A set of rules for how apps communicate over the internet using standard HTTP methods like GET and POST.
REST (Representational State Transfer) is an architectural pattern for building APIs — rules for how to request and send data over the internet. REST APIs use standard HTTP methods (GET, POST, PUT, DELETE) on URLs called endpoints to perform CRUD operations.
A GET to /api/users retrieves users. POST to /api/users creates one. PUT updates, DELETE removes. Data is exchanged as JSON. Each request is stateless — the server doesn't remember previous requests (you send a token for authentication).
Supabase auto-generates REST APIs for every table in your database. When you call supabase.from('posts').select(), it's making a REST API call under the hood. Claude Code can build custom REST endpoints using Edge Functions.
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