TanStack/ai

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🤖 Type-safe, provider-agnostic TypeScript AI SDK for streaming chat, tool calling, agents, and multimodal apps across OpenAI, Anthropic, Gemini, React, Vue, Svelte, and Solid.

Stars: 3.1k
Forks: 331
Open beginner issues: 0
Indexed issues: 47
Avg merge: 1d 22h
Merged PRs (30d): 160

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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47 open issues indexed

structuredOutput(): a finish_reason=length truncation is reported as a JSON parse error (openai-base, ai-openrouter) Open

has-pr needs-repro waiting-on: maintainer

TanStack/ai#1426 · 1 comment · 1 assignee · Opened Sep 19, 2026
ai-anthropic: modelOptions.mcp_servers is forwarded without the mcp-client beta header Open

has-pr waiting-on: maintainer

TanStack/ai#1424 · 1 assignee · Opened Sep 19, 2026
Rejoining an in-flight run loses the assistant message when the stream starts with reasoning Open

waiting-on: maintainer

TanStack/ai#1422 · 1 assignee · Opened Sep 18, 2026
Cancelled/denied tool calls are indistinguishable from genuine failures Open

has-pr waiting-on: maintainer

TanStack/ai#1386 · 1 assignee · Opened Sep 15, 2026
openaiCompatible: summarize({ maxLength }) sends no token cap Open

bug has-pr waiting-on: maintainer

TanStack/ai#1385 · 1 assignee · Opened Sep 15, 2026
Add ai to awesome-ai-plugins? Open

waiting-on: maintainer

TanStack/ai#1382 · 1 assignee · Opened Sep 14, 2026
Worldlabs adapter Open

has-pr waiting-on: maintainer

TanStack/ai#1378 · 1 assignee · Opened Sep 14, 2026
Once the model reasons more than once in one response, sending that turn back 400s forever Open

has-pr waiting-on: maintainer

TanStack/ai#1345 · 1 assignee · Opened Sep 8, 2026
Mid-stream resume duplicates the reasoning block on an empty-summary turn Open

has-pr waiting-on: maintainer

TanStack/ai#1344 · 1 assignee · Opened Sep 8, 2026
Hydration failure with persistence: true is silent, apps can't show a load error Open

has-pr waiting-on: maintainer

TanStack/ai#1331 · 1 assignee · Opened Sep 4, 2026
Provider-executed web search results are dropped on OpenAI and Gemini (forwarded on Anthropic) Open

has-pr waiting-on: maintainer

TanStack/ai#1328 · 1 assignee · Opened Sep 4, 2026
Make review a sweep Open

has-pr waiting-on: maintainer

TanStack/ai#1325 · 1 assignee · Opened Sep 4, 2026
Optimise test suite Open

has-pr waiting-on: maintainer

TanStack/ai#1318 · 1 assignee · Opened Sep 3, 2026
ChatClient reports status ready before connect() adapter queue drains Open

waiting-on: maintainer

TanStack/ai#1298 · 4 comments · 1 assignee · Opened Sep 2, 2026
AG-UI activity support is non-functional: events are never processed, and `role: 'activity'` messages are destroyed Open

has-pr waiting-on: maintainer

TanStack/ai#1286 · 1 assignee · Opened Sep 1, 2026
Multimodal tool results lose their image parts on the client round trip Open

has-pr waiting-on: maintainer

TanStack/ai#1283 · 1 assignee · Opened Sep 1, 2026
Client-tool `output-error` state is lost during native interrupt resolution Open

has-pr waiting-on: maintainer

TanStack/ai#1219 · 1 assignee · Opened Aug 23, 2026
@tanstack/openai-base: tools silently lose strict mode when their schema cannot be coerced Open

needs-repro waiting-on: maintainer

TanStack/ai#1213 · 2 comments · 1 assignee · Opened Aug 23, 2026
`ChatClient` schedules one macrotask per live stream chunk and accumulates seconds of processing latency Open

has-pr waiting-on: maintainer

TanStack/ai#1193 · 1 assignee · Opened Aug 22, 2026
Should TanStack markdown be used in TanStack AI's UI packages/Tanstack ecosystem? Open

waiting-on: maintainer

TanStack/ai#1342 · 2 comments · 3 reactions · 1 assignee · Opened Aug 17, 2026
ai-sandbox-daytona: SDK functions that the adapter does not use — log stream, session stdin, PTY kill, native fs/git, network policy Open

needs-repro waiting-on: maintainer

TanStack/ai#1085 · 1 comment · 1 assignee · Opened Aug 11, 2026
ai-sandbox-daytona: resume() returns a handle to a stopped sandbox — thread reuse does not work after the 15-minute auto-stop Open

waiting-on: maintainer

TanStack/ai#1083 · 1 assignee · Opened Aug 11, 2026
chat() silently ignores unknown top-level options — providerOptions typechecks through a spread and is discarded Open

