Logger

Add a step to log messages or data objects. Useful for debugging or tracking flow activity.

Use the Logger component to record messages, variable values, or object data at any point in your flow.

It helps you monitor progress, validate logic, and troubleshoot issues by providing real-time insights into flow execution.

How does it help?

• Monitor flow execution and debug easily

• Log key events, data points, or outcomes

• Improve visibility and traceability during automation runs

Where to view logs?

All your flow logs are available in the Logs section, accessible from the left navigation panel inside your Fastn workspace.

This section displays a list of all your flows including the request and response logs (including start and end points).

• Any custom Logger entries you’ve added as part of your flow steps would be reflected here as well.

Use Case

Suppose you are processing files inside a Loop over Templates step, and each iteration checks a file’s processing status. You may want to log the count of:

• Skipped files

• Successfully processed files

• Failed files

Steps

• Add a Logger step after your loop.

• In the Message field, enter a summary string such as:

When your flow runs, this message will appear as a separate log entry in the Logs section of Fastn under that specific flow.

This lets you easily track loop outcomes and data processing metrics without searching through the entire flow execution trace:

Use multiple Logger steps in key parts of your flow (e.g., before loops, after variable changes, or after conditional branches) to get detailed, structured insights during execution.