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OpenAPI Specification

openapi: 3.2.0
info:
  title: AT Protocol Core API (com.atproto) Sync API
  description: The core AT Protocol XRPC API covering server identity, repository management, account administration, moderation/labeling, and data synchronization. Endpoints are accessed via HTTP GET (queries) and POST (procedures) at /xrpc/{NSID} on any PDS host or the Bluesky-hosted services at bsky.social and bsky.network. Schemas are defined using Lexicon, AT Protocol's schema definition language.
  version: 1.0.0
  contact:
    name: AT Protocol
    url: https://atproto.com/
  license:
    name: MIT / Apache-2.0
    url: https://github.com/bluesky-social/atproto/blob/main/LICENSE.txt
servers:
- url: https://bsky.social/xrpc
  description: Bluesky PDS (Personal Data Server)
- url: https://bsky.network/xrpc
  description: Bluesky Relay / BGS
- url: https://{pds_host}/xrpc
  description: Self-hosted PDS
  variables:
    pds_host:
      default: bsky.social
      description: Hostname of the Personal Data Server
security:
- bearerAuth: []
- {}
tags:
- name: sync
  description: Data synchronization, firehose, blob access
paths:
  /com.atproto.sync.getRepo:
    get:
      operationId: com_atproto_sync_getRepo
      summary: Get Repo
      description: Download a repository export as CAR file. Optionally only a subset of commits. Does not require auth; implemented by PDS.
      tags:
      - sync
      security:
      - {}
      parameters:
      - name: did
        in: query
        required: true
        description: The DID of the repo.
        schema:
          type: string
      - name: since
        in: query
        required: false
        description: The revision (''rev'') of the repo to create a diff from.
        schema:
          type: string
      responses:
        '200':
          description: CAR file binary
          content:
            application/vnd.ipld.car:
              schema:
                type: string
                format: binary
        '400':
          $ref: '#/components/responses/BadRequest'
  /com.atproto.sync.getBlob:
    get:
      operationId: com_atproto_sync_getBlob
      summary: Get Blob
      description: Get a blob associated with a given account. Does not require auth.
      tags:
      - sync
      security:
      - {}
      parameters:
      - name: did
        in: query
        required: true
        description: The DID of the account.
        schema:
          type: string
      - name: cid
        in: query
        required: true
        description: The CID of the blob to fetch.
        schema:
          type: string
      responses:
        '200':
          description: Blob data
          content:
            '*/*':
              schema:
                type: string
                format: binary
        '400':
          $ref: '#/components/responses/BadRequest'
  /com.atproto.sync.listRepos:
    get:
      operationId: com_atproto_sync_listRepos
      summary: List Repos
      description: Enumerates all the DID, rev, and CID triples for all repos hosted by this service.
      tags:
      - sync
      security:
      - {}
      parameters:
      - name: limit
        in: query
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 1000
          default: 500
      - name: cursor
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: List of repos
          content:
            application/json:
              schema:
                type: object
                required:
                - repos
                properties:
                  cursor:
                    type: string
                  repos:
                    type: array
                    items:
                      $ref: '#/components/schemas/RepoRef'
        '400':
          $ref: '#/components/responses/BadRequest'
components:
  schemas:
    RepoRef:
      type: object
      required:
      - did
      - head
      - rev
      properties:
        did:
          type: string
        head:
          type: string
        rev:
          type: string
        active:
          type: boolean
        status:
          type: string
    Error:
      type: object
      required:
      - error
      - message
      properties:
        error:
          type: string
          description: Error name/code
        message:
          type: string
          description: Human-readable error message
  responses:
    BadRequest:
      description: Bad request or validation error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: Access JWT obtained from createSession or refreshSession
    refreshAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: Refresh JWT obtained from createSession
externalDocs:
  description: AT Protocol XRPC Specification
  url: https://atproto.com/specs/xrpc