Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors See Also

GetWebFunction

Retrieves details about a web function, including its current state and configuration.

Request Syntax


GET /2025-03-07/web-functions/functionName HTTP/1.1

URI Request Parameters

The request uses the following URI parameters.

functionName

The web function to retrieve.

You can specify either of the following:

The function name, for example my-function.
The function ARN.

The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.

Length Constraints: Minimum length of 1. Maximum length of 256.

Required: Yes

Request Body

The request does not have a request body.

Response Syntax


HTTP/1.1 200
Content-type: application/json

{
   "createdAt": "string",
   "functionArn": "string",
   "functionName": "string",
   "state": "string",
   "stateReason": "string",
   "updatedAt": "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.

createdAt

The date and time the web function was created.

Type: Timestamp

functionArn

The Amazon Resource Name (ARN) of the web function.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

functionName

The name of the web function.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

state

The current state of the web function.

Type: String

Valid Values: Pending | Active | Failed | Deleting

stateReason

The reason for the current state of the web function.

Type: String

updatedAt

The date and time the web function was last updated.

Type: Timestamp

Errors

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

AccessDeniedException

You don't have permission to perform this operation. Check the IAM policies for your identity and any resource-based policy on the web function.

message: A message describing the access denied error.

HTTP Status Code: 403

InternalServerException

The request failed because of an internal error in the service. Retry the request. If the error persists, open a support case.

message: A message describing the internal error.

HTTP Status Code: 500

ResourceNotFoundException

The specified web function, revision, endpoint, or resource-based policy doesn't exist. Verify the resource identifier and try again.

message: A message describing the resource not found error.
resourceId: The identifier of the resource that was not found.
resourceType: The type of the resource that was not found.

HTTP Status Code: 404

ThrottlingException

The request was denied because it exceeded the request rate that Lambda allows for your account. Reduce the frequency of requests and retry with exponential backoff.

message: A message describing the throttling error.
quotaCode: The quota code that was exceeded, if applicable.
retryAfterSeconds: The number of seconds to wait before retrying the request.
serviceCode: The service code of the throttled service.

HTTP Status Code: 429

ValidationException

The request failed validation because a parameter was missing, malformed, or outside the allowed range. Check the request parameters and try again.

message: A message describing the validation error.

HTTP Status Code: 400