Testing a tool
Before using a tool in a real flow, you can test it directly from the catalog or the tool editor with sample data. This verifies that the logic, authentication, and output are correct.
Steps
- 1In the tool catalog, click the tool you want to test.
- 2In the detail view, click the «Test» or «Run» button.
- 3Enter a sample payload in JSON format that simulates the variables the flow would pass to it.
- 4Click «Execute». The result appears in the output panel.
- 5Verify the output: structure, data types, values. If something fails, the error is shown in detail.
- 6Adjust the tool configuration and retest until the output is as expected.
Reference
- Test payload
- JSON with the variables the tool needs as input. Simulates what the flow would send.
- Output panel
- Shows the execution result: the full output object and execution time.
- Error logs
- If the tool fails, shows the exact error: HTTP code, external service message, stack trace (code tools).
- Test from canvas
- You can also test a single node from the canvas: right-click the node → «Test node».
Common errors
- Empty / null output
- The tool ran without error but returned empty. Check the transform logic or the API response format.
- Authentication error in test
- Tests use the same connector credentials as production. If it fails, the connector has an error.
Next step
With tools understood, build complete flows in the Flow Builder.