TanStack · AlemTuzlak · Jan 30, 2026 · Jan 29, 2026 · Jan 29, 2026 · Jan 30, 2026
diff --git a/.changeset/ag-ui-events.md b/.changeset/ag-ui-events.md
diff --git a/examples/ts-svelte-chat/CHANGELOG.md b/examples/ts-svelte-chat/CHANGELOG.md
@@ -1,5 +1,18 @@
 # ts-svelte-chat
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+  - @tanstack/ai-client@0.3.0
+  - @tanstack/ai-openai@0.3.0
+  - @tanstack/ai-anthropic@0.3.0
+  - @tanstack/ai-gemini@0.3.0
+  - @tanstack/ai-ollama@0.3.0
+  - @tanstack/ai-svelte@0.3.0
+
 ## 0.1.4
 
 ### Patch Changes
@@ -48,13 +61,13 @@
 ### Patch Changes
 
 - Updated dependencies [[`c5df33c`](https://github.com/TanStack/ai/commit/c5df33c2d3e72c3332048ffe7c64a553e5ea86fb)]:
-  - @tanstack/ai-anthropic@1.0.0
+  - @tanstack/ai-anthropic@0.3.0
   - @tanstack/ai-client@0.2.0
-  - @tanstack/ai-ollama@1.0.0
-  - @tanstack/ai-svelte@1.0.0
+  - @tanstack/ai-ollama@0.3.0
+  - @tanstack/ai-svelte@0.3.0
   - @tanstack/ai@0.2.0
-  - @tanstack/ai-gemini@1.0.0
-  - @tanstack/ai-openai@1.0.0
+  - @tanstack/ai-gemini@0.3.0
+  - @tanstack/ai-openai@0.3.0
 
 ## 0.0.4
 

diff --git a/examples/ts-svelte-chat/package.json b/examples/ts-svelte-chat/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ts-svelte-chat",
   "private": true,
-  "version": "0.1.4",
+  "version": "0.1.5",
   "type": "module",
   "scripts": {
     "dev": "vite dev --port 3000",

diff --git a/examples/ts-vue-chat/CHANGELOG.md b/examples/ts-vue-chat/CHANGELOG.md
@@ -1,5 +1,19 @@
 # ts-vue-chat
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+  - @tanstack/ai-client@0.3.0
+  - @tanstack/ai-openai@0.3.0
+  - @tanstack/ai-anthropic@0.3.0
+  - @tanstack/ai-gemini@0.3.0
+  - @tanstack/ai-ollama@0.3.0
+  - @tanstack/ai-vue@0.3.0
+  - @tanstack/ai-vue-ui@0.1.4
+
 ## 0.1.4
 
 ### Patch Changes
@@ -50,14 +64,14 @@
 ### Patch Changes
 
 - Updated dependencies [[`c5df33c`](https://github.com/TanStack/ai/commit/c5df33c2d3e72c3332048ffe7c64a553e5ea86fb)]:
-  - @tanstack/ai-anthropic@1.0.0
+  - @tanstack/ai-anthropic@0.3.0
   - @tanstack/ai-client@0.2.0
-  - @tanstack/ai-ollama@1.0.0
-  - @tanstack/ai-vue@1.0.0
+  - @tanstack/ai-ollama@0.3.0
+  - @tanstack/ai-vue@0.3.0
   - @tanstack/ai@0.2.0
   - @tanstack/ai-vue-ui@0.1.1
-  - @tanstack/ai-gemini@1.0.0
-  - @tanstack/ai-openai@1.0.0
+  - @tanstack/ai-gemini@0.3.0
+  - @tanstack/ai-openai@0.3.0
 
 ## 0.0.3
 

diff --git a/examples/ts-vue-chat/package.json b/examples/ts-vue-chat/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ts-vue-chat",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "private": true,
   "type": "module",
   "scripts": {

diff --git a/examples/vanilla-chat/CHANGELOG.md b/examples/vanilla-chat/CHANGELOG.md
@@ -1,5 +1,12 @@
 # vanilla-chat
 
+## 0.0.8
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai-client@0.3.0
+
 ## 0.0.7
 
 ### Patch Changes

diff --git a/examples/vanilla-chat/package.json b/examples/vanilla-chat/package.json
@@ -2,7 +2,7 @@
   "name": "vanilla-chat",
   "private": true,
   "type": "module",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "scripts": {
     "start": "vite --port 3001",
     "dev": "vite --port 3001",

diff --git a/packages/typescript/ai-anthropic/CHANGELOG.md b/packages/typescript/ai-anthropic/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @tanstack/ai-anthropic
 
+## 0.3.0
+
+### Minor Changes
+
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.2.0
 
