diff --git a/.changeset/sdk-cancel-turn.md b/.changeset/sdk-cancel-turn.md
deleted file mode 100644
index 32980267..00000000
--- a/.changeset/sdk-cancel-turn.md
+++ /dev/null
@@ -1,12 +0,0 @@
----
-'@smooai/smooth-operator': minor
----
-
-Add client-initiated turn cancellation (the "Stop button") to the TypeScript client SDK.
-
-- `SmoothAgentClient.cancel({ requestId, sessionId? })` sends a `cancel` frame for an in-flight `send_message` turn.
-- `MessageTurn.cancel()` is the ergonomic "stop THIS turn" convenience — it cancels using the turn's own `requestId` + `sessionId`.
-- The terminal `cancelled` event now settles the matching `MessageTurn` as a **user-stop**: the turn *resolves* (never rejects), `await turn` yields the `Cancelled` event, the async iterator ends cleanly, and `turn.cancelled` is `true` so the UI can tell a user-stop apart from an error.
-- `CancelRequest` / `Cancelled` are now first-class members of the `ClientAction` / `ServerEvent` unions (and the validator's schema maps).
-
-Idempotent: cancelling with no active turn — or receiving a `cancelled` with no matching in-flight turn — is a harmless no-op.
diff --git a/dotnet/server/aspnetcore/SmooAI.SmoothOperator.Server.AspNetCore.csproj b/dotnet/server/aspnetcore/SmooAI.SmoothOperator.Server.AspNetCore.csproj
index 259392e6..ac78c8a5 100644
--- a/dotnet/server/aspnetcore/SmooAI.SmoothOperator.Server.AspNetCore.csproj
+++ b/dotnet/server/aspnetcore/SmooAI.SmoothOperator.Server.AspNetCore.csproj
@@ -15,7 +15,7 @@
attribute. (Keep the element-form version out of comments: the sync regex
replaces the first element-form match in the file.) -->
SmooAI.SmoothOperator.Server.AspNetCore
- 1.50.3
+ 1.51.0
SmooAI
ai;agent;llm;chat;smooth-operator;server;aspnetcore;websocket;smooai
MIT
diff --git a/dotnet/server/postgres/src/SmooAI.SmoothOperator.Server.Postgres.csproj b/dotnet/server/postgres/src/SmooAI.SmoothOperator.Server.Postgres.csproj
index b538d25e..c3d73313 100644
--- a/dotnet/server/postgres/src/SmooAI.SmoothOperator.Server.Postgres.csproj
+++ b/dotnet/server/postgres/src/SmooAI.SmoothOperator.Server.Postgres.csproj
@@ -15,7 +15,7 @@
attribute. (Keep the element-form version out of comments: the sync regex
replaces the first element-form match in the file.) -->
SmooAI.SmoothOperator.Server.Postgres
- 1.50.3
+ 1.51.0
SmooAI
ai;agent;llm;chat;smooth-operator;server;postgres;pgvector;smooai
MIT
diff --git a/dotnet/server/src/SmooAI.SmoothOperator.Server.csproj b/dotnet/server/src/SmooAI.SmoothOperator.Server.csproj
index ad3ee7b6..e6544406 100644
--- a/dotnet/server/src/SmooAI.SmoothOperator.Server.csproj
+++ b/dotnet/server/src/SmooAI.SmoothOperator.Server.csproj
@@ -14,7 +14,7 @@
scripts/sync-versions.mjs (do NOT confuse with the SmooAI.SmoothOperator.Core
PackageReference version below, which tracks the separately-published engine). -->
SmooAI.SmoothOperator.Server
- 1.50.3
+ 1.51.0
SmooAI
ai;agent;llm;chat;smooth-operator;server;websocket;smooai
MIT
diff --git a/examples/web-chat/CHANGELOG.md b/examples/web-chat/CHANGELOG.md
index 8364bb25..ae29b1c2 100644
--- a/examples/web-chat/CHANGELOG.md
+++ b/examples/web-chat/CHANGELOG.md
@@ -1,5 +1,12 @@
# @smooai/smooth-operator-web-chat-example
+## 0.0.86
+
+### Patch Changes
+
+- Updated dependencies [090af14]
+ - @smooai/smooth-operator@1.51.0
+
## 0.0.85
### Patch Changes
diff --git a/examples/web-chat/package.json b/examples/web-chat/package.json
