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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 3.4k 407

  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 100 21

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

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

    TypeScript 83 22

  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 143 25

  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 116

  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 252 24

Repositories

Showing 10 of 61 repositories
  • 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 100 Apache-2.0 21 15 6 Updated Sep 16, 2026
  • 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 3,356 Apache-2.0 407 143 234 Updated Sep 16, 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 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 13 Apache-2.0 3 3 5 Updated Sep 16, 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 252 Apache-2.0 24 1 9 Updated Sep 16, 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 7 4 2 Updated Sep 16, 2026
  • agent-v1-to-v2-migration-guide Public

    Migration examples for moving Letta Agent SDK v1 integrations to v2

    letta-ai/agent-v1-to-v2-migration-guide's past year of commit activity
    TypeScript 1 0 0 1 Updated Sep 14, 2026
  • mods Public

    Letta Code mod packages and examples

    letta-ai/mods's past year of commit activity
    TypeScript 21 26 0 11 Updated Sep 14, 2026
  • skills Public

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

    letta-ai/skills's past year of commit activity
    Python 143 26 5 6 Updated Sep 13, 2026
  • letta-node Public

    A TypeScript SDK for accessing the Letta API

    letta-ai/letta-node's past year of commit activity
    TypeScript 48 Apache-2.0 14 2 1 Updated Sep 13, 2026
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