HTTP Testbed
Return any status, delay, redirect or payload size to exercise client retry and timeout logic.
A set of free HTTP test endpoints you can call straight from curl: return any status code, delay for N seconds, chain redirects, return a payload of a given size, gzip, ETag and cache headers, Basic/Bearer auth. Use them to check how your client behaves around timeouts, retries, redirects and caching.
How to use
- Pick an endpoint from the table and hit “Try” to see the real response.
- Or append the path to the base URL and call it with curl or Postman.
- Change the number in the path as needed, e.g. /hb/status/503 or /hb/delay/5.
FAQ
- Why is there no /redirect-to?
- Because it is an open redirect. Allowing an arbitrary external URL as the redirect target turns this site into a springboard for phishing links, and a domain blacklisted by security vendors is very hard to recover. The self-contained /hb/redirect/{n} only redirects within this service, which is safe and sufficient.
- Why are delay and size capped?
- These endpoints are public: long delays hold connections open and large responses burn egress bandwidth — both are real costs and easy to abuse as free bandwidth. The caps are 10 seconds, 1MB and 10 redirects; anything larger is clamped rather than rejected.
- How does this differ from httpbin.org?
- It is a deliberately safer subset: the open redirect and the endpoint that leaks server environment variables are removed, and delay and size have hard caps. In exchange it is same-origin with the rest of Zapbox, under our control, and every trade-off is documented.
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