TanStack · AlemTuzlak · Aug 28, 2026 · Aug 28, 2026
diff --git a/.changeset/ai-compaction.md b/.changeset/ai-compaction.md
diff --git a/.changeset/ai-tuple-item-maps.md b/.changeset/ai-tuple-item-maps.md
diff --git a/.changeset/compaction-devtools.md b/.changeset/compaction-devtools.md
diff --git a/.changeset/compaction-persistence-integration.md b/.changeset/compaction-persistence-integration.md
diff --git a/.changeset/middleware-emit-custom-event.md b/.changeset/middleware-emit-custom-event.md
diff --git a/.changeset/sync-models.md b/.changeset/sync-models.md
diff --git a/examples/ag-ui/CHANGELOG.md b/examples/ag-ui/CHANGELOG.md
@@ -1,5 +1,14 @@
 # ag-ui
 
+## 0.0.16
+
+### Patch Changes
+
+- Updated dependencies [[`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai-client@0.29.2
+  - @tanstack/ai-react@0.22.4
+  - @tanstack/ai-react-ui@0.8.22
+
 ## 0.0.15
 
 ### Patch Changes

diff --git a/examples/ag-ui/package.json b/examples/ag-ui/package.json
@@ -2,7 +2,7 @@
   "name": "ag-ui",
   "private": true,
   "type": "module",
-  "version": "0.0.15",
+  "version": "0.0.16",
   "scripts": {
     "detect-servers": "node scripts/detect-servers.mjs",
     "predev": "node scripts/detect-servers.mjs",

diff --git a/packages/ai-acp/CHANGELOG.md b/packages/ai-acp/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-acp
 
+## 0.3.8
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-sandbox@0.5.4
+
 ## 0.3.7
 
 ### Patch Changes

diff --git a/packages/ai-acp/package.json b/packages/ai-acp/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-acp",
-  "version": "0.3.7",
+  "version": "0.3.8",
   "description": "Shared Agent Client Protocol (ACP) transport, session, and AG-UI translation for TanStack AI harness adapters.",
   "author": "",
   "license": "MIT",

diff --git a/packages/ai-angular/CHANGELOG.md b/packages/ai-angular/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-angular
 
+## 0.7.4
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-client@0.29.2
+
 ## 0.7.3
 
 ### Patch Changes

diff --git a/packages/ai-angular/package.json b/packages/ai-angular/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-angular",
-  "version": "0.7.3",
+  "version": "0.7.4",
   "description": "Angular signals integration for TanStack AI streaming chat, structured outputs, and media generation.",
   "author": "",
   "license": "MIT",

diff --git a/packages/ai-anthropic/CHANGELOG.md b/packages/ai-anthropic/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @tanstack/ai-anthropic
 
+## 0.18.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+
 ## 0.18.2
 
 ### Patch Changes

diff --git a/packages/ai-anthropic/package.json b/packages/ai-anthropic/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-anthropic",
-  "version": "0.18.2",
+  "version": "0.18.3",
   "description": "Anthropic Claude adapter for TanStack AI chat, tool calling, thinking, and structured outputs.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-bedrock/CHANGELOG.md b/packages/ai-bedrock/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-bedrock
 
+## 0.3.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/openai-base@0.10.8
+
 ## 0.3.2
 
 ### Patch Changes

diff --git a/packages/ai-bedrock/package.json b/packages/ai-bedrock/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-bedrock",
-  "version": "0.3.2",
+  "version": "0.3.3",
   "type": "module",
   "description": "Amazon Bedrock adapter for TanStack AI — OpenAI-compatible chat, responses, tools, and reasoning.",
   "author": "",

diff --git a/packages/ai-byteplus/CHANGELOG.md b/packages/ai-byteplus/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-byteplus
 
+## 0.3.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/openai-base@0.10.8
+
 ## 0.3.2
 
 ### Patch Changes

diff --git a/packages/ai-byteplus/package.json b/packages/ai-byteplus/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-byteplus",
-  "version": "0.3.2",
+  "version": "0.3.3",
   "description": "BytePlus ModelArk adapter for TanStack AI: Seed LLM chat, Seedance video, Seedream image, and Seed Speech TTS/ASR.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-claude-code/CHANGELOG.md b/packages/ai-claude-code/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-claude-code
 
+## 0.6.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-sandbox@0.5.4
+
 ## 0.6.2
 
 ### Patch Changes

diff --git a/packages/ai-claude-code/package.json b/packages/ai-claude-code/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-claude-code",
-  "version": "0.6.2",
+  "version": "0.6.3",
   "description": "Claude Code harness adapter for TanStack AI — run Claude Code as a chat backend with local tool execution and stateful sessions.",
   "author": "",
   "license": "MIT",

diff --git a/packages/ai-client/CHANGELOG.md b/packages/ai-client/CHANGELOG.md
@@ -1,5 +1,19 @@
 # @tanstack/ai-client
 
+## 0.29.2
+
+### Patch Changes
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Show compaction in TanStack AI DevTools. `withCompaction` injects
+  `compaction:started`, `compaction:state`, and `compaction:ended` CUSTOM
+  stream events. State includes before/after counts, the token budget, and
+  dropped vs sent message previews. The chat client re-emits the same three
+  events. The AI panel has a Compaction tab and started/state/ended steps on
+  the iteration.
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-event-client@0.11.2
+
 ## 0.29.1
 
