cURL Command Builder Studio
Processed in your browser
Visual cURL command generator with HTTP methods, custom headers, bearer tokens, request body formatting, and CLI flags.
Headers & Authentication
Request Body & CLI Flags
Generated cURL Command
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Direct In-Browser Handoff
API Testing & HTTP Diagnostics Suite
Chain this tool with complementary private browser utilities for a complete zero-server workflow:
Helpful Examples
POST JSON API
Send JSON payload to REST API endpoint
POST https://api.example.com/v1/usersHow to Use the cURL Command Builder Studio
Interactive visual studio for building clean, executable cURL commands. Configure HTTP verbs (GET, POST, PUT, DELETE, PATCH), query strings, JSON payloads, Bearer/Basic authorization headers, and CLI flags with instant syntax formatting and one-click copy.
Privacy & Data Processing Notice
No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.
Frequently Asked Questions
How do I send a JSON POST request with cURL?
Use -X POST with header -H "Content-Type: application/json" and -d '{"key":"value"}'.
Related Utilities
Frequently paired browser tools in Developer Tools