# Change OAuth2 token URL

Use a custom decorator to change the OAuth2 credentials flow token URL.

Estimated time: 15 minutes

## Step-by-step instructions

1. Add this code to your repo with the API (the Redocly configuration file is an example).

```yaml
extends:
  - recommended
plugins:
  - './acme-plugin.js'
decorators:
  plugin/change-token-url:
    tokenUrl: 'https://token.example.com/url'
```

```js
const ChangeTokenUrl = require('./decorators/change-token-url');
const id = 'plugin';

/** @type {import('@redocly/cli').CustomRulesConfig} */
const decorators = {
  oas3: {
    'change-token-url': ChangeTokenUrl,
  },
};

module.exports = function changeTokenPlugin() {
  return {
    id,
    decorators,
  };
};
```

```js
module.exports = ChangeTokenUrl;

/** @type {import('@redocly/cli').OasDecorator} */
function ChangeTokenUrl({ tokenUrl }) {
  return {
    OAuth2Flows: {
      leave(flows, ctx) {
        if (tokenUrl) {
          flows.clientCredentials.tokenUrl = tokenUrl;
        }
      },
    },
  };
}
```