ActionAWS LambdaUpdated September 2026
How do I call an AWS Lambda function?
Short answer: You can invoke lambda function in AWS Lambda by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the AWS Lambda Invoke Lambda Function action to a workflow, map its 4 inputs from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.
Inputs
The fields this action accepts.
Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.
| Field | Type | Required | Description |
|---|---|---|---|
Function Name or ARN function_name | string | Required | Lambda function name, partial ARN, or full ARN. Function must exist in the connected region. |
Event Payload payload | object | Optional | JSON event the function receives. Whatever your handler expects. |
Invocation Type invocation_type | options | Optional | – |
Version or Alias qualifier | string | Optional | Optional version number or alias. Defaults to $LATEST. |
Sample request
{"function_name": "my-function OR arn:aws:lambda:us-east-1:123456789012:function:my-function","payload": "{{trigger.payload}}","invocation_type": "{{trigger.invocation_type}}","qualifier": "$LATEST"}
Returns
{"body": "{ \"message\": \"Hello from Lambda\" }","statusCode": 200}
Use these fields in downstream nodes for routing, logging, or error handling.
Triggered by
Apps that pair well as the trigger for Invoke Lambda Function.
Any of these apps can fire this action as part of a workflow.
FAQ
Questions about Invoke Lambda Function.
What does the Invoke Lambda Function action do in AWS Lambda?
Synchronously or asynchronously invokes a Lambda with a JSON payload. Sync waits for the response (up to 15 min, Lambda's max); async returns immediately with an InvocationId for fire-and-forget patterns. The right escape hatch when the workflow needs Python/Node logic that doesn't fit cleanly into a Code step.
What inputs does Invoke Lambda Function require?
Required: Function Name or ARN. Every input accepts a static value or a variable from any upstream node in your workflow.
Can I use dynamic inputs from earlier workflow nodes?
Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.
What happens if AWS Lambda returns an error?
The run history shows the failed step with its input and the error message AWS Lambda returned, so you can fix the input and run the workflow again. Automatic retries are built into HTTP steps only, where you can also set your own retry count and delay.
Does Invoke Lambda Function support batch operations?
Run Invoke Lambda Function inside a loop to process each item in an array. TinyCommand does not throttle calls for you, so for large arrays add a Delay step if you need to stay within AWS Lambda's rate limits.
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