cURL Builder
Build HTTP requests and generate cURL or Fetch commands.
How to reason about HTTP
cURL Builder helps make HTTP messages predictable. Method, status, headers, and body form a contract: changing one part can affect caching, security, or client behavior.
- Use methods according to intent: GET reads, POST creates or processes, PUT replaces, PATCH partially changes, and DELETE removes.
- Read status, headers, and body together; a 2xx status does not guarantee a business-valid payload.
- For cross-origin scenarios, account for preflight, credentials, and the browser origin.
Practical tip: Never paste real tokens, cookies, or keys into test tools.