Letta

Letta Device Storage API

Per-device storage for the Letta Code SDK and ADE.

Documentation GitHub OpenAPI

Documentation

https://docs.letta.com/

Specifications

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/openapi/letta-device-storage-api-openapi.yml

Schemas & Data

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-agent-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-block-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-tool-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-source-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-run-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-group-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-identity-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-message-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-passage-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-archive-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-job-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-llm-config-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-embedding-config-schema.json

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/json-schema/letta-provider-schema.json

Other Resources

https://app.letta.com/

https://docs.letta.com/guides/api/plans

https://github.com/letta-ai/letta

https://docs.letta.com/llms-full.txt

https://www.letta.com/blog

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/openapi/letta-openapi.yml

SpectralRuleset

https://raw.githubusercontent.com/api-evangelist/letta/refs/heads/main/rules/letta-rules.yml

https://github.com/letta-ai/letta/blob/main/LICENSE

https://github.com/letta-ai/letta/blob/main/Dockerfile

AgentFileFormat

https://github.com/letta-ai/agent-file

OpenAPI Specification

openapi: 3.1.0
info:
  title: Letta Admin Device Storage API
  version: 1.0.0
  description: REST API for Letta, the stateful agents platform. Manage agents, memory blocks, archival passages, sources, custom tools, MCP servers, multi-agent groups, runs, and streaming responses. Available as Letta Cloud (managed) at https://api.letta.com/v1 and as the self-hosted open-source server (Apache-2.0) typically run at http://localhost:8283.
  contact:
    name: Letta
    url: https://www.letta.com/
    email: support@letta.com
  license:
    name: Apache-2.0
    url: https://github.com/letta-ai/letta/blob/main/LICENSE
  x-logo:
    url: https://www.letta.com/favicon.ico
servers:
- url: https://api.letta.com
  description: Letta Cloud (managed)
- url: https://app.letta.com
  description: Letta Cloud (app)
- url: http://localhost:8283
  description: Self-hosted Letta server
security:
- bearerAuth: []
tags:
- name: Device Storage
  description: Per-device storage for the Letta Code SDK and ADE.
paths:
  /v1/device-storage-key:
    get:
      description: Returns an HMAC-derived AES-256-GCM key scoped to the authenticated user and device. Used to encrypt/decrypt local IndexedDB caches on the client.
      summary: Get Device Storage Key
      tags:
      - Device Storage
      parameters:
      - name: deviceId
        in: query
        required: true
        schema:
          type: string
      operationId: deviceStorage.getDeviceStorageKey
      responses:
        '200':
          description: '200'
          content:
            application/json:
              schema:
                type: object
                properties:
                  key:
                    type: string
                required:
                - key
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer