API Request Builder

Build HTTP requests with headers, query params, and body, then generate cURL, Fetch, Axios, Python, or PHP code. Code only — no request execution.

Introduction

API Request Builder is a free, browser-based utility in our API Tools collection. Assemble method, URL, headers, query parameters, and body, then generate client code for cURL, JavaScript Fetch, Axios, Python Requests, and PHP cURL. Generates code only — it does not execute the request. API Request Builder is for the moment between “I know the endpoint” and “I need a snippet in my language.” Add Authorization and Content-Type headers, query params, and JSON/form/raw bodies, then switch tabs to copy cURL, Fetch, Axios, Python, or PHP. Unlike a live request tester, credentials and payloads never leave your browser as a network call from this page. Pair with cURL to Code when you already have a DevTools cURL, or Webhook Tester when you need to inspect inbound callbacks. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include get, post, put, patch, delete.

Features

GET, POST, PUT, PATCH, DELETE
Multi-row headers and query parameters
JSON, form, and raw body modes
cURL, Fetch, Axios, Python Requests, PHP output
Client-side only — no request execution

How to use

1
Choose a method and paste the base URL.
2
Add headers and query parameters as needed.
3
Set a body type for write methods, then copy the generated snippet.

Example

POST JSON user

Input

POST https://api.example.com/users
Authorization: Bearer token
{"name":"Ali"}

Output

curl --request POST --url ... --header ... --data ...

Benefits

Run API Builder entirely in the browser with no signup or installation.
Keep sensitive sample data private — processing never leaves your device.
GET, POST, PUT, PATCH, DELETE
Multi-row headers and query parameters
JSON, form, and raw body modes
Pair it with cURL → Code and Webhook when your workflow needs adjacent utilities.

FAQs

No. It only generates request code. Your URL, tokens, and body stay in the browser and are not sent to EverydayDevTools servers.

cURL to Code starts from an existing cURL command. API Request Builder starts from form fields and can emit cURL plus several languages.

Yes. Choose form mode and paste a JSON object of fields; they are encoded as application/x-www-form-urlencoded.

Tokens never leave your browser via this tool, but avoid pasting production secrets on shared machines. Prefer short-lived test tokens.

Yes. API Builder on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.

No. API Builder runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.

Assemble method, URL, headers, query parameters, and body, then generate client code for cURL, JavaScript Fetch, Axios, Python Requests, and PHP cURL. Generates code only — it does not execute the request. It fits everyday api tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.

Core capabilities include: GET, POST, PUT, PATCH, DELETE; Multi-row headers and query parameters; JSON, form, and raw body modes; cURL, Fetch, Axios, Python Requests, PHP output.