# Update a project member's role

**PATCH /api/v1/projects/{id}/members/{userId}**

Changes the project role for an active member identified by hex user _id.


## Servers
- https://agentengine.mongodb.com: https://agentengine.mongodb.com ()


## Authentication methods
- Bearer auth


## Parameters

### Path parameters

- **id** (string)
  Project ID (hex ObjectID)

- **userId** (string)
  User ID (hex ObjectID)



### Body: application/json (object)
New role
- **role** (string)
  New project-level role



## Responses
### 406
Unsupported or malformed API version, an operation unavailable in the selected published contract, or an unacceptable representation (including unsupported media-type parameters or excluded SSE). Existing authentication, authorization, and rate-limit failures take precedence.

#### Body: application/json (object)
- **badRequestDetail** (object)
  Optional validation details defined by the standard error schema; API negotiation errors do not emit this field.

- **detail** (string)
  Human-readable error details.

- **error** (integer)
  HTTP status code.

- **errorCode** (string)
  Machine-readable error code.

- **parameters** (array[string])
  Request parameter names associated with the error; omitted when none apply.

- **reason** (string)
  HTTP status reason phrase.


### 200
OK

#### Body: application/json (object)
- **created_at** (string)

- **email** (string)
  Resolved for display only.

- **name** (string)
  Display name; empty when the user record has none.

- **org_id** (string)
  The project's parent org (hex).

- **roles** (array[object])
  Effective project roles (direct + inherited).

- **updated_at** (string)

- **user_id** (string)
  Stable user _id (hex).


### 400
Bad Request

#### Body: application/json (object)
- **code** (string)

- **error** (string)

- **success** (boolean)


### 404
Not Found

#### Body: application/json (object)
- **code** (string)

- **error** (string)

- **success** (boolean)


### 500
Internal Server Error

#### Body: application/json (object)
- **code** (string)

- **error** (string)

- **success** (boolean)



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