index 49005fc5..da7bdbab 100644
--- a/examples/web-chat/package.json
+++ b/examples/web-chat/package.json
@@ -1,6 +1,6 @@
{
"name": "@smooai/smooth-operator-web-chat-example",
- "version": "0.0.85",
+ "version": "0.0.86",
"private": true,
"description": "A smooth-web-like Vite + React chat client that drives a running smooth-operator server over its WebSocket protocol — token streaming, inline tool-call/result blocks, a conversation sidebar, and oldest-first history, all on top of the published @smooai/smooth-operator SDK.",
"type": "module",
diff --git a/go/version.go b/go/version.go
index 2730a689..a4eef141 100644
--- a/go/version.go
+++ b/go/version.go
@@ -5,4 +5,4 @@ package e2e
// language artifacts. The real Go "publish" is a git tag (go/v); this
// constant is the anchor that scripts/sync-versions.mjs keeps in sync with the
// canonical npm version on every changeset release.
-const Version = "1.50.3"
+const Version = "1.51.0"
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 524a5498..80203a7a 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
[project]
name = "smooai-smooth-operator"
-version = "1.50.3"
+version = "1.51.0"
description = "Python protocol types and native async WebSocket client for the smooth-operator protocol. Generated from the language-neutral JSON Schemas in spec/."
readme = "README.md"
license = { text = "MIT" }
diff --git a/python/server/pyproject.toml b/python/server/pyproject.toml
index 688c5b92..a4b06384 100644
--- a/python/server/pyproject.toml
+++ b/python/server/pyproject.toml
@@ -1,6 +1,6 @@
[project]
name = "smooai-smooth-operator-server"
-version = "1.50.3"
+version = "1.51.0"
description = "Native async WebSocket server for the smooth-operator protocol — parity with the Rust and C# reference servers, consuming the in-process smooai-smooth-operator-core engine."
readme = "README.md"
license = { text = "MIT" }
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 3a319eb4..1195afa0 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -4099,7 +4099,7 @@ checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
[[package]]
name = "smooai-smooth-operator"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4133,7 +4133,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-adapter-backplane-nats"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-nats",
@@ -4149,7 +4149,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-adapter-backplane-redis"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4165,7 +4165,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-adapter-dynamodb"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4186,7 +4186,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-adapter-memory"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4199,7 +4199,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-adapter-postgres"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4290,7 +4290,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-ingestion"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
@@ -4337,7 +4337,7 @@ dependencies = [
[[package]]
name = "smooai-smooth-operator-server"
-version = "1.50.3"
+version = "1.51.0"
dependencies = [
"anyhow",
"async-trait",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 52f2f761..5c47c3e2 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -40,7 +40,7 @@ smooai-smooth-operator-core = "1.8.0"
