Invoke a Lambda function.

Invocations may be synchronous or asynchronous. In a synchronous invocation, Lambda waits for a response that contains details or errors. In an asynchronous invocation, Lambda adds an event to a queue. After the event is sent, the response includes a status code only.


  • Your Functions(dropdown): list of functions that you can invoke



  • invocationType(drop-down)

    • RequestResponse: Synchronous invocation. The connection remains open until a response is received.

    • DryRun: Verification of user permissions. Try this before invoking a function to prevent errors.

    • Event: Asynchronous invocation. Events are added to a queue and attempted twice before moving to dead-letter queue.

  • logType(drop-down)

    • None: exclude execution log from the response

    • Tail: include execution log in response

  • clientContext(object): data about the client (limit: 3583 bytes of base64-encoded data)

  • payload(object): JSON data to provide to the function

  • qualifier(text): alias of the function (if it has published previously)



  • Status Code(number): HTTP code for the request. Successful requests are in the 200 range; errors are in the 400-500 range.

  • Output(text): response from the function

  • Log Result(text): the last 4KB of the execution log

See also