    },
+                    {
+                      "type": "object",
+                      "properties": {
+                        "data": {
+                          "type": "object"
+                        }
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          }
+        },
+        "description": "Submits a completed wallet signature to exchange authentication endpoints to acquire temporary API credentials or establish a valid session.",
+        "security": [],
+        "x-codeSamples": [
+          {
+            "lang": "python",
+            "label": "Polymarket",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Polymarket(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Limitless",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Limitless(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Kalshi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Kalshi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "KalshiDemo",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.KalshiDemo(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Probable",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Probable(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Baozi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Baozi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Myriad",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Myriad(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Opinion",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Opinion(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Metaculus",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Metaculus(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Smarkets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Smarkets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "PolymarketUS",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.PolymarketUS(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Hyperliquid",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hyperliquid(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "GeminiTitan",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.GeminiTitan(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "SuiBets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.SuiBets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Rain",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Rain(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "python",
+            "label": "Hunch",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hunch(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.login_with_signature()"
+          },
+          {
+            "lang": "javascript",
+            "label": "Polymarket",
+            "source": "import { Polymarket } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Polymarket({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Limitless",
+            "source": "import { Limitless } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Limitless({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Kalshi",
+            "source": "import { Kalshi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Kalshi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "KalshiDemo",
+            "source": "import { KalshiDemo } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new KalshiDemo({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Probable",
+            "source": "import { Probable } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Probable({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Baozi",
+            "source": "import { Baozi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Baozi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Myriad",
+            "source": "import { Myriad } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Myriad({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Opinion",
+            "source": "import { Opinion } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Opinion({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Metaculus",
+            "source": "import { Metaculus } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Metaculus({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Smarkets",
+            "source": "import { Smarkets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Smarkets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "PolymarketUS",
+            "source": "import { PolymarketUS } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new PolymarketUS({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hyperliquid",
+            "source": "import { Hyperliquid } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hyperliquid({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "GeminiTitan",
+            "source": "import { GeminiTitan } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new GeminiTitan({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "SuiBets",
+            "source": "import { SuiBets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new SuiBets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Rain",
+            "source": "import { Rain } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Rain({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hunch",
+            "source": "import { Hunch } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hunch({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.loginWithSignature();"
+          }
+        ]
+      }
+    },
+    "/api/{exchange}/logout": {
+      "post": {
+        "summary": "Logout",
+        "operationId": "logout",
+        "parameters": [
+          {
+            "$ref": "#/components/parameters/ExchangeParam"
+          }
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "title": "LogoutRequest",
+                "type": "object",
+                "properties": {
+                  "args": {
+                    "type": "array",
+                    "maxItems": 0,
+                    "items": {}
+                  },
+                  "credentials": {
+                    "$ref": "#/components/schemas/ExchangeCredentials"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Logout response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/BaseResponse"
+                }
+              }
+            }
+          }
+        },
+        "description": "Programmatically terminates the active session or revokes the current credentials.",
+        "security": [],
+        "x-codeSamples": [
+          {
+            "lang": "python",
+            "label": "Polymarket",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Polymarket(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Limitless",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Limitless(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Kalshi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Kalshi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "KalshiDemo",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.KalshiDemo(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Probable",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Probable(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Baozi",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Baozi(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Myriad",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Myriad(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Opinion",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Opinion(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Metaculus",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Metaculus(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Smarkets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Smarkets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "PolymarketUS",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.PolymarketUS(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Hyperliquid",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hyperliquid(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "GeminiTitan",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.GeminiTitan(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "SuiBets",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.SuiBets(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Rain",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Rain(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "python",
+            "label": "Hunch",
+            "source": "import pmxt\n\n# API key optional — enables faster catalog-backed lookups\nexchange = pmxt.Hunch(\n    pmxt_api_key=\"YOUR_PMXT_API_KEY\",\n)\nresult = exchange.logout()"
+          },
+          {
+            "lang": "javascript",
+            "label": "Polymarket",
+            "source": "import { Polymarket } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Polymarket({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Limitless",
+            "source": "import { Limitless } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Limitless({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Kalshi",
+            "source": "import { Kalshi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Kalshi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "KalshiDemo",
+            "source": "import { KalshiDemo } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new KalshiDemo({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Probable",
+            "source": "import { Probable } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Probable({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Baozi",
+            "source": "import { Baozi } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Baozi({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Myriad",
+            "source": "import { Myriad } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Myriad({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Opinion",
+            "source": "import { Opinion } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Opinion({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Metaculus",
+            "source": "import { Metaculus } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Metaculus({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Smarkets",
+            "source": "import { Smarkets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Smarkets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "PolymarketUS",
+            "source": "import { PolymarketUS } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new PolymarketUS({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hyperliquid",
+            "source": "import { Hyperliquid } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hyperliquid({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "GeminiTitan",
+            "source": "import { GeminiTitan } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new GeminiTitan({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "SuiBets",
+            "source": "import { SuiBets } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new SuiBets({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Rain",
+            "source": "import { Rain } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Rain({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          },
+          {
+            "lang": "javascript",
+            "label": "Hunch",
+            "source": "import { Hunch } from \"pmxtjs\";\n\n// API key optional — enables faster catalog-backed lookups\nconst exchange = new Hunch({\n  pmxtApiKey: \"YOUR_PMXT_API_KEY\",\n});\nconst result = await exchange.logout();"
+          }
+        ]
+      }
+    },
     "/api/{exchange}/fetchMarketsPaginated": {
       "get": {
         "summary": "Fetch Markets Paginated",
diff --git a/docs/docs.json b/docs/docs.json
index dbdb4b93..0951d03a 100644
--- a/docs/docs.json
+++ b/docs/docs.json
@@ -216,6 +216,9 @@
           {
             "group": "Other",
             "pages": [
+              "POST /api/{exchange}/getAuthNonce",
+              "POST /api/{exchange}/loginWithSignature",
+              "POST /api/{exchange}/logout",
               "GET /api/{exchange}/fetchSeries",
               "GET /api/{exchange}/fetchEventMetadata"
             ],
diff --git a/sdks/python/API_REFERENCE.md b/sdks/python/API_REFERENCE.md
index 44a18595..9479f362 100644
--- a/sdks/python/API_REFERENCE.md
+++ b/sdks/python/API_REFERENCE.md
@@ -187,6 +187,83 @@ ordering — exchanges may reorder or add markets between requests. For stable i
 across pages, use `loadMarkets()` and paginate over `Object.values(exchange.markets)`.
 Some exchanges (like Limitless) may only support status 'active' for search results.
 
