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

# Change a member's role

> Changes the current role while protecting the last active administrator. A role change revokes that human's MCP grants.

A signed-in human administrator is required. API keys and MCP credentials cannot replace that session. Sensitive operations can also require recent authentication.

Changes the current role while protecting the last active administrator. A role change revokes that human's MCP grants.

[Request conventions](https://www.mill.fyi/api-reference/overview.md) · [API keys](https://www.mill.fyi/api-keys.md) · [MCP connections](https://www.mill.fyi/mcp-connections.md)


## OpenAPI

````yaml api-reference/openapi.json PATCH /api/auth/members/{id}
openapi: 3.1.0
info:
  title: Mill HTTP API
  version: 1.0.6
  description: >-
    All registered task-board, account, OAuth, MCP transport and health
    operations. MCP tool schemas come from runtime validators; account
    operations follow their server handlers. Example data is fictional.
    Generation imports routes without issuing requests or connecting to a
    database.
servers:
  - url: https://mill-api.example.com
security: []
paths:
  /api/auth/members/{id}:
    patch:
      tags:
        - Members and invitations
      summary: Change a member's role
      description: >-
        Changes the current role while protecting the last active administrator.
        A role change revokes that human's MCP grants.


        A signed-in human administrator is required. API keys and MCP
        credentials cannot replace that session. Sensitive operations can also
        require recent authentication.
      operationId: patch_api_auth_members_by_id
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: >-
            The id from the corresponding list, record or authorization
            response.
        - name: Origin
          in: header
          required: true
          schema:
            type: string
            format: uri
          description: >-
            The exact configured Mill UI origin. Required for browser mutations
            carrying session cookies.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                role:
                  type: string
                  enum:
                    - admin
                    - member
                    - viewer
              required:
                - role
              additionalProperties: false
      responses:
        '200':
          description: >-
            Successful response. Examples are illustrative; field values vary by
            record.
          content:
            application/json:
              schema:
                type: object
                properties:
                  member:
                    type: object
                    properties:
                      id:
                        type: string
                      name:
                        type: string
                      email:
                        type: string
                      role:
                        type: string
                      timeZone:
                        type: string
                      passkeyEnabled:
                        type: boolean
                    additionalProperties: true
                additionalProperties: true
                description: >-
                  Illustrative response shape. Fields can be absent in alternate
                  successful flows; see the operation description and example.
              example:
                member:
                  id: 66666666-6666-4666-8666-666666666666
                  name: Alex Morgan
                  email: alex@example.test
                  role: member
                  timeZone: UTC
                  passkeyEnabled: false
        default:
          description: >-
            Request failure. Inspect code, message and requestId; respect
            Retry-After on HTTP 429.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - sessionCookie: []
components:
  schemas:
    Error:
      type: object
      required:
        - error
      properties:
        error:
          type: object
          required:
            - code
            - message
            - requestId
          properties:
            code:
              type: string
            message:
              type: string
            requestId:
              type: string
  securitySchemes:
    sessionCookie:
      type: apiKey
      in: cookie
      name: mill_session
      description: >-
        Signed-in human browser session; mutation requests also need the exact
        UI Origin

````

This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.