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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 433

  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 107 24

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

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

    TypeScript 85 23

  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 149 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 274 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 3,584 Apache-2.0 433 188 333 Updated Oct 12, 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 107 Apache-2.0 24 16 13 Updated Oct 12, 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 12, 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 38 MIT 21 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 23 5 0 Updated Oct 10, 2026
  • letta-telegram Public

    A Modal application for serving a Letta agent on Telegram.

    letta-ai/letta-telegram's past year of commit activity
    TypeScript 23 MIT 9 0 1 Updated Oct 9, 2026
  • mods Public

    Letta Code mod packages and examples

    letta-ai/mods's past year of commit activity
    TypeScript 22 27 0 9 Updated Oct 6, 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 6, 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 18 3 4 Updated Oct 6, 2026
  • letta-code-action Public

    Integrate Letta Code into your GitHub repo to review issues, code, and more

    letta-ai/letta-code-action's past year of commit activity
    TypeScript 16 Apache-2.0 8 4 2 Updated Oct 5, 2026
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