# API Request Builder — Generate curl, fetch, axios and More

> Build an HTTP request visually and get it as curl, fetch, axios, Python, Go or PHP code.

An API request builder turns a method, URL, headers and body into working code — curl, fetch, axios, Python requests, Go or PHP. This one deliberately does not send the request: firing it would mean proxying through a server, and any Authorization header you pasted would then have been seen by that server. Generating code keeps credentials on your machine.

**URL:** https://convertto.tech/t/api-request-builder
**Category:** Developer Tools (https://convertto.tech/c/developer-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Network:** No request is ever sent — code is generated, not executed
- **Languages:** curl, HTTPie, fetch, axios, Python, Go and PHP
- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Choose the method.
2. Enter or paste your url.
3. Choose the authentication.
4. Enter or paste your credential.
5. Enter or paste your headers.
6. Enter or paste your request body.
7. Choose the generate for.
8. Turn "Format the body as JSON" on or off as needed.
9. The result appears immediately — copy or download it.

## FAQ

### Why does this not just send the request?

Browsers cannot call most APIs directly because of CORS, so any "online API client" is routing your request through its own server — headers, tokens and body included. That is a genuine credential disclosure, not a theoretical one. Generating code and running it yourself avoids it entirely.

### Is it safe to paste a real token here?

Nothing is transmitted, so it does not leave your machine. But generated code has a habit of ending up in chat messages and commits, so using a variable name like $API_TOKEN and setting it in your environment is the better habit regardless of this page.

### Why does the fetch example check response.ok?

Because fetch does not reject on HTTP error status. A 404 or a 500 resolves normally and only a network-level failure rejects, which is the single most common source of silent bugs in code that uses it. The generated snippet includes the check for that reason.

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