DevBolt
Processed in your browser. Your data never leaves your device.

How do I build an HTTP request and generate code online?

Select the HTTP method, enter a URL, then configure headers, query parameters, authorization, and body using the visual builder. The tool instantly generates working code in cURL, JavaScript, Python, Go, Rust, and PHP. Copy the generated snippet into your project. Everything runs in your browser — your data never leaves your device.

Build GET request
Input
Method: GET
URL: https://api.example.com/users
Headers:
  Authorization: Bearer token123
  Accept: application/json
Output
curl -X GET \
  'https://api.example.com/users' \
  -H 'Authorization: Bearer token123' \
  -H 'Accept: application/json'
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HTTP Request Builder

Build HTTP requests visually and generate code in cURL, JavaScript, Python, Go, Rust, or PHP. The reverse of cURL to Code.

About HTTP Request Builder

  • Build HTTP requests visually — set method, URL, headers, query parameters, auth, and body without writing code.
  • Generate code in 6 languages: cURL, JavaScript (fetch), Python (requests), Go (net/http), Rust (reqwest), and PHP (curl).
  • Supports Bearer tokens, Basic Auth, and API key authentication in headers or query parameters.
  • This is the reverse of cURL to Code — build a request visually instead of parsing a command.
  • Everything runs in your browser — no data is sent over the network.

Related tools

cURL to CodeJSON FormatterJWT DecoderURL EncoderHTTP Status Codes

Tips & Best Practices

Pro Tip

Use PUT for full resource replacement, PATCH for partial updates

PUT replaces the entire resource — if you PUT a user object without the email field, the email is deleted. PATCH updates only the fields you send. Most API consumers want PATCH semantics but mistakenly use PUT, causing data loss.

Common Pitfall

GET requests should never have side effects

GET requests can be retried, cached, prefetched, and bookmarked by browsers and CDNs. A GET endpoint that deletes data or sends emails will trigger those actions every time someone shares the URL or a browser prefetches it.

Real-World Example

Always include Content-Type and Accept headers for API requests

Content-Type tells the server what format you're sending (application/json). Accept tells it what format you want back. Omitting these causes 415 Unsupported Media Type errors and format negotiation bugs that are hard to diagnose.

Security Note

Never send credentials in URL query parameters

Query strings are logged in server access logs, browser history, proxy logs, and referrer headers. Use Authorization headers (Bearer tokens) or request bodies for credentials. URLs with tokens also get indexed by search engines if linked.

Frequently Asked Questions

How do I build an HTTP request without code?
Use the visual builder to set the HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS), enter the URL, add headers, query parameters, authorization (Bearer token, Basic Auth, API Key), and a request body (JSON, form-urlencoded, or raw). The tool generates working code in cURL, JavaScript (fetch), Python (requests), Go (net/http), Rust (reqwest), and PHP (curl). Copy the generated code and paste it into your project. Everything runs in your browser — no data is sent to any server.
How is this different from Postman or ReqBin?
This tool focuses on code generation rather than executing requests. Postman and ReqBin send actual HTTP requests from their servers. DevBolt's HTTP Request Builder runs entirely in your browser and generates ready-to-use code in 6 languages. There is no account, no download, and no data leaves your device. It is ideal for quickly scaffolding API calls in your preferred language without installing a desktop app.
What authentication methods are supported?
The builder supports Bearer Token (adds Authorization: Bearer header), Basic Auth (base64-encoded username:password, uses native auth mechanisms in each language like requests auth= in Python and -u in cURL), and API Key (sent as a custom header or query parameter). Each auth method generates idiomatic code for the selected language.
Can I send a JSON body with a GET request?
While technically possible, sending a body with GET is discouraged by HTTP specifications and many servers ignore it. The builder allows it for flexibility (some APIs like Elasticsearch accept GET with body), but best practice is to use POST, PUT, or PATCH for requests with a body. The builder does not restrict method-body combinations so you can match your API's requirements.

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