Processed locally in your browser — not uploaded
cURL Command Builder & Code Exporter
Interactive HTTP request builder and code generator. Configure HTTP methods, endpoint URLs, headers, query parameters, Bearer & Basic Authentication, and JSON/Form request payloads. Automatically exports matching cURL commands alongside native code snippets for JavaScript fetch(), Axios, Python requests, Go net/http, and Node.js.
HTTP Request Headers
curl -X POST "https://api.example.com/v1/users?version=2026" \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-H "Authorization: Bearer your_secret_api_token_here" \
-d "{
\"name\": \"Jane Doe\",
\"email\": \"jane@example.com\",
\"role\": \"administrator\"
}"How to use
- Select the HTTP Request Method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS).
- Enter the target API Endpoint URL (e.g., https://api.example.com/v1/users).
- Configure HTTP Request Headers, Query Parameters, and Authentication credentials (Bearer Token or Basic Auth).
- Input your JSON or Form Data request body if applicable.
- Copy the generated cURL CLI command or switch target language to export JavaScript fetch(), axios, Python requests, or Go code.
Understanding the output
The builder formats standard cURL CLI flags (-X method, -H header, -d body, -u auth) and translates your HTTP request structure into native code snippets for popular backend and frontend programming languages.
Common issues & tips
- •Ensure your API endpoint URL includes the protocol (https:// or http://).
- •When sending JSON request bodies, ensure your JSON string is valid and that the Content-Type header is set to application/json.
- •For APIs requiring CORS authorization in browser environments, verify that your API server emits Access-Control-Allow-Origin headers.
Frequently asked questions
- Which programming languages and libraries are supported for export?
- The tool exports cURL CLI commands, JavaScript fetch(), Axios, Python requests, Go net/http, and Node.js native fetch.
- Is my API key or password sent to any server?
- No. Code generation happens 100% locally in your browser. Tokens and request credentials never leave your machine.
- How do I add Bearer token authentication?
- Switch to the Authentication tab, select 'Bearer Token', and enter your API token. The tool automatically constructs the 'Authorization: Bearer <token>' header across all code exporters.
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