DailyUtil Daily Utilities

HTTP Request Builder

Build, send, and debug HTTP API requests directly in your browser. Supports GET, POST, PUT, PATCH, DELETE, and HEAD with full control over headers, query parameters, request body, and authentication (Bearer token, Basic Auth, API Key). Inspect response status codes, headers, and formatted JSON. A browser-based alternative to Postman — no installation needed.

Response

No response yet. Send a request to see results.

Full HTTP Control

Set method, URL, headers, query params, body, and auth in one place.

Auth Support

Bearer, Basic Auth, and API Key authentication built in.

Response Inspector

View status codes, response headers, timing, and formatted body.

Zero Install

Runs entirely in your browser — no downloads or extensions needed.

HTTP Methods

GET
Retrieve data — safe, idempotent, no request body
POST
Submit data to create a new resource
PUT
Replace an entire resource — idempotent
PATCH
Partially modify specific resource fields
DELETE
Delete a resource permanently
HEAD
Same as GET but returns only response headers

HTTP Status Codes

2xx
Success — 200 OK, 201 Created, 204 No Content
3xx
Redirect — 301 Moved, 302 Found, 304 Not Modified
4xx
Client Error — 400 Bad Request, 401 Unauthorized, 403 Forbidden, 404 Not Found
5xx
Server Error — 500 Internal, 502 Bad Gateway, 503 Unavailable

Quick Reference

Bearer Auth Header

Authorization: Bearer eyJhbGciOi...

JSON Content-Type

Content-Type: application/json

{
  "name": "DailyUtil",
  "version": "2.0"
}

Query Parameters

GET /api/users
  ?page=1
  &limit=20
  &sort=created_at

HTTP Request Builder Use Cases

API Testing

Test REST endpoints with custom headers and auth without code.

Webhook Debug

Send POST payloads to webhook handlers and inspect responses.

Auth Flows

Test Bearer, API key, and Basic Auth configurations.

Integration QA

Validate 3rd-party APIs before writing production code.

API Testing Tips

Set Content-Type: application/json for JSON request bodies
Use Authorization: Bearer <token> for JWT auth
Check X-RateLimit-Remaining in response headers
Use query params for filters: ?page=1&limit=20
Browser CORS blocks cross-origin requests unless the server allows it
Use HEAD requests to check if a resource exists without downloading the body

Frequently Asked Questions

Related Tools

JWT Decoder URL Encoder JSON Viewer Base64 Tool IP Lookup DNS Lookup

API Testing and HTTP Request Building for Developers

APIs are the connective tissue of modern software. Every web application, mobile app, and microservice communicates through HTTP APIs. Our API request builder lets you construct, send, and inspect HTTP requests directly in your browser — supporting GET, POST, PUT, PATCH, DELETE, and HEAD methods with custom headers, query parameters, request bodies, and authentication. It is the fastest way to test an endpoint, debug an integration, or explore a third-party API without installing Postman or writing cURL commands.

HTTP Methods and RESTful Design

RESTful APIs follow a consistent pattern: GET retrieves resources, POST creates new resources, PUT replaces resources entirely, PATCH applies partial updates, and DELETE removes resources. Understanding these semantics is essential for building and consuming APIs correctly. Our builder makes it easy to switch between methods, set Content-Type headers, and format JSON request bodies with syntax highlighting. Response details include status codes, headers, timing, and the full response body — everything you need to verify an endpoint behaves as expected.

Debugging API Integrations

Common API debugging scenarios include incorrect authentication headers, malformed JSON bodies, CORS errors, and unexpected response formats. Our builder shows the exact request sent and the full response received, making it easy to isolate issues. For inspecting JWT auth tokens, use the JWT Decoder. Encode URL parameters with the URL Encoder. Format JSON responses with the JSON Viewer. Check DNS configuration with DNS Lookup. Explore all tools on the homepage.