+---
+### `get_auth_nonce`
+
+Retrieves a cryptographic challenge string (nonce) from a Web3 exchange.
+
+
+**Signature:**
+
+```python
+def get_auth_nonce(wallet_address: str) -> AuthNonceResponse:
+```
+
+**Parameters:**
+
+- `wallet_address` (str): walletAddress
+
+**Returns:** AuthNonceResponse - Result
+
+**Example:**
+
+```python
+exchange.get_auth_nonce(wallet_address="...")
+```
+
+
+---
+### `login_with_signature`
+
+Submits a completed wallet signature to exchange authentication endpoints 
+
+
+**Signature:**
+
+```python
+def login_with_signature(wallet_address: str, signature: str, nonce: str) -> SessionCredentials:
+```
+
+**Parameters:**
+
+- `wallet_address` (str): walletAddress
+- `signature` (str): signature
+- `nonce` (str): nonce
+
+**Returns:** SessionCredentials - Result
+
+**Example:**
+
+```python
+exchange.login_with_signature(wallet_address="...", signature="...", nonce="...")
+```
+
+
+---
+### `logout`
+
+Programmatically terminates the active session or revokes the current credentials.
+
+
+**Signature:**
+
+```python
+def logout() -> None:
+```
+
+**Parameters:**
+
+- None
+
+**Returns:** None - Result
+
+**Example:**
+
+```python
+exchange.logout()
+```
+
+
 ---
 ### `fetch_markets_paginated`
 