 ### Patch Changes

diff --git a/packages/ai-client/package.json b/packages/ai-client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-client",
-  "version": "0.29.1",
+  "version": "0.29.2",
   "description": "Framework-agnostic headless client for TanStack AI chat, realtime sessions, streaming transports, and media generations.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-code-mode-snippets/CHANGELOG.md b/packages/ai-code-mode-snippets/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-code-mode-snippets
 
+## 0.4.7
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-code-mode@0.4.7
+
 ## 0.4.6
 
 ### Patch Changes

diff --git a/packages/ai-code-mode-snippets/package.json b/packages/ai-code-mode-snippets/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-code-mode-snippets",
-  "version": "0.4.6",
+  "version": "0.4.7",
   "description": "Persistent runtime snippet library for TanStack AI Code Mode agents and sandboxed tool orchestration.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-code-mode/CHANGELOG.md b/packages/ai-code-mode/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @tanstack/ai-code-mode
 
+## 0.4.7
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+
 ## 0.4.6
 
 ### Patch Changes

diff --git a/packages/ai-code-mode/package.json b/packages/ai-code-mode/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-code-mode",
-  "version": "0.4.6",
+  "version": "0.4.7",
   "description": "Secure TypeScript Code Mode for TanStack AI agents to execute sandboxed tool orchestration programs.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-codex/CHANGELOG.md b/packages/ai-codex/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @tanstack/ai-codex
 
+## 0.5.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-sandbox@0.5.4
+
 ## 0.5.2
 
 ### Patch Changes

diff --git a/packages/ai-codex/package.json b/packages/ai-codex/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-codex",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "description": "Codex harness adapter for TanStack AI — run OpenAI Codex as a chat backend with local tool execution and stateful sessions.",
   "author": "",
   "license": "MIT",

diff --git a/packages/ai-cohere/CHANGELOG.md b/packages/ai-cohere/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @tanstack/ai-cohere
 
+## 0.3.3
+
+### Patch Changes
+
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+
 ## 0.3.2
 
 ### Patch Changes

diff --git a/packages/ai-cohere/package.json b/packages/ai-cohere/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-cohere",
-  "version": "0.3.2",
+  "version": "0.3.3",
   "description": "Cohere adapter for TanStack AI — multimodal embeddings and document reranking.",
   "author": "Tanner Linsley",
   "license": "MIT",

diff --git a/packages/ai-compaction/CHANGELOG.md b/packages/ai-compaction/CHANGELOG.md
@@ -0,0 +1,34 @@
+# @tanstack/ai-compaction
+
+## 0.1.0
+
+### Minor Changes
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Add `@tanstack/ai-compaction` — context-window compaction as a `chat()`
+  middleware. `withCompaction({ maxTokens, strategy })` runs a pluggable
+  `CompactionStrategy` before each model call, so compaction is incremental and
+  rolling. Three strategies ship built in: `evictOldest` (drop old messages, the
+  default), `summarizeOldest` (replace them with an LLM summary), and
+  `clearToolResults` (stub old tool output, keep the messages). Combine them with
+  `composeStrategies`, which escalates through strategies until the transcript is
+  back under budget. Strategies preserve tool-call/result pairing and never touch
+  the system prompt.
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Show compaction in TanStack AI DevTools. `withCompaction` injects
+  `compaction:started`, `compaction:state`, and `compaction:ended` CUSTOM
+  stream events. State includes before/after counts, the token budget, and
+  dropped vs sent message previews. The chat client re-emits the same three
+  events. The AI panel has a Compaction tab and started/state/ended steps on
+  the iteration.
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Keep canonical chat history separate from compacted provider context. Reuse
+  validated compaction checkpoints through an optional persistence metadata store.
+
+### Patch Changes
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Add `ctx.emitCustomEvent` on chat middleware context. The engine yields
+  `CUSTOM` chunks while hooks such as `onConfig` are still running, so a long
+  middleware step can send progress before it finishes. Compaction uses this
+  to emit `compaction:started` before the strategy returns.
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
diff --git a/packages/ai-compaction/package.json b/packages/ai-compaction/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tanstack/ai-compaction",
-  "version": "0.0.1",
+  "version": "0.1.0",
   "description": "Context-window compaction middleware for TanStack AI chat()",
   "author": "",
   "license": "MIT",

diff --git a/packages/ai-devtools/CHANGELOG.md b/packages/ai-devtools/CHANGELOG.md
@@ -1,5 +1,19 @@
 # @tanstack/ai-devtools-core
 
+## 0.5.11
+
+### Patch Changes
+
+- [#1235](https://github.com/TanStack/ai/pull/1235) [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7) - Show compaction in TanStack AI DevTools. `withCompaction` injects
+  `compaction:started`, `compaction:state`, and `compaction:ended` CUSTOM
+  stream events. State includes before/after counts, the token budget, and
+  dropped vs sent message previews. The chat client re-emits the same three
+  events. The AI panel has a Compaction tab and started/state/ended steps on
+  the iteration.
+- Updated dependencies [[`49fc54c`](https://github.com/TanStack/ai/commit/49fc54ca0aacf2fc60bb36647a61a23559dda4bc), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7), [`e04ff6a`](https://github.com/TanStack/ai/commit/e04ff6abcb86c5ede17cd8c1c96df82e9aae03d7)]:
+  - @tanstack/ai@0.52.0
+  - @tanstack/ai-event-client@0.11.2
+
 ## 0.5.10
 
 ### Patch Changes