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

# Add Credentials to RLCL

> Adds credentials to an existing RLCL. Credentials added to the RLCL will be subject to the rate limiting rules defined in the RLCL.

## Endpoint

```
POST /apiops/projects/{projectName}/rlcl/{rlclName}/credentials/
```

## Authentication

Requires a Personal API Access Token.

### Header

```
Authorization: Bearer YOUR_TOKEN
```

## Request

### Headers

| Header        | Value            | Required |
| ------------- | ---------------- | -------- |
| Authorization | Bearer {token}   | Yes      |
| Content-Type  | application/json | Yes      |

### Path Parameters

| Parameter   | Type   | Required | Description  |
| ----------- | ------ | -------- | ------------ |
| projectName | string | Yes      | Project name |
| rlclName    | string | Yes      | RLCL name    |

### Request Body

#### Full JSON Body Example - Single Credential

```json theme={null}
{
  "credentialNameList": [
    "api-user"
  ]
}
```

#### Full JSON Body Example - Multiple Credentials

```json theme={null}
{
  "credentialNameList": [
    "api-user-1",
    "api-user-2",
    "premium-user"
  ]
}
```

#### Request Body Fields

| Field              | Type           | Required | Default | Description                                 |
| ------------------ | -------------- | -------- | ------- | ------------------------------------------- |
| credentialNameList | array\[string] | Yes      | -       | List of credential names (usernames) to add |

### Notes

* `credentialNameList` must not be empty
* Credential names must exist in the project
* Duplicate credentials are ignored (not added twice)
* Credentials are added to the existing list

## Response

### Success Response (200 OK)

```json theme={null}
{
  "success": true
}
```

### Error Response (400 Bad Request)

```json theme={null}
{
  "error": "bad_request",
  "error_description": "credentialNameList value can not be empty!"
}
```

or

```json theme={null}
{
  "error": "bad_request",
  "error_description": "Credential with name (api-user) is not found in project!"
}
```

## cURL Example

```bash theme={null}
curl -X POST \
  "https://demo.apinizer.com/apiops/projects/MyProject/rlcl/PremiumUserRLCL/credentials/" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "credentialNameList": [
      "api-user-1",
      "api-user-2"
    ]
  }'
```

## Permissions

* User must have **`IDENTITY` + `MANAGE`** permission in the project

## Notes and Warnings

* **Credential Names**:
  * Use credential usernames (not IDs)
  * Credentials must exist in the project
* **Duplicate Handling**:
  * Duplicate credentials are ignored
  * No error is thrown for duplicates
* **RLCL Must Exist**:
  * RLCL must exist before adding credentials

## Related Documentation

* [Update Credentials](/api-reference/rlcl/credentials/update-credentials) - Replace all credentials
* [Delete Credentials](/api-reference/rlcl/credentials/delete-credentials) - Remove credentials
* [Create RLCL](/api-reference/rlcl/crud/create-rlcl) - Create a new RLCL