Letta Code

Stateful agent harness whose agents keep memory across sessions and run on schedules through a CLI, browser and chat apps.

Agent by Letta

IndexedApache-2.0★ 3,704

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About

Letta Code is an agent harness for stateful agents that keep memory and can rewrite their own memory, skills and prompts over time. It can be used interactively from a local CLI, from a browser including mobile, or through Slack, Telegram and Discord integrations, and it can power always-on agents with crons and schedules. Features include skills, subagents, hooks, permission modes, secrets and remote computers that require signing in to Letta. It is installed with npm, uv or pipx.

Use cases: coding, agent-memory, code-generation, workflow-automation

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Fact sheet

Jobs: codingREADME
Autonomy: Autonomous: runs tasks end to end and reports backREADME
Where you use it: Terminal, Web, Mobile, Slack, otherREADME
Hosting: Hosted or self-hostedREADME
Interfaces: agent-skillsREADME
Open source: Yes

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Built on

Frameworks named in its dependency files.

0.867score
Pi Agent Core
Earendil
Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves.
HarnessAFreshness: A★ 117.6K↓ 5.1M/wk

Signals

Stars: 3,704
Forks: 447
Open issues: 189
Last commit: Oct 24, 2026 (5 days ago)
Last release: Oct 22, 2026 (6 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License: Apache-2.0
Repository: github.com/letta-ai/letta-code
Website: www.letta.com/agent
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: README github-graphql

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Letta Code. Agent Mart. https://agentmart.dev/agents/letta-code (last updated 2026-10-24)