> ## 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. # Add and remove members > People of the organization only. Joining a group whose grants make an editor takes a seat. Any caller; the scope needed is checked on what it acts on. ## OpenAPI ````yaml /openapi.json post /api/v1/groups/{id}/members 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 project 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 project, or single collections and assets. A scope shown as needed on the project 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/groups/{id}/members: parameters: - name: id in: path required: true description: Group id schema: type: string post: summary: Add and remove members description: >- People of the organization only. Joining a group whose grants make an editor takes a seat. Any caller; the scope needed is checked on what it acts on. requestBody: required: true content: application/json: schema: type: object properties: add: description: Members' user ids, from /api/v1/members maxItems: 200 type: array items: type: string minLength: 1 maxLength: 64 remove: maxItems: 200 type: array items: type: string minLength: 1 maxLength: 64 additionalProperties: false responses: '200': description: The group content: application/json: schema: type: object properties: data: 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)$ name: type: string source: type: string enum: - manual - sso description: Made by an admin, or synced from single sign-on createdAt: 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)))$ members: type: array items: type: object properties: id: type: string name: type: string email: type: string required: - id - name - email additionalProperties: false grants: 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)$ resource: type: string enum: - organization - project - collection - asset - brand resourceId: 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)$ projectId: anyOf: - 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)$ - type: 'null' label: description: The name of what it is on type: - string - 'null' scope: type: string enum: - read - propose - write - admin createdAt: 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 - resource - resourceId - projectId - label - scope - createdAt additionalProperties: false required: - id - name - source - createdAt - members - grants additionalProperties: false required: - data 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 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 ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.