Hysen Labsletta-agent-sdk
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-agent-sdk: 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.
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.
What the project is
letta-agent-sdk is a TypeScript project hosted on GitHub. 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. The SDK for stateful agents: create an agent once, then resume it from anywhere. Each agent has its own identity and long-term memory, and keeps both across conversations, models, and the computers it runs on. The repository is maintained by letta-ai and tracks activity through its public issue tracker and commit history. Readers who want a working example rather than a bare library will find the documentation and the linked resources useful for getting a first build running.
What it offers
The letta-agent-sdk README focuses on describing the project behaviour and its intended audience instead of a long feature checklist. The description and the introductory sections explain what the tool does and which problems it addresses. Browsing the source tree shows the modules and sample files that make up the actual implementation.
How to set it up
Getting letta-agent-sdk running starts with cloning the source from https://github.com/letta-ai/letta-agent-sdk. The README lists the commands needed to fetch the code and build or launch it. Representative steps from the documentation include: npm install @letta-ai/letta-agent-sdk. After the code is on disk, the project instructions walk through configuration and any dependencies. Following the order shown in the README avoids the common setup mistakes that come from mixing steps.
License and project status
letta-agent-sdk is written primarily in TypeScript and is released under the Apache-2.0 license, which sets the terms for reuse and redistribution. The project reports around 86 stars on GitHub, a signal of how many developers have bookmarked it. The source was last updated on 2026-08-21. The canonical location is https://github.com/letta-ai/letta-agent-sdk, where the license file, the changelog and the open issues give the most current state of the work. Anyone planning to depend on it should read the license text directly before shipping it inside another product.
Editorial conclusion
The letta-agent-sdk source lives at https://github.com/letta-ai/letta-agent-sdk under the Apache-2.0 license and is mainly written in TypeScript. The README and the linked examples remain the place to confirm the current behaviour before adopting the project.
Community notes