n8n Studio
Workflow tester for n8n
Inspect and test n8n workflows on one screen, no tab-switching.
It's Monday morning. Your n8n workflow ran on Friday. It failed somewhere in the middle and the Executions tab is a stack of collapsed JSON blobs. You click into a node, copy a payload, paste it into a scratch file, search for the part that broke. You scroll. You scroll more. You give up and re-run the whole thing.
n8n Studio is one screen that shows the workflow graph, every node's resolved parameters, the input that flowed in, the output that came out, and whether each step succeeded. Click a run, see what happened.
How it works
Everything on one screen
The workflow graph, every node's resolved parameters (after {{ }} expressions evaluate), the input that flowed in, and the output it produced. All visible at the same time. No clicking back and forth between the Executions tab and the editor.
Save your n8n connections
Add your n8n URL and API key once. Add another for staging, another for self-hosted, another for cloud. Switch between them from the sidebar without re-authenticating.
Replay any past execution
Pick an old run, see exactly what it looked like, hit run again. Your workflow may have changed since. The replay tells you whether your fix held.
Smart payload inspection
HTTP body params with JSON-encoded HTML (HubSpot notes, Gmail messages, that kind of thing) auto-unwrap and render inline. Long keys don't wrap mid-word, values right-align, deep trees flatten so you can scan a 12-level payload without scrolling sideways.
Your data never leaves your machine
No env vars, no backend, no database. Your n8n URL and API key live in your browser's localStorage and never leave the device. The Next.js API routes only proxy from your browser to your own n8n instance, using the URL and key you typed in. They exist to keep your API key out of the network tab and avoid CORS. Nothing phones home.