# Assign payment method

> Management API · Projects

```http
POST https://app.mk.io/api/v1/projects/{project_name}/paymentMethod
```

Replace the payment method for this project and activate the project if it is not already active. It is not possible to remove the payment method from a project.

RBAC Capability Required: `core.subscription.create`

## Authentication

- `Authorization` header — Bearer authentication of the form `Bearer <token>`.

## Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `project_name` | string | Yes | — |

## Request body

Content type: `application/json`

- `paymentMethodId` · string · **Required** · _format: uuid_ — Payment Method identity

## Example request

```bash
curl -X POST "https://app.mk.io/api/v1/projects/{project_name}/paymentMethod" \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
  "paymentMethodId": "00000000-0000-0000-0000-000000000000"
}'
```

## Responses

### 200 — The payment method was updated

No response body.

### 400 — Bad Request

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

### 401 — Unauthorized

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

### 403 — Forbidden

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

### 404 — Not Found

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

### 429 — Too Many Requests

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

### 500 — Internal Server Error

- `error` · object · **Required** — Pertinent information about the error
  - `code` · string · **Required** — The error code.
  - `detail` · string · **Required** — The error message.
  - `extraDetail` · map from strings to any · Optional — Extra information regarding this error.
    - `[any key]` · any — map of additional properties
- `ref` · string · **Required** — A reference to the request that caused the error.
- `status` · integer · **Required** — The HTTP status code

Example:

```json
{
  "error": {
    "code": "string",
    "detail": "string",
    "extraDetail": {
      "key": null
    }
  },
  "ref": "string",
  "status": 0
}
```

---

Source spec: `management-api` · operationId: `[post]_/api/v1/projects/{project_name}/paymentMethod`