diff --git a/sdks/python/pmxt/_exchanges.py b/sdks/python/pmxt/_exchanges.py
index 224672b5..2c119cab 100644
--- a/sdks/python/pmxt/_exchanges.py
+++ b/sdks/python/pmxt/_exchanges.py
@@ -21,10 +21,6 @@ def __init__(
         base_url: Optional[str] = None,
         auto_start_server: Optional[bool] = None,
         pmxt_api_key: Optional[str] = None,
-        # NOTE: Generated wrapper; update the generator template in
-        # core/scripts/generate-python-exchanges.js in a follow-up.
-        wallet_address: Optional[str] = None,
-        signer: Optional[object] = None,
     ) -> None:
         """
         Initialize Polymarket client.
@@ -39,8 +35,6 @@ def __init__(
             base_url: Base URL of the PMXT sidecar server
             auto_start_server: Automatically start server if not running (default: True)
             pmxt_api_key: Hosted PMXT API key (optional; enables hosted mode)
-            wallet_address: Ethereum address for hosted reads/writes (optional)
-            signer: Optional callable for signing typed_data (optional)
         """
         super().__init__(
             exchange_name="polymarket",
@@ -51,8 +45,6 @@ def __init__(
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
-            wallet_address=wallet_address,
-            signer=signer,
         )
 
         self.api_secret = api_secret
@@ -84,8 +76,6 @@ def __init__(
         base_url: Optional[str] = None,
         auto_start_server: Optional[bool] = None,
         pmxt_api_key: Optional[str] = None,
-        wallet_address: Optional[str] = None,
-        signer: Optional[object] = None,
     ) -> None:
         """
         Initialize Limitless client.
@@ -98,8 +88,6 @@ def __init__(
             base_url: Base URL of the PMXT sidecar server
             auto_start_server: Automatically start server if not running (default: True)
             pmxt_api_key: Hosted PMXT API key (optional; enables hosted mode)
-            wallet_address: Ethereum address for hosted reads/writes (optional)
-            signer: Optional callable for signing typed_data (optional)
         """
         super().__init__(
             exchange_name="limitless",
@@ -108,8 +96,6 @@ def __init__(
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
-            wallet_address=wallet_address,
-            signer=signer,
         )
 
         self.api_secret = api_secret
@@ -284,7 +270,7 @@ def __init__(
         super().__init__(
             exchange_name="myriad",
             api_key=api_key,
-            wallet_address=wallet_address,
+            private_key=wallet_address,
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
@@ -302,10 +288,6 @@ def __init__(
         base_url: Optional[str] = None,
         auto_start_server: Optional[bool] = None,
         pmxt_api_key: Optional[str] = None,
-        # NOTE: Generated wrapper; update the generator template in
-        # core/scripts/generate-python-exchanges.js in a follow-up.
-        wallet_address: Optional[str] = None,
-        signer: Optional[object] = None,
     ) -> None:
         """
         Initialize Opinion client.
@@ -317,8 +299,6 @@ def __init__(
             base_url: Base URL of the PMXT sidecar server
             auto_start_server: Automatically start server if not running (default: True)
             pmxt_api_key: Hosted PMXT API key (optional; enables hosted mode)
-            wallet_address: Ethereum address for hosted reads/writes (optional)
-            signer: Optional callable for signing typed_data (optional)
         """
         super().__init__(
             exchange_name="opinion",
@@ -328,8 +308,6 @@ def __init__(
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
-            wallet_address=wallet_address,
-            signer=signer,
         )
 
 
@@ -522,6 +500,7 @@ class Rain(Exchange):
 
     def __init__(
         self,
+        private_key: Optional[str] = None,
         base_url: Optional[str] = None,
         auto_start_server: Optional[bool] = None,
         pmxt_api_key: Optional[str] = None,
@@ -530,12 +509,14 @@ def __init__(
         Initialize Rain client.
 
