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[@salesforce/b2c-tooling-sdk](../../../modules.md) / [operations/mrt](../index.md) / listAccessControlHeaders

# Function: listAccessControlHeaders()

> **listAccessControlHeaders**(`options`, `auth`): `Promise`\<[`ListAccessControlHeadersResult`](../interfaces/ListAccessControlHeadersResult.md)\>

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/access-control.ts:102](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/e7c16f1ae423da0aa47b3e10be88f9770b53619b/packages/b2c-tooling-sdk/src/operations/mrt/access-control.ts#L102)

Lists access control headers for an MRT environment.

## Parameters

### options

[`ListAccessControlHeadersOptions`](../interfaces/ListAccessControlHeadersOptions.md)

List options

### auth

[`AuthStrategy`](../../../auth/interfaces/AuthStrategy.md)

Authentication strategy (ApiKeyStrategy)

## Returns

`Promise`\<[`ListAccessControlHeadersResult`](../interfaces/ListAccessControlHeadersResult.md)\>

Paginated list of headers

## Throws

Error if request fails

## Example

```typescript
import { ApiKeyStrategy } from '@salesforce/b2c-tooling-sdk/auth';
import { listAccessControlHeaders } from '@salesforce/b2c-tooling-sdk/operations/mrt';

const auth = new ApiKeyStrategy(process.env.MRT_API_KEY!, 'Authorization');

const result = await listAccessControlHeaders({
  projectSlug: 'my-storefront',
  targetSlug: 'production'
}, auth);

console.log(`Found ${result.count} access control headers`);
```