# Intra-workspace dep on the reference lib carries its version so the adapters /
# ingestion / server that depend on it are publishable (path = local dev,
# version = the crates.io requirement).
-smooth-operator = { package = "smooai-smooth-operator", path = "smooth-operator", version = "1.50.3" }
+smooth-operator = { package = "smooai-smooth-operator", path = "smooth-operator", version = "1.51.0" }
async-trait = "0.1"
anyhow = "1"
diff --git a/rust/adapters/backplane-nats/Cargo.toml b/rust/adapters/backplane-nats/Cargo.toml
index dbd812ed..d31be46f 100644
--- a/rust/adapters/backplane-nats/Cargo.toml
+++ b/rust/adapters/backplane-nats/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-adapter-backplane-nats"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
diff --git a/rust/adapters/backplane-redis/Cargo.toml b/rust/adapters/backplane-redis/Cargo.toml
index ba0e68b9..beba4068 100644
--- a/rust/adapters/backplane-redis/Cargo.toml
+++ b/rust/adapters/backplane-redis/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-adapter-backplane-redis"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
diff --git a/rust/adapters/dynamodb/Cargo.toml b/rust/adapters/dynamodb/Cargo.toml
index 79f0c22c..dd791ece 100644
--- a/rust/adapters/dynamodb/Cargo.toml
+++ b/rust/adapters/dynamodb/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-adapter-dynamodb"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
@@ -19,7 +19,7 @@ s3-vectors = ["dep:aws-sdk-s3vectors", "dep:aws-smithy-types"]
smooth-operator = { workspace = true }
smooai-smooth-operator-core = { workspace = true }
# IndexingStore / IndexingRun for the persistent admin indexing-runs store.
-smooai-smooth-operator-ingestion = { path = "../../ingestion", version = "1.50.3" }
+smooai-smooth-operator-ingestion = { path = "../../ingestion", version = "1.51.0" }
async-trait = { workspace = true }
anyhow = { workspace = true }
chrono = { workspace = true }
diff --git a/rust/adapters/in-memory/Cargo.toml b/rust/adapters/in-memory/Cargo.toml
index 90aabaf9..bb641c21 100644
--- a/rust/adapters/in-memory/Cargo.toml
+++ b/rust/adapters/in-memory/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-adapter-memory"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
diff --git a/rust/adapters/postgres/Cargo.toml b/rust/adapters/postgres/Cargo.toml
index c17c4f3d..ea8ad357 100644
--- a/rust/adapters/postgres/Cargo.toml
+++ b/rust/adapters/postgres/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-adapter-postgres"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
@@ -15,7 +15,7 @@ smooth-operator = { workspace = true }
# `postgres` feature pulls in PostgresCheckpointStore (sync r2d2 path).
smooai-smooth-operator-core = { workspace = true, features = ["postgres"] }
# IndexingStore / IndexingRun for the persistent admin indexing-runs store.
-smooai-smooth-operator-ingestion = { path = "../../ingestion", version = "1.50.3" }
+smooai-smooth-operator-ingestion = { path = "../../ingestion", version = "1.51.0" }
async-trait = { workspace = true }
anyhow = { workspace = true }
chrono = { workspace = true }
diff --git a/rust/ingestion/Cargo.toml b/rust/ingestion/Cargo.toml
index 1a34a749..32dcd97f 100644
--- a/rust/ingestion/Cargo.toml
+++ b/rust/ingestion/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-ingestion"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
diff --git a/rust/smooth-operator-server/Cargo.toml b/rust/smooth-operator-server/Cargo.toml
index a4252d90..15c3a5d0 100644
--- a/rust/smooth-operator-server/Cargo.toml
+++ b/rust/smooth-operator-server/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator-server"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
@@ -35,22 +35,22 @@ smooth-operator = { workspace = true }
smooai-smooth-operator-core = { workspace = true }
# In-memory storage + backplane — ALWAYS included. The local-flavor default and
# the lean (`--no-default-features`) build run entirely on these.
-smooai-smooth-operator-adapter-memory = { path = "../adapters/in-memory", version = "1.50.3" }
+smooai-smooth-operator-adapter-memory = { path = "../adapters/in-memory", version = "1.51.0" }
