About HttpStatus.com

HttpStatus.com started as a place to look up what a status code means and grew into a small toolbox for the moments when an HTTP response is not what you expected. The site has three parts: a reference page for every standard status code, ten developer tools that cover the checks we found ourselves repeating most often, and an MCP server that hands the same tools to AI coding assistants.

How it is built

Every page you see is static HTML generated ahead of time and served from Cloudflare's edge, which is why it loads instantly and why we can run it at almost no cost. Tools that have to look at another server, such as the URL status checker or the redirect tracer, cannot run in a browser because of CORS, so they send only the URL you typed to a small edge function that performs the request and returns metadata. That function keeps no logs of URLs and refuses to touch private networks.

Why the codes matter

Status codes are the shared vocabulary between clients, servers, proxies, caches and search engines. Getting them right affects everything from whether a browser retries a request to whether Google keeps a page in its index. Each code page here explains the semantics as defined in RFC 9110 and related standards, then the practical side: what usually causes it, how to fix it from either end, and a live endpoint that returns the code so you can test your own handling.

Support and feedback

The site is free and supported by unobtrusive advertising. If something is wrong or missing, or a tool misbehaves for a URL it should handle, we would like to know — the best way is to open an issue on the project's public repository (linked from the footer once published) or to email hello at this domain.