 ### Minor Changes

diff --git a/packages/typescript/ai-anthropic/package.json b/packages/typescript/ai-anthropic/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-anthropic",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Anthropic Claude adapter for TanStack AI",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-client/CHANGELOG.md b/packages/typescript/ai-client/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @tanstack/ai-client
 
+## 0.3.0
+
+### Minor Changes
+
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.2.2
 
 ### Patch Changes

diff --git a/packages/typescript/ai-client/package.json b/packages/typescript/ai-client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-client",
-  "version": "0.2.2",
+  "version": "0.3.0",
   "description": "Framework-agnostic headless client for TanStack AI",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-devtools/CHANGELOG.md b/packages/typescript/ai-devtools/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @tanstack/ai-devtools-core
 
+## 0.2.2
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.2.1
 
 ### Patch Changes

diff --git a/packages/typescript/ai-devtools/package.json b/packages/typescript/ai-devtools/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-devtools-core",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "description": "Core TanStack AI Devtools",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-gemini/CHANGELOG.md b/packages/typescript/ai-gemini/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @tanstack/ai-gemini
 
+## 0.3.0
+
+### Minor Changes
+
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.3.2
 
 ### Patch Changes

diff --git a/packages/typescript/ai-gemini/package.json b/packages/typescript/ai-gemini/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-gemini",
-  "version": "0.3.2",
+  "version": "0.3.0",
   "description": "Google Gemini adapter for TanStack AI",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-grok/CHANGELOG.md b/packages/typescript/ai-grok/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @tanstack/ai-grok
 
+## 0.3.0
+
+### Minor Changes
+
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.1.0
 
 ### Minor Changes

diff --git a/packages/typescript/ai-grok/package.json b/packages/typescript/ai-grok/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-grok",
-  "version": "0.1.0",
+  "version": "0.3.0",
   "description": "Grok (xAI) adapter for TanStack AI",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-ollama/CHANGELOG.md b/packages/typescript/ai-ollama/CHANGELOG.md
@@ -4,6 +4,24 @@
 
 ### Minor Changes
 
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
+## 0.3.0
+
+### Minor Changes
+
 - Update ollama model meta and add more model options. ([#117](https://github.com/TanStack/ai/pull/117))
 
 ### Patch Changes

diff --git a/packages/typescript/ai-openai/CHANGELOG.md b/packages/typescript/ai-openai/CHANGELOG.md
@@ -4,6 +4,24 @@
 
 ### Minor Changes
 
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
+## 0.3.0
+
+### Minor Changes
+
 - allows additional configuration options when creating an openAI client ([#245](https://github.com/TanStack/ai/pull/245))
 
 ## 0.2.1

diff --git a/packages/typescript/ai-openrouter/CHANGELOG.md b/packages/typescript/ai-openrouter/CHANGELOG.md
@@ -1,5 +1,23 @@
 # @tanstack/ai-openrouter
 
+## 0.3.0
+
+### Minor Changes
+
+- feat: Add AG-UI protocol events to streaming system ([#244](https://github.com/TanStack/ai/pull/244))
+
+  All text adapters now emit AG-UI protocol events only:
+  - `RUN_STARTED` / `RUN_FINISHED` - Run lifecycle events
+  - `TEXT_MESSAGE_START` / `TEXT_MESSAGE_CONTENT` / `TEXT_MESSAGE_END` - Text message streaming
+  - `TOOL_CALL_START` / `TOOL_CALL_ARGS` / `TOOL_CALL_END` - Tool call streaming
+
+  Only AG-UI event types are supported; previous legacy chunk formats (`content`, `tool_call`, `done`, etc.) are no longer accepted.
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+
 ## 0.1.0
 
 ### Minor Changes

diff --git a/packages/typescript/ai-openrouter/package.json b/packages/typescript/ai-openrouter/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-openrouter",
-  "version": "0.1.0",
+  "version": "0.3.0",
   "description": "OpenRouter adapter for TanStack AI",
   "author": "",
   "license": "MIT",

diff --git a/packages/typescript/ai-preact/CHANGELOG.md b/packages/typescript/ai-preact/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-preact
 
+## 0.3.0
+
+### Patch Changes
+
+- Updated dependencies [[`e52135f`](https://github.com/TanStack/ai/commit/e52135f6ec3285227679411636e208ae84a408d7)]:
+  - @tanstack/ai@0.3.0
+  - @tanstack/ai-client@0.3.0
+
 ## 0.1.1
 
 ### Patch Changes

diff --git a/packages/typescript/ai-preact/package.json b/packages/typescript/ai-preact/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-preact",
-  "version": "0.1.1",
+  "version": "0.3.0",
   "description": "Preact hooks for TanStack AI",
   "author": "",
   "license": "MIT",