Letta

Letta Cloud API

REST API for managing stateful agents, memory blocks (in-context + archival/RAG), custom tools (sandbox, client-side, MCP), sources, runs, and streaming responses. Bearer token auth on Letta Cloud.

GitHub

Documentation

📖
Documentation
https://docs.letta.com/

Other Resources

🔗
SignUp
https://app.letta.com/
🔗
Pricing
https://docs.letta.com/guides/api/plans
🔗
GitHub
https://github.com/letta-ai/letta
🔗
LLMsTxt
https://docs.letta.com/llms-full.txt

API entry from apis.yml

apis.yml Raw ↑ 
aid: letta:cloud
name: Letta Cloud API
description: REST API for managing stateful agents, memory blocks (in-context + archival/RAG), custom
  tools (sandbox, client-side, MCP), sources, runs, and streaming responses. Bearer token auth on Letta
  Cloud.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
humanURL: https://docs.letta.com/
baseURL: https://api.letta.com
tags:
- Agents
- Memory
- Tools
- Streaming
- RAG
properties:
- type: Documentation
  url: https://docs.letta.com/
- type: SignUp
  url: https://app.letta.com/
- type: Pricing
  url: https://docs.letta.com/guides/api/plans
- type: GitHub
  url: https://github.com/letta-ai/letta
- type: LLMsTxt
  url: https://docs.letta.com/llms-full.txt