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@letta-ai

Letta

Letta is an AI lab building machines that learn
README.md

Hello World 👾

Letta Logo

Letta is an AI lab building machines that learn: persistent agents with the ability to continuously learn and adapt from their own experience.

Try Letta Code, the memory-first agent:

npm install -g @letta-ai/letta-code

# then navigate to a project directory, and run `letta`
cd my-project
letta

Useful links:

Made with 💜 by our team in San Francisco (join us!) and over 100 individual contributors from around the world.

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  1. letta-code letta-code Public

    Stateful agents that are like people, with memory, identity, and the ability to learn and adapt

    TypeScript 3.6k 439

  2. letta-agent-sdk letta-agent-sdk Public

    The Letta Agent SDK is the SDK for stateful agents. Each agent has its own identity and long-term memory, and keeps both across conversations, models, and the computers it runs on.

    TypeScript 108 25

  3. letta-oss-ui letta-oss-ui Public

    An open-source demo UI built on top of the Letta Agent SDK

    TypeScript 85 26

  4. skills skills Public

    A shared repository for skills. Intended to be used with Letta Code, Claude Code, Codex CLI, and other agents that support skills.

    Python 150 29

  5. agent-file agent-file Public

    Agent File (.af): An open file format for serializing stateful AI agents with persistent memory and behavior. Share, checkpoint, and version control agents across compatible frameworks.

    TypeScript 1.2k 119

  6. trajectory trajectory Public

    Convert sessions across harnesses to a unified trajectory format - designed to be consumed by agents (e.g. for memory formation, dreaming, search)

    TypeScript 278 26

Repositories

Showing 10 of 61 repositories
  • letta-code Public

    Stateful agents that are like people, with memory, identity, and the ability to learn and adapt

    letta-ai/letta-code's past year of commit activity
    TypeScript 3,635 Apache-2.0 439 185 344 Updated Oct 16, 2026
  • letta-acp Public

    ACP (Agent Client Protocol) adapter for Letta — use stateful Letta agents from Zed and other ACP clients

    letta-ai/letta-acp's past year of commit activity
    TypeScript 11 Apache-2.0 8 5 5 Updated Oct 16, 2026
  • letta-agent-sdk Public

    The Letta Agent SDK is the SDK for stateful agents. Each agent has its own identity and long-term memory, and keeps both across conversations, models, and the computers it runs on.

    letta-ai/letta-agent-sdk's past year of commit activity
    TypeScript 108 Apache-2.0 24 16 12 Updated Oct 15, 2026
  • letta-computer-deployment Public

    Deploy an always-on computer connected to Letta Cloud

    letta-ai/letta-computer-deployment's past year of commit activity
    Shell 17 17 0 2 Updated Oct 15, 2026
  • agent-file Public

    Agent File (.af): An open file format for serializing stateful AI agents with persistent memory and behavior. Share, checkpoint, and version control agents across compatible frameworks.

    letta-ai/agent-file's past year of commit activity
    TypeScript 1,209 Apache-2.0 119 7 3 Updated Oct 13, 2026
  • letta-docs-md Public

    Automatically generated Markdown mirror of docs.letta.com, ready to grep. Do not edit by hand or open pull requests.

    letta-ai/letta-docs-md's past year of commit activity
    3 3 0 0 Updated Oct 13, 2026
  • letta-python Public

    A Python SDK for accessing the Letta API

    letta-ai/letta-python's past year of commit activity
    Python 55 Apache-2.0 17 3 4 Updated Oct 12, 2026
  • letta-node Public

    A TypeScript SDK for accessing the Letta API

    letta-ai/letta-node's past year of commit activity
    TypeScript 47 Apache-2.0 15 2 2 Updated Oct 13, 2026
  • letta-discord-bot-example Public

    An example Discord chatbot built on the Letta API, which uses a stateful agent (agent with memory) under the hood.

    letta-ai/letta-discord-bot-example's past year of commit activity
    TypeScript 39 MIT 20 5 0 Updated Oct 9, 2026
  • letta-oss-ui Public

    An open-source demo UI built on top of the Letta Agent SDK

    letta-ai/letta-oss-ui's past year of commit activity
    TypeScript 85 Apache-2.0 26 5 1 Updated Oct 9, 2026
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