> ## 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 brand's guidelines, in a portal > The rules of one of the portal's brands, read-only, behind the same door as the portal (see GET /api/v1/portal/{slug}). A rule's assets are listed only when they may be used, and load from /a/{id} with the signature in `signed`; images in a rule's text come signed. No key needed. ## OpenAPI ````yaml /openapi.json get /api/v1/portal/{slug}/brands/{brand} 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 `: 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: /api/v1/portal/{slug}/brands/{brand}: parameters: - name: slug in: path required: true description: The portal's address schema: type: string - name: brand in: path required: true description: One of its brands, by slug schema: type: string get: summary: A brand's guidelines, in a portal description: >- The rules of one of the portal's brands, read-only, behind the same door as the portal (see GET /api/v1/portal/{slug}). A rule's assets are listed only when they may be used, and load from /a/{id} with the signature in `signed`; images in a rule's text come signed. No key needed. parameters: - name: context in: query schema: type: string description: Resolve for one context, e.g. dark-background responses: '200': description: The guidelines content: application/json: schema: type: object properties: brand: type: object properties: slug: type: string name: type: string required: - slug - name additionalProperties: false data: type: array items: type: object properties: id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ brand: type: string description: The brand's slug key: type: string description: Dotted, e.g. color.primary context: description: 'null: the default' type: - string - 'null' type: type: string enum: - color - text - number - list - font value: anyOf: - type: string - type: number - type: array items: type: - string - number - type: object properties: family: type: string minLength: 1 maxLength: 120 size: description: Pixels type: number exclusiveMinimum: 0 maximum: 1000 weight: description: 400 regular, 700 bold type: integer minimum: 1 maximum: 1000 required: - family additionalProperties: false usage: type: - string - 'null' assets: type: array items: type: object properties: id: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ rendition: type: - string - 'null' title: type: - string - 'null' filename: type: string mime: type: string width: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' height: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' required: - id - rendition - title - filename - mime - width - height additionalProperties: false description: >- Assets it points at, in order: /a/{id}, or /a/{id}/{rendition} when it names one updatedAt: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d(?:\.\d+)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ required: - id - brand - key - context - type - value - usage - assets - updatedAt additionalProperties: false description: >- Its rules in page order; a rule's assets only when they may be used contexts: type: array items: type: string description: Contexts some rule is scoped to, for ?context= signed: type: object propertyNames: type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ additionalProperties: type: string description: >- Each listed asset's signature: /a/{id}/{rendition}?s={it} loads it for the visitor required: - brand - data - contexts - signed additionalProperties: false '401': description: 'Not in yet: how to get in' content: application/json: schema: type: object properties: error: type: object properties: code: type: string const: password message: type: string detail: type: object properties: name: type: string access: type: string enum: - password - members theme: type: object properties: logo: description: >- A URL on this host: the portal's, else its organization's type: - string - 'null' accent: description: The portal's, else its organization's type: - string - 'null' background: type: - string - 'null' icon: description: The organization's, for the browser tab type: - string - 'null' product: type: string description: What the organization calls the product required: - logo - accent - background - icon - product additionalProperties: false required: - name - access - theme additionalProperties: false required: - code - message - detail additionalProperties: false required: - error additionalProperties: false 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 ````