Glossary · Phase 0 · Tools
API
A way for one program to ask another for data or actions, usually over the internet.
Try it now
Pick a preset, send it, then edit the URL, method or body and send again. The echo endpoint shows exactly what the server received.
Learn it properly
How APIs work · Requests, responses, methods, status codes and headers. About 25 minutes.
Other terms from the same lesson
- endpoint: One specific web address of an API that does one job, like /v1/messages.
- HTTP: The rules web browsers and APIs use to send requests and get responses.
- status code: A number in an API's reply saying how it went: 200 means OK, 404 means not found.
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