StartResourceEvaluation - AWS Config


Runs an on-demand evaluation for the specified resource to determine whether the resource details will comply with configured AWS Config rules. You can also use it for evaluation purposes. AWS Config recommends using an evaluation context. It runs an execution against the resource details with all of the AWS Config rules in your account that match with the specified proactive mode and resource type.


Ensure you have the cloudformation:DescribeType role setup to validate the resource type schema.

You can find the Resource type schema in " AWS public extensions" within the AWS CloudFormation registry or with the following CLI commmand: aws cloudformation describe-type --type-name "AWS::S3::Bucket" --type RESOURCE.

For more information, see Managing extensions through the AWS CloudFormation registry and AWS resource and property types reference in the AWS CloudFormation User Guide.

Request Syntax

{ "ClientToken": "string", "EvaluationContext": { "EvaluationContextIdentifier": "string" }, "EvaluationMode": "string", "EvaluationTimeout": number, "ResourceDetails": { "ResourceConfiguration": "string", "ResourceConfigurationSchemaType": "string", "ResourceId": "string", "ResourceType": "string" } }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


A client token is a unique, case-sensitive string of up to 64 ASCII characters. To make an idempotent API request using one of these actions, specify a client token in the request.


Avoid reusing the same client token for other API requests. If you retry a request that completed successfully using the same client token and the same parameters, the retry succeeds without performing any further actions. If you retry a successful request using the same client token, but one or more of the parameters are different, other than the Region or Availability Zone, the retry fails with an IdempotentParameterMismatch error.

Type: String

Length Constraints: Minimum length of 64. Maximum length of 256.

Required: No


Returns an EvaluationContext object.

Type: EvaluationContext object

Required: No


The mode of an evaluation. The valid values for this API are DETECTIVE and PROACTIVE.

Type: String


Required: Yes


The timeout for an evaluation. The default is 900 seconds. You cannot specify a number greater than 3600. If you specify 0, AWS Config uses the default.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 3600.

Required: No


Returns a ResourceDetails object.

Type: ResourceDetails object

Required: Yes

Response Syntax

{ "ResourceEvaluationId": "string" }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


A unique ResourceEvaluationId that is associated with a single execution.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.


For information about the errors that are common to all actions, see Common Errors.


Using the same client token with one or more different parameters. Specify a new client token with the parameter changes and try again.

HTTP Status Code: 400


One or more of the specified parameters are not valid. Verify that your parameters are valid and try again.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: