Developer Tools← Back to glossary

What is API?

Application Programming Interface is a contract that defines how software components interact through endpoints, parameters, and data formats. It enables reuse and integration.

Related tools

Try these DevStackIO tools for API:

HTTP Header ParserParse raw HTTP headers into readable name-value pairs. Use when debugging responses; for URL parts use url-parser. Input: header text ≤10MB. Returns table of headers. 100% client-side.Open tool →

Related terms

REST
HTTP

About this glossary

Definitions are written in plain language and sourced from MDN Web Docs, W3C specifications, and RFCs. Related tools run 100% in your browser — no data leaves your device.

Browse all 40 terms →