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docs(rest/python): align discovery response example
FanouZeng-TT Aug 25, 2026
98ec283
docs(rest/python): add use and alg to signing key example
FanouZeng-TT Sep 2, 2026
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239 changes: 140 additions & 99 deletions rest/python/server/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -193,112 +193,153 @@ Response:
"ucp": {
"version": "2026-04-08",
"services": {
"dev.ucp.shopping": {
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/shopping",
"rest": {
"schema": "https://ucp.dev/2026-04-08/services/shopping/openapi.json",
"endpoint": "http://localhost:8182/"
},
"mcp": null,
"a2a": null,
"embedded": null
}
"dev.ucp.shopping": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/overview",
"transport": "rest",
"endpoint": "http://localhost:8182",
"schema": "https://ucp.dev/2026-04-08/services/shopping/openapi.json"
}
]
},
"capabilities": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/shopping/checkout",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/checkout.json",
"extends": null,
"config": null
},
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/shopping/discount",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/discount.json",
"extends": "dev.ucp.shopping.checkout",
"config": null
},
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/shopping/fulfillment",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/fulfillment.json",
"extends": "dev.ucp.shopping.checkout",
"config": null
}
]
},
"payment": {
"handlers": [
{
"id": "shop_pay",
"name": "com.shopify.shop_pay",
"version": "2026-04-08",
"spec": "https://shopify.dev/ucp/handlers/shop_pay",
"config_schema": "https://shopify.dev/ucp/handlers/shop_pay/config.json",
"instrument_schemas": [
"https://shopify.dev/ucp/handlers/shop_pay/instrument.json"
],
"config": {
"shop_id": "a1c4c1fc-6416-4103-afb3-65046e1c7787"
"capabilities": {
"dev.ucp.shopping.checkout": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/checkout",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/checkout.json"
}
},
{
"id": "google_pay",
"name": "google.pay",
"version": "2026-04-08",
"spec": "https://example.com/spec",
"config_schema": "https://example.com/schema",
"instrument_schemas": [
"https://ucp.dev/2026-04-08/schemas/shopping/types/gpay_card_payment_instrument.json"
],
"config": {
"api_version": 2,
"api_version_minor": 0,
"merchant_info": {
"merchant_name": "Flower Shop",
"merchant_id": "TEST",
"merchant_origin": "localhost"
},
"allowed_payment_methods": [
{
"type": "CARD",
"parameters": {
"allowedAuthMethods": ["PAN_ONLY", "CRYPTOGRAM_3DS"],
"allowedCardNetworks": ["VISA", "MASTERCARD"]
},
"tokenization_specification": [
{
"type": "PAYMENT_GATEWAY",
"parameters": [
{
"gateway": "example",
"gatewayMerchantId": "exampleGatewayMerchantId"
}
]
}
]
}
]
],
"dev.ucp.shopping.cart": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/cart",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/cart.json"
}
},
{
"id": "mock_payment_handler",
"name": "dev.ucp.mock_payment",
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/mock",
"config_schema": "https://ucp.dev/2026-04-08/schemas/mock.json",
"instrument_schemas": [
"https://ucp.dev/2026-04-08/schemas/shopping/types/card_payment_instrument.json"
],
"config": {
"supported_tokens": ["success_token", "fail_token"]
],
"dev.ucp.shopping.order": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/order",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/order.json"
}
],
"dev.ucp.shopping.discount": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/discount",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/discount.json",
"extends": ["dev.ucp.shopping.checkout", "dev.ucp.shopping.cart"]
}
],
"dev.ucp.shopping.fulfillment": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/fulfillment",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/fulfillment.json",
"extends": "dev.ucp.shopping.checkout"
}
],
"dev.ucp.shopping.buyer_consent": [
{
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/specification/buyer-consent",
"schema": "https://ucp.dev/2026-04-08/schemas/shopping/buyer_consent.json",
"extends": "dev.ucp.shopping.checkout"
}
]
},
"payment_handlers": {
"dev.shopify.shop_pay": [
{
"id": "shop_pay",
"name": "com.shopify.shop_pay",
"version": "2026-04-08",
"spec": "https://shopify.dev/docs/agents/checkout/shop-pay-handler",
"config_schema": "https://shopify.dev/ucp/shop-pay-handler/2026-04-08/config.json",
"instrument_schemas": [
"https://shopify.dev/ucp/shop-pay-handler/2026-04-08/instrument.json"
],
"config": {
"shop_id": "<runtime-generated>"
}
}
],
"com.google.pay": [
{
"id": "google_pay",
"name": "com.google.pay",
"version": "2026-04-08",
"spec": "https://pay.google.com/gp/p/ucp/2026-04-08/",
"config_schema": "https://pay.google.com/gp/p/ucp/2026-04-08/schemas/config.json",
"instrument_schemas": [
"https://pay.google.com/gp/p/ucp/2026-04-08/schemas/card_payment_instrument.json"
],
"config": {
"api_version": 2,
"api_version_minor": 0,
"merchant_info": {
"merchant_name": "Flower Shop",
"merchant_id": "TEST",
"merchant_origin": "localhost"
},
"allowed_payment_methods": [
{
"type": "CARD",
"parameters": {
"allowedAuthMethods": ["PAN_ONLY", "CRYPTOGRAM_3DS"],
"allowedCardNetworks": ["VISA", "MASTERCARD"]
},
"tokenization_specification": [
{
"type": "PAYMENT_GATEWAY",
"parameters": [
{
"gateway": "example",
"gatewayMerchantId": "exampleGatewayMerchantId"
}
]
}
]
}
]
}
}
],
"dev.mock.payment_handler": [
{
"id": "mock_payment_handler",
"name": "mock_payment_handler",
"version": "2026-04-08",
"spec": "https://ucp.dev/2026-04-08/schemas/mock_payment_handler/spec",
"config": {}
}
]
},
"keys": [
{
"kty": "EC",
"crv": "P-256",
"kid": "<runtime-generated>",
"x": "<runtime-generated>",
"y": "<runtime-generated>",
"use": "sig",
"alg": "ES256"
}
]
},
"keys": null
"signing_keys": [
{
"kty": "EC",
"crv": "P-256",
"kid": "<runtime-generated>",
"x": "<runtime-generated>",
"y": "<runtime-generated>",
"use": "sig",
"alg": "ES256"
}
]
}
```

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