# AI Sdk

> Answer questions about the AI SDK and help build AI-powered features. Use when developers: (1) Ask about AI SDK functions like generateText, streamText, ToolLoopAgent, embed, or tools, (2) Want to build AI agents, chatbots, RAG systems, or text generation features, (3) Have questions about AI providers (OpenAI, Anthropic, Google, etc.), streaming, tool calling, structured output, or embeddings, (4) Use React hooks like useChat or useCompletion. Triggers on: "AI SDK", "Vercel AI SDK", "generateText", "streamText", "add AI to my app", "build an agent", "tool calling", "structured output", "useChat".

- Skill: `somtougeh/ai-sdk` (Agent Skill, multi-file: 5 files)
- Install (CLI): `npx skillmds@latest add somtougeh/ai-sdk`
- Raw SKILL.md: https://api.skillmd.com/api/skills/somtougeh/ai-sdk/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: SomtoUgeh (https://skillmd.com/u/somtougeh)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/somtougeh/ai-sdk

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## Prerequisites

This information targets AI SDK 7. If the project has the package installed,
compare against `node_modules/ai/package.json` and use documentation matching
that version.

Before searching remote docs, check whether `node_modules/ai/docs/` exists. If
it does not, use the official versioned documentation at `ai-sdk.dev`. Do not
change project dependencies merely to obtain documentation.

Install `ai`, provider packages, or client packages only when implementation
requires them and the user's request authorizes adding that functionality. Use
the project's existing package manager and version policy.

## Critical: Do Not Trust Internal Knowledge

Everything you know about the AI SDK is outdated or wrong. Your training data contains obsolete APIs, deprecated patterns, and incorrect usage.

**When working with the AI SDK:**

1. Identify the installed AI SDK version, or the requested target version
2. Search `node_modules/ai/docs/` and `node_modules/ai/src/` for current APIs
3. If not found locally, search ai-sdk.dev documentation (instructions below)
4. Never rely on memory - always verify against source code or docs
5. **`useChat` has changed significantly** - check [Common Errors](references/common-errors.md) before writing client code
6. Preserve the project's existing provider and gateway unless the user asks to
   change it. If no provider has been chosen, compare the task's capability,
   data-handling, deployment, latency, and cost requirements before recommending
   one. Use [AI Gateway Reference](references/ai-gateway.md) only when Gateway is
   already in use or chosen for a stated reason.
7. Verify current model IDs against the selected provider's official catalog.
   When Vercel AI Gateway is selected, its `/v1/models` endpoint is one useful
   source. Do not infer recency from response order or choose the numerically
   highest ID automatically; select a stable model that supports the required
   tools, modalities, context, and structured-output behavior.
8. Run typecheck after changes to ensure code is correct
9. **Be minimal** - Only specify options that differ from defaults. When unsure of defaults, check docs or source rather than guessing or over-specifying.

If you cannot find documentation to support your answer, state that explicitly.

## Finding Documentation

### ai@6.0.34+

Search bundled docs and source in `node_modules/ai/`:

- **Docs**: `rg "query" node_modules/ai/docs/`
- **Source**: `rg "query" node_modules/ai/src/`

Provider packages include docs at `node_modules/@ai-sdk/<provider>/docs/`.

### Earlier versions

1. Search: `https://ai-sdk.dev/api/search-docs?q=your_query`
2. Fetch `.md` URLs from results (e.g., `https://ai-sdk.dev/docs/agents/building-agents.md`)

## When Typecheck Fails

**Before searching source code**, grep [Common Errors](references/common-errors.md) for the failing property or function name. Many type errors are caused by deprecated APIs documented there.

If not found in common-errors.md:

1. Search `node_modules/ai/src/` and `node_modules/ai/docs/`
2. Search ai-sdk.dev (for earlier versions or if not found locally)

## Building and Consuming Agents

### Creating Agents

Use `ToolLoopAgent` for iterative tool-using agents when the installed version
documents it as the appropriate abstraction. Simpler generation or a fixed tool
sequence may use a smaller API. Verify the current agent APIs before choosing.

**File conventions**: See [type-safe-agents.md](references/type-safe-agents.md) for where to save agents and tools.

**Type Safety**: When consuming agents with `useChat`, always use `InferAgentUIMessage<typeof agent>` for type-safe tool results. See [reference](references/type-safe-agents.md).

### Consuming Agents (Framework-Specific)

Before implementing agent consumption:

1. Check `package.json` to detect the project's framework/stack
2. Search documentation for the framework's quickstart guide
3. Follow the framework-specific patterns for streaming, API routes, and client integration

## References

- [Common Errors](references/common-errors.md) - Renamed parameters reference (parameters → inputSchema, etc.)
- [AI Gateway](references/ai-gateway.md) - Gateway setup and usage
- [Type-Safe Agents with useChat](references/type-safe-agents.md) - End-to-end type safety with InferAgentUIMessage
- [DevTools](references/devtools.md) - Set up local debugging and observability (development only)