Redirect & block
Send a request somewhere else. Or stop it altogether.
Mock an API. Redirect a request.
See which rule made the difference.
Stay in your flow with TrafficDeck.

Order API · Error state 500
For frontend developers and QA engineers
who need the right response, right now.
Test your error states with a static response. No backend release, no waiting for something to break.
See how it works →{
"error": "service_unavailable",
"message": "Please try again later."
}A rule is only useful when you can understand its effect. Follow TrafficDeck runtime events, inspect action details, and jump straight to the matched rule.
Actual DevTools panel · Demo runtime eventsThe essentials for repeatable testing,
in one connected workspace.
Send a request somewhere else. Or stop it altogether.
Make success, empty and error states reproducible.
Tune the request without changing application code.
Keep related rules together and inspect their changes.
Author in the dashboard. Sync to your browser.
Find the rule behind a TrafficDeck runtime event.
Explore the beta. No payment details needed.