         Args:
+            private_key: Private key for authentication (optional)
             base_url: Base URL of the PMXT sidecar server
             auto_start_server: Automatically start server if not running (default: True)
             pmxt_api_key: Hosted PMXT API key (optional; enables hosted mode)
         """
         super().__init__(
             exchange_name="rain",
+            private_key=private_key,
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
@@ -551,7 +532,6 @@ def __init__(
         base_url: Optional[str] = None,
         auto_start_server: Optional[bool] = None,
         pmxt_api_key: Optional[str] = None,
-        wallet_address: Optional[str] = None,
     ) -> None:
         """
         Initialize Hunch client.
@@ -561,7 +541,6 @@ def __init__(
             base_url: Base URL of the PMXT sidecar server
             auto_start_server: Automatically start server if not running (default: True)
             pmxt_api_key: Hosted PMXT API key (optional; enables hosted mode)
-            wallet_address: EVM wallet address used for hosted reads/writes
         """
         super().__init__(
             exchange_name="hunch",
@@ -569,7 +548,6 @@ def __init__(
             base_url=base_url,
             auto_start_server=auto_start_server,
             pmxt_api_key=pmxt_api_key,
-            wallet_address=wallet_address,
         )
 
 
diff --git a/sdks/typescript/API_REFERENCE.md b/sdks/typescript/API_REFERENCE.md
index 79ec1a85..ff87039c 100644
--- a/sdks/typescript/API_REFERENCE.md
+++ b/sdks/typescript/API_REFERENCE.md
@@ -189,6 +189,83 @@ ordering — exchanges may reorder or add markets between requests. For stable i
 across pages, use `loadMarkets()` and paginate over `Object.values(exchange.markets)`.
 Some exchanges (like Limitless) may only support status 'active' for search results.
 
+---
+### `getAuthNonce`
+
+Retrieves a cryptographic challenge string (nonce) from a Web3 exchange.
+
+
+**Signature:**
+
+```typescript
+async getAuthNonce(walletAddress: string): Promise<AuthNonceResponse>
+```
+
+**Parameters:**
+
+- `walletAddress` (string): walletAddress
+
+**Returns:** Promise<AuthNonceResponse> - Result
+
+**Example:**
+
+```typescript
+await exchange.getAuthNonce("...")
+```
+
+
+---
+### `loginWithSignature`
+
+Submits a completed wallet signature to exchange authentication endpoints 
+
+
+**Signature:**
+
+```typescript
+async loginWithSignature(walletAddress: string, signature: string, nonce: string): Promise<SessionCredentials>
+```
+
+**Parameters:**
+
+- `walletAddress` (string): walletAddress
+- `signature` (string): signature
+- `nonce` (string): nonce
+
+**Returns:** Promise<SessionCredentials> - Result
+
+**Example:**
+
+```typescript
+await exchange.loginWithSignature("...", "...", "...")
+```
+
+
+---
+### `logout`
+
+Programmatically terminates the active session or revokes the current credentials.
+
+
+**Signature:**
+
+```typescript
+async logout(): Promise<void>
+```
+
+**Parameters:**
+
+- None
+
+**Returns:** Promise<void> - Result
+
+**Example:**
+
+```typescript
+await exchange.logout()
+```
+
+
 ---
 ### `fetchMarketsPaginated`
 
diff --git a/sdks/typescript/pmxt/client.ts b/sdks/typescript/pmxt/client.ts
index 41eadab9..3bf5a90e 100644
--- a/sdks/typescript/pmxt/client.ts
+++ b/sdks/typescript/pmxt/client.ts
@@ -1000,6 +1000,82 @@ export abstract class Exchange {
         }
     }
 
