openapi: 3.1.0
info:
  title: Letta Admin 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: Admin
  description: Administrative operations (org / billing / policy).
paths:
  /v1/tags/:
    get:
      tags:
      - Admin
      summary: List Tags
      description: Get the list of all tags (from agents and blocks) that have been created.
      operationId: list_tags
      parameters:
      - name: before
        in: query
        required: false
        schema:
          anyOf:
          - type: string
          - type: 'null'
          description: Tag cursor for pagination. Returns tags that come before this tag in the specified sort order
          title: Before
        description: Tag cursor for pagination. Returns tags that come before this tag in the specified sort order
      - name: after
        in: query
        required: false
        schema:
          anyOf:
          - type: string
          - type: 'null'
          description: Tag cursor for pagination. Returns tags that come after this tag in the specified sort order
          title: After
        description: Tag cursor for pagination. Returns tags that come after this tag in the specified sort order
      - name: limit
        in: query
        required: false
        schema:
          anyOf:
          - type: integer
          - type: 'null'
          description: Maximum number of tags to return
          default: 50
          title: Limit
        description: Maximum number of tags to return
      - name: order
        in: query
        required: false
        schema:
          enum:
          - asc
          - desc
          type: string
          description: Sort order for tags. 'asc' for alphabetical order, 'desc' for reverse alphabetical order
          default: asc
          title: Order
        description: Sort order for tags. 'asc' for alphabetical order, 'desc' for reverse alphabetical order
      - name: order_by
        in: query
        required: false
        schema:
          const: name
          type: string
          description: Field to sort by
          default: name
          title: Order By
        description: Field to sort by
      - name: query_text
        in: query
        required: false
        schema:
          anyOf:
          - type: string
          - type: 'null'
          description: Filter tags by text search. Deprecated, please use name field instead
          deprecated: true
          title: Query Text
        description: Filter tags by text search. Deprecated, please use name field instead
        deprecated: true
      - name: name
        in: query
        required: false
        schema:
          anyOf:
          - type: string
          - type: 'null'
          description: Filter tags by name
          title: Name
        description: Filter tags by name
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: array
                items:
                  type: string
                title: Response List Tags
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer