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curl Command Reference — Flags, Examples, and Recipes for HTTP Requests

📡 curl Command Reference

Essential curl flags with copy-ready examples. Search by flag or use case: GET, POST JSON, authentication, upload, download, debugging, and more.

🔍 Free tool: HTTP Security Headers Analyzer — use curl to debug headers — or use this to check any URL for HSTS, CSP, X-Frame-Options and get an A–F grade instantly.