> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sentfrom.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Agent frameworks

> Drop SentFromAI into OpenClaw, LangChain, CrewAI, the OpenAI Agents SDK, the Vercel AI SDK, and more.

SentFromAI is just a REST API, so it plugs into any agent framework. There are two paths:

<CardGroup cols={2}>
  <Card title="MCP (zero glue)" icon="plug" href="/guides/mcp">
    Connect the [SentFromAI MCP server](/guides/mcp) and email becomes native tools — no per-framework
    wiring. Best if your runtime speaks MCP.
  </Card>

  <Card title="Native tools" icon="wrench" href="/frameworks/langchain">
    Wrap a few REST calls as your framework's tool type. Use this when you want full control or your
    framework doesn't do MCP yet.
  </Card>
</CardGroup>

## The tool surface

Whatever the framework, you're exposing a handful of operations to the model. The recipes use these:

| Tool                                      | Endpoint                    |
| ----------------------------------------- | --------------------------- |
| `create_inbox(local_part)`                | `POST /inboxes`             |
| `send_email(inbox_id, to, subject, body)` | `POST /messages`            |
| `check_inbox(inbox_id)`                   | `GET /messages?inbox_id=…`  |
| `reply(message_id, body)`                 | `POST /messages/{id}/reply` |

Each call is a Bearer-authenticated request to `https://api.sentfrom.ai/v1` ([auth](/authentication)).

## Recipes

<CardGroup cols={3}>
  <Card title="OpenClaw" href="/frameworks/openclaw" />

  <Card title="LangChain" href="/frameworks/langchain" />

  <Card title="OpenAI Agents SDK" href="/frameworks/openai-agents" />

  <Card title="Vercel AI SDK" href="/frameworks/vercel-ai-sdk" />

  <Card title="CrewAI" href="/frameworks/crewai" />

  <Card title="LlamaIndex" href="/frameworks/llamaindex" />

  <Card title="Anthropic (Claude)" href="/frameworks/anthropic" />
</CardGroup>

<Note>
  These are starting points — adapt the tool set and your framework's exact API to your version.
  The endpoints they call are stable.
</Note>