openapi: 3.0.3
info:
  title: Synapse Admin Federation API
  description: Administrative REST API for the Synapse Matrix homeserver. Provides server administrators with endpoints to manage users, rooms, media, federation, registration tokens, background updates, event reports, and server statistics. Authentication requires an access token belonging to a server admin account, passed as a Bearer token. Admin API endpoints should be protected behind a reverse proxy.
  version: '1.0'
  contact:
    name: Element (Synapse maintainers)
    url: https://github.com/element-hq/synapse
  license:
    name: AGPL-3.0
    url: https://github.com/element-hq/synapse/blob/develop/LICENSE
servers:
- url: https://matrix.example.com/_synapse/admin
  description: Synapse Admin API base URL
security:
- BearerAuth: []
tags:
- name: Federation
  description: Federation management
paths:
  /v1/federation/destinations:
    get:
      summary: List Federation Destinations
      description: List all remote homeservers that this server has federated with
      operationId: listFederationDestinations
      tags:
      - Federation
      parameters:
      - name: limit
        in: query
        schema:
          type: integer
      - name: from
        in: query
        schema:
          type: integer
      - name: destination
        in: query
        schema:
          type: string
      responses:
        '200':
          description: List of federation destinations
          content:
            application/json:
              schema:
                type: object
                properties:
                  destinations:
                    type: array
                    items:
                      type: object
                  next_token:
                    type: string
                  total:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
components:
  responses:
    Unauthorized:
      description: Unauthorized - missing or invalid access token
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Forbidden:
      description: Forbidden - requires server admin access
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      properties:
        errcode:
          type: string
          description: Matrix error code (e.g. M_FORBIDDEN, M_NOT_FOUND)
        error:
          type: string
          description: Human-readable error description
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Admin access token obtained from the Synapse homeserver