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

# Revoke a collaborator's access to a Model API

> Remove a user or organization collaborator. You cannot remove the last Owner.
Public vs private visibility is not managed here. Only current Owners can remove
collaborators.

Related:
- GET /api/modelServing/beta/modelApis/{modelApiId}/collaborators (confirm who remains)
- POST /api/modelServing/beta/modelApis/{modelApiId}/collaborators (grant access again)
- PUT /api/modelServing/beta/modelApis/{modelApiId}/collaborators/{collaboratorId} (demote instead of remove)




## OpenAPI

````yaml /api-specs/cloud/public-api.json delete /api/modelServing/beta/modelApis/{modelApiId}/collaborators/{collaboratorId}
openapi: 3.0.3
info:
  title: Domino Public API
  description: Reference for Domino's public REST API endpoints.
  version: 6.4.0
  x-catalog-key: nucleus
servers:
  - url: https://mycluster.domino.tech
    description: >-
      Replace 'mycluster.domino.tech' with your Domino cluster hostname. For
      Domino Cloud customers, that is `your-subdomain`.domino.tech (e.g.,
      acme.domino.tech). For self-hosted deployments, it is the hostname you
      reach the Domino UI at.
security: []
tags:
  - name: Projects
  - name: Project templates
  - name: Workspaces
  - name: Jobs
  - name: HPC Jobs
  - name: Environments
  - name: Hardware Tiers
  - name: Datasets
  - name: Data Sources
  - name: GenAI
  - name: AI Systems
  - name: Apps
  - name: App versions
  - name: App instances
  - name: Model APIs
  - name: Registered models
  - name: Model deployment
  - name: Extensions
  - name: Cost and billing
  - name: Users and organizations
  - name: Service accounts
  - name: Personal Access Tokens
  - name: Personal Access Tokens (admin)
  - name: Audit Trail
  - name: Custom metrics
  - name: PPM
  - name: Model Monitoring models
  - name: Model Monitoring drift and quality
  - name: Model Monitoring settings
  - name: Model Monitoring authentication
  - name: Governance bundles
  - name: Governance policies
  - name: Governance evidence and results
  - name: Governance operations
  - name: NetApp Volumes
  - name: NetApp Volumes snapshots
  - name: NetApp Volumes filesystems
  - name: NetApp Volumes transfers
  - name: Tags
  - name: Properties
externalDocs:
  description: OpenAPI
  url: https://swagger.io/resources/open-api/
paths:
  /api/modelServing/beta/modelApis/{modelApiId}/collaborators/{collaboratorId}:
    delete:
      tags:
        - Model APIs
      summary: Revoke a collaborator's access to a Model API
      description: >
        Remove a user or organization collaborator. You cannot remove the last
        Owner.

        Public vs private visibility is not managed here. Only current Owners
        can remove

        collaborators.


        Related:

        - GET /api/modelServing/beta/modelApis/{modelApiId}/collaborators
        (confirm who remains)

        - POST /api/modelServing/beta/modelApis/{modelApiId}/collaborators
        (grant access again)

        - PUT
        /api/modelServing/beta/modelApis/{modelApiId}/collaborators/{collaboratorId}
        (demote instead of remove)
      operationId: removeModelApiCollaborator
      parameters:
        - description: >
            Model API id (24-character hex). Obtain from GET
            /api/modelServing/v1/modelApis

            or the Model API details URL.
          in: path
          name: modelApiId
          required: true
          schema:
            type: string
        - description: |
            Domino user or organization id (24-character hex). Copy `id` from
            GET /api/modelServing/beta/modelApis/{modelApiId}/collaborators.
          in: path
          name: collaboratorId
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Successfully removed the collaborator.
        '400':
          description: >
            collaboratorId is not a 24-character hex id, or removal would leave
            the Model

            API with no Owner. Keep at least one Owner, or transfer ownership
            before

            removing this collaborator.
        '401':
          description: >-
            Authentication required. Provide a valid Domino session or API
            token.
        '403':
          description: >
            You cannot manage collaborators on this Model API. Ask an Owner to
            remove the

            collaborator, or retry as an Owner.
        '404':
          description: >
            No Model API exists for modelApiId, or this id is not currently
            assigned.

            Confirm with GET
            /api/modelServing/beta/modelApis/{modelApiId}/collaborators.
      security:
        - DominoApiKey: []
        - BearerAuthentication: []
components:
  securitySchemes:
    DominoApiKey:
      type: apiKey
      in: header
      name: X-Domino-Api-Key
    BearerAuthentication:
      type: apiKey
      name: Authorization
      in: header

````

## Related topics

- [See who can access a Model API](/api-reference/model-apis/see-who-can-access-a-model-api.md)
- [Grant a user or organization Model API access](/api-reference/model-apis/grant-a-user-or-organization-model-api-access.md)
- [Sharing and access](/cloud/platform-capabilities/features/collaboration/sharing-and-access.md)
- [Domino endpoint security](/cloud/platform-capabilities/features/model-deployment/security.md)