HTTP request builder. Build API requests visually and generate code snippets for fetch, axios, curl, Python requests.
100% browser-based — your data never leaves your device
Build HTTP requests interactively and generate code snippets in multiple languages.
fetch(class="hljs-string">"https://api.example.com/data", {
method: class="hljs-string">"GET",
headers: {
class="hljs-string">"Content-Type": class="hljs-string">"application/json",
class="hljs-string">"Authorization": class="hljs-string">"Bearer token"
},
})
.then(res => res.json())
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Request Builder is a free online api tool that build http requests interactively and generate code snippets in multiple languages. It works entirely in your browser — no downloads, no installations, and no server uploads required. backend developers, QA engineers, integration specialists use Request Builder when they need a fast, privacy-respecting way to process api data without installing additional software. It supports capabilities such as visual builder, multi-language, auth support. Additional features include one-click copy. Common use cases include generate fetch or axios code snippets for quick integration into web apps, build authenticated api requests with bearer tokens or api keys, convert visual request configurations into production-ready code. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Request Builder ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Request Builder is a free online api tool that helps you build http requests interactively and generate code snippets in multiple languages. Key capabilities include visual builder, multi-language, auth support. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to generate fetch or axios code snippets for quick integration into web apps.
Fill in the URL, select HTTP method, add headers, query parameters, and request body using the visual form fields.
Choose from Basic Auth, Bearer Token, or API Key authentication methods and enter your credentials.
Pick your desired output language — JavaScript fetch, axios, Python requests, cURL, Go, or Rust.
Click the Copy button to copy the ready-to-use code snippet directly to your clipboard.
| Category | Details |
|---|---|
| Input Limits | Request timeout: Configurable (default: 30 s) |
| Response size: Browser memory bound | |
| Supported Formats | HTTP/1.1, HTTP/2, WebSocket, JSON, XML, Form data, Binary |
| Browser Engine |
|
All operations run entirely in your browser using built-in API APIs. No server uploads, no data storage, and no third-party requests.
Request Builder is ideal when you need to generate fetch or axios code snippets for quick integration into web apps without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for collaborative API development and testing, consider using Postman. For for lightweight REST and GraphQL debugging, Insomnia may be a better fit. Request Builder fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. Request Builder processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
JavaScript (fetch, axios), Python (requests), cURL, Go, and Rust are currently supported. More languages are planned.
Yes. Add custom headers, query parameters, and request body. Auth options include Basic Auth, Bearer Token, and API Key headers.
Build requests with form fields for URL, method, headers, body, and params.
Generate code for fetch, axios, curl, Python requests, and more.
Basic auth, Bearer token, API key header generation.
Copy generated code snippets directly to clipboard.
Request Builder is useful in a variety of scenarios across different workflows:
Generate fetch or axios code snippets for quick integration into web apps
Build authenticated API requests with Bearer tokens or API keys
Convert visual request configurations into production-ready code
Use the multi-language export to generate code in JavaScript, Python, Go, and Rust — perfect for teams using different stacks.
Build requests with different auth types (Basic, Bearer, API Key) visually before committing to code implementation.
Explore more tools in the API workspace:
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Validate OpenAPI 3.x and Swagger 2.0 specifications for correctness.
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Generate mock API responses from JSON schemas for rapid development.