<p>Retrieves the specified managed rule set. </p> <note> <p>This is intended for use only by vendors of managed rule sets. Vendors are Amazon Web Services and Amazon Web Services Marketplace sellers. </p> <p>Vendors, you can use the managed rule set APIs to provide controlled rollout of your versioned managed rule group offerings for your customers. The APIs are <code>ListManagedRuleSets</code>, <code>GetManagedRuleSet</code>, <code>PutManagedRuleSetVersions</code>, and <code>UpdateManagedRuleSetVersionExpiryDate</code>.</p> </note>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}