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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 3.7k 443

  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 110 25

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

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

    TypeScript 89 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 152 30

  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 281 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 3,681 Apache-2.0 443 187 328 Updated Oct 22, 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 12 Apache-2.0 8 5 5 Updated Oct 22, 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 15 2 2 Updated Oct 22, 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 5 Updated Oct 22, 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 110 Apache-2.0 25 16 12 Updated Oct 21, 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 19 17 0 2 Updated Oct 21, 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
    4 3 0 0 Updated Oct 20, 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 89 Apache-2.0 26 0 0 Updated Oct 20, 2026
  • awesome-letta Public

    A curated list of awesome Letta projects, tools, tutorials, and resources for building stateful AI agents with persistent memory.

    letta-ai/awesome-letta's past year of commit activity
    44 MIT 11 0 1 Updated Oct 19, 2026
  • letta Public

    Platform for stateful agents: AI with advanced memory that can learn and self-improve over time.

    letta-ai/letta's past year of commit activity
    25,229 Apache-2.0 2,651 0 0 Updated Oct 18, 2026
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