> ## Documentation Index
> Fetch the complete documentation index at: https://docs.artbucket.io/llms.txt
> Use this file to discover all available pages before exploring further.

# A verified domain's brand.json

> On an organization's verified domain, where AdCP's agents look: an Authoritative Location Redirect to its brand's brand.json on BrandHub. Its public brands (on a portal's domain, those the portal shows): the one whose domain the host proves, else the only one, else the default one; with several and none of those, a House Portfolio of them, inline. 404 on any other host, or with nothing public.

No key needed.



## OpenAPI

````yaml /openapi.json get /.well-known/brand.json
openapi: 3.1.0
info:
  title: artbucket
  version: '1'
  description: >-
    Agent-first asset management. The web UI is built on this API and nothing
    else, beside signing in at /api/auth. Send `Authorization: Bearer <key>`: a
    key works in one workspace with one scope, and scopes are a ladder: read <
    propose < write < admin. People signed in to the app carry a session cookie
    instead, and their scope is what their grants add up to: on the
    organization, the workspace, or single collections and assets. A scope shown
    as needed on the workspace is also enough on the one collection or asset a
    route acts on. Agents (MCP at POST /api/v1/mcp) usually get `propose`: what
    they add waits for a human.
servers:
  - url: http://localhost:3000
security:
  - bearer: []
  - session: []
  - {}
paths:
  /.well-known/brand.json:
    get:
      summary: A verified domain's brand.json
      description: >-
        On an organization's verified domain, where AdCP's agents look: an
        Authoritative Location Redirect to its brand's brand.json on BrandHub.
        Its public brands (on a portal's domain, those the portal shows): the
        one whose domain the host proves, else the only one, else the default
        one; with several and none of those, a House Portfolio of them, inline.
        404 on any other host, or with nothing public.


        No key needed.
      responses:
        '200':
          description: An AdCP brand.json
          content:
            application/json:
              schema:
                type: object
                propertyNames:
                  type: string
                additionalProperties: {}
        default:
          description: An error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                      message:
                        type: string
                      detail: {}
                    required:
                      - code
                      - message
                    additionalProperties: false
                required:
                  - error
                additionalProperties: false
      security: []
components:
  securitySchemes:
    bearer:
      type: http
      scheme: bearer
      description: 'An API key: ab_...'
    session:
      type: apiKey
      in: cookie
      name: better-auth.session_token
      description: Signed in, at /api/auth

````