TL;DR: We needed a simple tool to check whether an HTTP endpoint had CORS enabled. I created one. You can use it here for public endpoints or clone it for local endpoints – its open source. I’d love it if you helped me improve it!
A while ago, we had need in the team to verify that an endpoint (URL) on our website had Cross-Origin Resource Sharing (CORS) enabled. The endpoint was being consumed by a 3rd party, and we’d broken their site with one of our changes. Our team-internal processes had missed the regression, mainly because we didn’t have a tool we could use to check whether CORS was enabled for the endpoint. I looked for a simple tool that we could use, and didn’t find any, so I decided to create one.
I hope you find it useful 🙂
If you’d like to help me improve it, take a look at the issues on Github.