# Letta

> Letta is an open source framework for building stateful AI agents with memory and reasoning capabilities.

Letta enables developers to create AI agents that can remember context across conversations, manage their own memory, and perform complex multi-step tasks. The framework provides tools for memory management, tool execution, and multi-agent coordination.

## Accessing Full Content

Append `/index.md` to any documentation URL to get the LLM-friendly markdown version of that page. For example:
- `https://docs.letta.com/quickstart` → `https://docs.letta.com/quickstart/index.md`

## Documentation

- [Getting Started](https://docs.letta.com/quickstart/index.md): Quick start guide for Letta
- [Agents Overview](https://docs.letta.com/guides/agents/overview/index.md): Understanding Letta agents
- [Memory Overview](https://docs.letta.com/guides/memory/overview/index.md): How agent memory works
- [Memory Blocks](https://docs.letta.com/guides/memory/memory-blocks/index.md): In-context memory segments
- [Archival Memory](https://docs.letta.com/guides/memory/archival-memory/index.md): Long-term searchable memory
- [Custom Tools](https://docs.letta.com/guides/agents/custom-tools/index.md): Creating custom tools for agents
- [Streaming](https://docs.letta.com/guides/agents/streaming/index.md): Streaming agent responses
- [Multi-agent Systems](https://docs.letta.com/guides/agents/multi-agent/index.md): Building multi-agent applications
- [Tool Rules](https://docs.letta.com/guides/agents/tool-rules/index.md): Controlling tool execution order

## Tutorials

- [Hello World](https://docs.letta.com/tutorials/hello-world/index.md): Build your first Letta agent
- [PDF Chat](https://docs.letta.com/tutorials/pdf-chat/index.md): Build a PDF chat agent
- [Custom RAG](https://docs.letta.com/tutorials/custom-rag-integration/index.md): Custom RAG integration
- [Discord Bot](https://docs.letta.com/tutorials/discord-bot/index.md): Build a Discord bot with Letta

## API Reference

- [API Overview](https://docs.letta.com/api-reference/overview/index.md): REST API documentation
- [SDK Migration Guide](https://docs.letta.com/api-reference/sdk-migration-guide/index.md): Migrating to SDK v1.0

## Integrations

- [Vercel AI SDK](https://docs.letta.com/guides/frameworks/vercel-ai-sdk/index.md): Using Letta with Vercel AI SDK
- [LangChain](https://docs.letta.com/guides/frameworks/langchain/index.md): Using Letta with LangChain
- [MCP Servers](https://docs.letta.com/guides/mcp/overview/index.md): Model Context Protocol integration
- [Voice (LiveKit)](https://docs.letta.com/guides/voice/livekit/index.md): Building voice agents with LiveKit

## Optional

- [GitHub Repository](https://github.com/letta-ai/letta): Source code and issues
- [Discord Community](https://discord.gg/letta): Community support
- [Forum](https://forum.letta.com): Discussion forum