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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 3.5k 426

  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 104 23

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

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

    TypeScript 82 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 145 27

  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 118

  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 264 25

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 3,485 Apache-2.0 426 174 309 Updated Oct 1, 2026
  • signal-desktop-app Public

    Fork of https://github.com/signalapp/signal-desktop running on Letta Agent SDK

    letta-ai/signal-desktop-app's past year of commit activity
    TypeScript 5 AGPL-3.0 2 0 3 Updated Oct 1, 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 4 4 4 Updated Oct 1, 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 104 Apache-2.0 22 16 10 Updated Sep 30, 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 16 0 2 Updated Sep 30, 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
    2 2 0 0 Updated Sep 29, 2026
  • harbor Public Forked from harbor-framework/harbor

    Harbor is a framework for running agent evaluations and creating and using RL environments.

    letta-ai/harbor's past year of commit activity
    Python 2 Apache-2.0 1,891 0 1 Updated Sep 27, 2026
  • mods Public

    Letta Code mod packages and examples

    letta-ai/mods's past year of commit activity
    TypeScript 21 27 0 10 Updated Sep 25, 2026
  • trajectory Public

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

    letta-ai/trajectory's past year of commit activity
    TypeScript 264 Apache-2.0 24 1 9 Updated Sep 25, 2026
  • claude-subconscious Public

    Give Claude Code a subconscious

    letta-ai/claude-subconscious's past year of commit activity
    TypeScript 2,901 MIT 223 4 4 Updated Sep 25, 2026
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