has-pr waiting-on: maintainer

TanStack/ai#1073 · 1 comment · 1 assignee · Opened Aug 10, 2026
ai-persistence: expose finished-run timings (startedAt/finishedAt) in reconstructChat Open

waiting-on: maintainer

TanStack/ai#1061 · 1 assignee · Opened Aug 7, 2026
ai-openrouter: unconditional `stream_options.include_usage` injection breaks `provider.require_parameters: true` Open

has-pr waiting-on: maintainer

TanStack/ai#1037 · 1 comment · 1 assignee · Opened Jul 31, 2026
feat(ai-sandbox): persist sandbox workspace / filesystem data across lifecycle Open

enhancement persistence waiting-on: maintainer

TanStack/ai#1029 · 1 comment · 1 assignee · Opened Jul 31, 2026
chat(): client-tool and approval waits skip onFinish and leave OpenTelemetry spans open Open

has-pr waiting-on: maintainer

TanStack/ai#1028 · 1 assignee · Opened Jul 31, 2026
Structured output: support response_format: json_object for providers without strict json_schema Open

waiting-on: maintainer

TanStack/ai#1005 · 2 comments · 1 assignee · Opened Jul 28, 2026
UseGenerationReturn discards TInput: `generate` is typed `(input: Record<string, any>)` Open

waiting-on: maintainer

TanStack/ai#1003 · 1 comment · 1 assignee · Opened Jul 27, 2026
useGeneration (ai-react): caller-supplied `devtools` can override the framework identification Open

has-pr waiting-on: maintainer

TanStack/ai#1002 · 1 assignee · Opened Jul 27, 2026
`@tanstack/ai-bedrock`: the AWS SDK cannot be bundled — variable-specifier dynamic imports defeat static bundlers (incl. esbuild) Open

waiting-on: maintainer

TanStack/ai#929 · 1 assignee · Opened Jul 13, 2026
feat(ai): native Files API support across providers (upload adapters + `file` content source) Open

has-pr waiting-on: maintainer

TanStack/ai#909 · 1 comment · 1 reaction · 1 assignee · Opened Jul 7, 2026
@tanstack/ai-claude-code: stream tool-call arguments (forward input_json_delta → TOOL_CALL_ARGS) Open

has-pr waiting-on: maintainer

TanStack/ai#901 · 1 assignee · Opened Jul 6, 2026
Virtualizing a streaming agent chat: gaps between TanStack Virtual and an AI rendering layer Open

needs-repro waiting-on: maintainer

TanStack/ai#757 · 1 comment · 1 assignee · Opened Jun 14, 2026
E2E: add Bedrock Converse (AWS event-stream) provider to aimock Open

waiting-on: author

TanStack/ai#669 · 1 comment · 1 assignee · Opened May 31, 2026
Create schemas library Open

waiting-on: maintainer

TanStack/ai#619 · 1 assignee · Opened May 22, 2026
bug(e2e): multi-turn structured output regresses for Anthropic on native combined path (#605 follow-up) Open

waiting-on: maintainer

TanStack/ai#613 · 1 assignee · Opened May 21, 2026
Add a pluggable media uploader so large video downloads don't OOM serverless runtimes Open

waiting-on: author

TanStack/ai#539 · 1 comment · 1 assignee · Opened May 8, 2026
Video duration validation: support template strings (e.g. "6s", "auto") and add snapDuration helper Open

waiting-on: maintainer

TanStack/ai#538 · 1 assignee · Opened May 8, 2026
Type conflict: @ag-ui/core 0.0.49 (Zod 3) breaks consumer Zod 4 type checking Open

waiting-on: author

TanStack/ai#520 · 3 comments · 1 reaction · 1 assignee · Opened May 1, 2026
Redesign ts-react-chat: clean up UI and merge in ts-react-media (fal) example Open

waiting-on: maintainer

TanStack/ai#510 · 1 assignee · Opened Apr 27, 2026
OpenAI ProviderTools that require user-execution (e.g. apply_patch, shell) are silently dropped / do not work. Open

waiting-on: maintainer

TanStack/ai#495 · 1 assignee · Opened Apr 22, 2026
feat: add smoothStream transform for word-by-word text delivery Open

waiting-on: maintainer

TanStack/ai#439 · 2 comments · 1 assignee · Opened Apr 10, 2026
createOpenaiChat example from docs produce type error Open

waiting-on: maintainer

TanStack/ai#392 · 1 assignee · Opened Mar 21, 2026
OpenRouter adapter stops before executing tools Open

waiting-on: maintainer

TanStack/ai#371 · 1 comment · 1 assignee · Opened Mar 13, 2026
Anthropic Adapter does not always return valid JSON Open

needs-repro waiting-on: author

TanStack/ai#282 · 3 comments · 1 assignee · Opened Feb 10, 2026
Dependency Dashboard Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

TanStack/ai#50 · 1 comment · Opened Nov 29, 2025

TanStack/ai

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