What it does
Create a temporary callback address, give it to an external system and see incoming requests live.
An instant inbox for integration tests.
Start with a sample or add your own input.
Your result will appear here.
Understand the format, the calculation, and what to look for.
Create a temporary callback address, give it to an external system and see incoming requests live.
Keep this page connected. Events use at-most-once delivery and are not saved or replayed. A 200 response acknowledges receipt, not browser delivery.
256 KiB body, bounded connections and request rate. Sensitive headers are masked; body content is never executed or forwarded.