tanstack/ai · packages/ai/skills/ai-core/structured-outputs/SKILL.md

ai-core/structured-outputs skillA

ai-core/structured-outputs is agent-read markdown (skill) from tanstack/ai: Type-safe JSON schema responses from LLMs using outputSchema on chat() and useChat(). Supports Zod, ArkType, and Valibot schemas. The adapter handles provider-specific strategies transparently — never configure structured output at the provider level. Pass stream:true alongside outputSchema for incremental JSON deltas + a completed typed object via the `structured-output.complete` event. Each successfully completed structured-output run adds a typed `StructuredOutputPart` to message history. par.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add tanstack/ai/ai-core/structured-outputs@git:20260909.53e2ec0
Exact content
mdr add tanstack/ai/ai-core/structured-outputs@sha256:b5ed1c7812e814a4

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

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Versions

versioncommittedcommitsizeaudit
git:20260909.53e2ec0 latest2026-09-09 53e2ec0 29,416 BA view · diff
git:20260903.21775ee2026-09-03 21775ee 27,758 BA view · diff
git:20260820.47699ed2026-08-20 47699ed 27,548 BA view · diff
git:20260818.eda82cc2026-08-18 eda82cc 27,092 BA view · diff
git:20260818.c63319e2026-08-18 c63319e 26,652 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (29416 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

tanstack/ai · 3,099 stars · license MIT · pushed 2026-09-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_r4uo53khnweik5v5
GET https://markdownregistry.com/api/v1/resolve?ref=tanstack/ai/ai-core/structured-outputs
GET https://markdownregistry.com/api/v1/blob/b5ed1c7812e814a46902451f7817ba70f957b8618f2be87d8c509d7f44f138b2