---
title: "Add Project Collaborator"
method: POST
path: "/v1/projects/{project_id}/collaborators"
tags: ["collaborators"]
---

# Add Project Collaborator

`POST /v1/projects/{project_id}/collaborators`

## Path parameters

- `project_id` string, uuid, required

## Request body

- CollaboratorAdd
  - `user_id` string, required
  - `role` 'viewer' | 'editor' | 'admin'

## Response `201`

Successful Response

- CollaboratorOut
  - `user_id` string, required
  - `role` string, required
  - `added_by` string, nullable, required
  - `created_at` string, date-time, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/ontora/apis/ontora-api.md) · [All operations](https://skmtc.dev/ontora/apis/ontora-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ontora/ontora-api/revisions/7f57037fd94b/schema)