+    async getAuthNonce(walletAddress: string): Promise<AuthNonceResponse> {
+        await this.initPromise;
+        try {
+            const args: any[] = [];
+            args.push(walletAddress);
+            const response = await this.fetchWithRetry(`${this.resolveBaseUrl()}/api/${this.exchangeName}/getAuthNonce`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json', ...this.getAuthHeaders() },
+                body: JSON.stringify({ args, credentials: this.getCredentials() }),
+            });
+            if (!response.ok) {
+                const body = await response.json().catch(() => ({}));
+                if (body.error && typeof body.error === "object") {
+                    throw fromServerError(body.error);
+                }
+                throw new PmxtError(body.error?.message || response.statusText);
+            }
+            const json = await response.json();
+            return this.handleResponse(json);
+        } catch (error) {
+            if (error instanceof PmxtError) throw error;
+            throw new PmxtError(`Failed to getAuthNonce: ${error}`);
+        }
+    }
+
+    async loginWithSignature(walletAddress: string, signature: string, nonce: string): Promise<SessionCredentials> {
+        await this.initPromise;
+        try {
+            const args: any[] = [];
+            args.push(walletAddress);
+            args.push(signature);
+            args.push(nonce);
+            const response = await this.fetchWithRetry(`${this.resolveBaseUrl()}/api/${this.exchangeName}/loginWithSignature`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json', ...this.getAuthHeaders() },
+                body: JSON.stringify({ args, credentials: this.getCredentials() }),
+            });
+            if (!response.ok) {
+                const body = await response.json().catch(() => ({}));
+                if (body.error && typeof body.error === "object") {
+                    throw fromServerError(body.error);
+                }
+                throw new PmxtError(body.error?.message || response.statusText);
+            }
+            const json = await response.json();
+            return this.handleResponse(json);
+        } catch (error) {
+            if (error instanceof PmxtError) throw error;
+            throw new PmxtError(`Failed to loginWithSignature: ${error}`);
+        }
+    }
+
+    async logout(): Promise<void> {
+        await this.initPromise;
+        try {
+            const args: any[] = [];
+            const response = await this.fetchWithRetry(`${this.resolveBaseUrl()}/api/${this.exchangeName}/logout`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json', ...this.getAuthHeaders() },
+                body: JSON.stringify({ args, credentials: this.getCredentials() }),
+            });
+            if (!response.ok) {
+                const body = await response.json().catch(() => ({}));
+                if (body.error && typeof body.error === "object") {
+                    throw fromServerError(body.error);
+                }
+                throw new PmxtError(body.error?.message || response.statusText);
+            }
+            const json = await response.json();
+            this.handleResponse(json);
+        } catch (error) {
+            if (error instanceof PmxtError) throw error;
+            throw new PmxtError(`Failed to logout: ${error}`);
+        }
+    }
+
     async fetchMarketsPaginated(params?: any): Promise<PaginatedMarketsResult> {
         await this.initPromise;
         try {
diff --git a/sdks/typescript/pmxt/models.ts b/sdks/typescript/pmxt/models.ts
index fc5ca349..a645a9ad 100644
--- a/sdks/typescript/pmxt/models.ts
+++ b/sdks/typescript/pmxt/models.ts
@@ -208,6 +208,8 @@ export interface ExecutionPriceResult {
     fullyFilled: boolean;
 }
 
+
+
 /**
  * A trade made by the authenticated user.
  */
diff --git a/sdks/typescript/scripts/generate-client-methods.js b/sdks/typescript/scripts/generate-client-methods.js
index 7eed6d61..be6782dd 100644
--- a/sdks/typescript/scripts/generate-client-methods.js
+++ b/sdks/typescript/scripts/generate-client-methods.js
@@ -88,6 +88,9 @@ const TYPE_MAP = {
     // Pagination wrapper — gets its own response handler
     PaginatedMarketsResult: { converter: null, pattern: 'paginatedMarkets' },
     PaginatedEventsResult: { converter: null, pattern: 'paginatedEvents' },
+
+     AuthNonceResponse: { converter: null, pattern: 'single' },
+    SessionCredentials: { converter: null, pattern: 'single' },
 };
 
 // SDK types that can appear in generated signatures without extra imports
@@ -101,6 +104,9 @@ const SDK_PARAM_TYPES = new Set([
     'MyTradesParams', 'OrderHistoryParams', 'CreateOrderParams',
     'MarketFilterCriteria', 'EventFilterCriteria',
     'SubscriptionOption',
+
+    'AuthNonceResponse',
+    'SessionCredentials',
 ]);
 
 // Parameter names that represent outcome IDs and should accept MarketOutcome.