# Persistent storage + admin-store backends, selected at runtime to match the
# configured storage backend (Postgres / DynamoDB; default in-memory). Optional:
# gated behind the `postgres` / `dynamodb` features so a lean local/embed build
# can exclude tokio-postgres / the AWS SDK. The `postgres` crate also provides the
# gateway-backed embedder/reranker, so the `postgres` feature additionally enables
# the semantic-retrieval path in `embedder.rs` / `reranker.rs`.
-smooai-smooth-operator-adapter-postgres = { path = "../adapters/postgres", version = "1.50.3", optional = true }
-smooai-smooth-operator-adapter-dynamodb = { path = "../adapters/dynamodb", version = "1.50.3", optional = true }
+smooai-smooth-operator-adapter-postgres = { path = "../adapters/postgres", version = "1.51.0", optional = true }
+smooai-smooth-operator-adapter-dynamodb = { path = "../adapters/dynamodb", version = "1.51.0", optional = true }
# Distributed Backplane backends for horizontal scale-out, selected at runtime
# via SMOOTH_AGENT_BACKPLANE (default in-memory / single-process). Optional: gated
# behind the `redis` / `nats` features so a lean build excludes their drivers.
-smooai-smooth-operator-adapter-backplane-redis = { path = "../adapters/backplane-redis", version = "1.50.3", optional = true }
-smooai-smooth-operator-adapter-backplane-nats = { path = "../adapters/backplane-nats", version = "1.50.3", optional = true }
+smooai-smooth-operator-adapter-backplane-redis = { path = "../adapters/backplane-redis", version = "1.51.0", optional = true }
+smooai-smooth-operator-adapter-backplane-nats = { path = "../adapters/backplane-nats", version = "1.51.0", optional = true }
# Admin API surfaces indexing-run status via the ingestion crate's IndexingStore.
-smooai-smooth-operator-ingestion = { path = "../ingestion", version = "1.50.3" }
+smooai-smooth-operator-ingestion = { path = "../ingestion", version = "1.51.0" }
async-trait = { workspace = true }
anyhow = { workspace = true }
diff --git a/rust/smooth-operator/Cargo.toml b/rust/smooth-operator/Cargo.toml
index dd6696dc..24f2c6c8 100644
--- a/rust/smooth-operator/Cargo.toml
+++ b/rust/smooth-operator/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "smooai-smooth-operator"
-version = "1.50.3"
+version = "1.51.0"
edition.workspace = true
license.workspace = true
repository.workspace = true
diff --git a/typescript/CHANGELOG.md b/typescript/CHANGELOG.md
index 75b109d8..c190d2e3 100644
--- a/typescript/CHANGELOG.md
+++ b/typescript/CHANGELOG.md
@@ -1,5 +1,18 @@
# @smooai/smooth-operator
+## 1.51.0
+
+### Minor Changes
+
+- 090af14: Add client-initiated turn cancellation (the "Stop button") to the TypeScript client SDK.
+
+ - `SmoothAgentClient.cancel({ requestId, sessionId? })` sends a `cancel` frame for an in-flight `send_message` turn.
+ - `MessageTurn.cancel()` is the ergonomic "stop THIS turn" convenience — it cancels using the turn's own `requestId` + `sessionId`.
+ - The terminal `cancelled` event now settles the matching `MessageTurn` as a **user-stop**: the turn _resolves_ (never rejects), `await turn` yields the `Cancelled` event, the async iterator ends cleanly, and `turn.cancelled` is `true` so the UI can tell a user-stop apart from an error.
+ - `CancelRequest` / `Cancelled` are now first-class members of the `ClientAction` / `ServerEvent` unions (and the validator's schema maps).
+
+ Idempotent: cancelling with no active turn — or receiving a `cancelled` with no matching in-flight turn — is a harmless no-op.
+
## 1.50.3
### Patch Changes
diff --git a/typescript/package.json b/typescript/package.json
index acb1010f..c863d365 100644
--- a/typescript/package.json
+++ b/typescript/package.json
@@ -1,6 +1,6 @@
{
"name": "@smooai/smooth-operator",
- "version": "1.50.3",
+ "version": "1.51.0",
"description": "TypeScript SDK for the smooth-operator WebSocket protocol: the native client (`.`), React bindings (`./react`), and the embeddable web-component chat widget (`./widget`). Generated from the language-neutral JSON Schemas in spec/.",
"license": "MIT",
"type": "module",