Agent frameworks- 25K stars
- Apache-2.0
- Updated 2026-09-10
Where it sits
- Modelthe weights
- Runtimeruns & routes it
- LettaHarnessmakes it act
- Memorymakes it remember
- Toolsgives it hands
Catalog entryVerified it exists. Install steps not tested yet.
Homepage Repo
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schema: "https://insidethemachine.ai/schema/listing.schema.json"
slug: "letta"
name: "Letta"
kind: "repo"
tier: "catalog"
category: "frameworks"
category_label: "Agent frameworks"
stack_layer: "harness"
homepage: "https://docs.letta.com/"
repo: "https://github.com/letta-ai/letta"
license: "Apache-2.0"
stars: 25156
last_push: "2026-09-10"
archived: false
tags: []
seen_in_videos: []
gap_score: null
gap_score_status: "pending test on Mac Studio"
verified_on: "2026-10-15"
---
# Letta
**What:** Stateful agents with long-term memory (ex-MemGPT).
**Why:** Building blocks for your own agents.
**Category:** Agent frameworks · **Stack layer:** harness
## Status
Catalog entry. Existence and repo metadata checked 2026-10-15 via the GitHub API. Install commands below are auto-extracted from the README and have NOT been executed or verified. Read the README before running anything; prefer a sandbox or venv.
## Install (unverified)
1. [any] source: README (auto-extracted); status: unverified, not executed
```bash
npm install -g @letta-ai/letta-code
```
## Verify
No verified check yet. Minimum: the install command exits 0 and the tool's own help/version flag runs (exact flag: see README).
## Rollback (unverified)
1. source: derived inverse of install command
```bash
npm uninstall -g @letta-ai/letta-code
```
## Links
- Homepage: https://docs.letta.com/
- Repo: https://github.com/letta-ai/letta
- README: https://github.com/letta-ai/letta#readme