Start free
ActionAWS LambdaUpdated June 2026

What Lambda functions exist in this region?

Short answer: You can list lambda functions in AWS Lambda by hand from its own interface, but it won’t repeat itself. On TinyCommand, add the AWS Lambda List Lambda Functions action to a workflow, map its 1 input from any upstream app, and it runs automatically every time the trigger fires. No code, and a free tier to start.

List Lambda Functions in AWS Lambda — start free All 2 AWS Lambda actions
List Lambda Functions in AWS Lambda — start free
Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

FieldTypeRequiredDescription
Max Results
max_items
numberOptionalHow many functions to return (1-10000). Default 50.
Sample request
{
  "max_items": "{{trigger.max_items}}"
}
Returns
{
  "Functions": [
    {
      "Handler": "index.handler",
      "Runtime": "nodejs20.x",
      "FunctionArn": "arn:aws:lambda:us-east-1:123456789012:function:my-function",
      "FunctionName": "my-function",
      "LastModified": "2026-05-01T12:00:00.000+0000"
    }
  ]
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for List Lambda Functions.

Any of these apps can fire this action as part of a workflow.

Gmail → AWS Lambda
1 Gmail triggers
Slack → AWS Lambda
13 Slack triggers
Google Sheets → AWS Lambda
2 Google Sheets triggers
HubSpot → AWS Lambda
18 HubSpot triggers
FAQ

Questions about List Lambda Functions.

What does the List Lambda Functions action do in AWS Lambda?
Returns all Lambda functions in the connected AWS account + region with name, runtime, and ARN. Useful for inventorying available functions when setting up an Invoke action.
What inputs does List Lambda Functions require?
List Lambda Functions has no required inputs. Sensible defaults are applied if you leave fields blank.
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 workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.
Does List Lambda Functions support batch operations?
Yes. Run List Lambda Functions inside a Loop node to process arrays. TinyCommand handles AWS Lambda's rate limits automatically so you don't have to throttle manually.
More actions

Other AWS Lambda actions.

Action
Invoke Lambda Function
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.
List Lambda Functions in AWS Lambda — start free