Free Online API & HTTP Tools
Look up HTTP status codes, convert cURL commands, build JWTs, test webhooks, and more. No signup required. 100% free and secure.
All API & HTTP Tools You Need
Comprehensive suite of API utilities for HTTP status codes, request building, authentication, and debugging.
Status Codes
Look up HTTP status codes.
Header Parser
Parse HTTP headers into key-value.
URL Parser
Decompose URLs into components.
Query Builder
Build URL query strings from params.
cURL to Code
Convert cURL commands to code.
Response Formatter
Format API JSON/XML responses.
JSON Path
Test JSONPath expressions.
HTTP Methods
HTTP method reference guide.
MIME Types
Look up MIME types by extension.
JWT Builder
Build JWT tokens for testing
OAuth URL
Generate OAuth authorization URLs
Webhook Tester
Test webhooks with custom requests
Request Logger
Log and inspect HTTP requests
Rate Limit Calc
Calculate API rate limits
Why Choose Our API Tools?
Lightning Fast
Instant results with real-time processing. All tools run in your browser.
100% Secure
No data stored or transmitted to servers. Complete privacy guaranteed.
Works Everywhere
No installation needed. Works on desktop, tablet, or mobile.
Developer Friendly
HTTP status codes, cURL converters, JWT builders, and tools that speed up your API workflow.
Perfect for Every Use Case
API Development
- Look up HTTP status codes quickly
- Convert cURL commands to code
- Build query strings from parameters
- Parse and decompose URLs
API Testing
- Test webhooks with custom requests
- Log and inspect HTTP responses
- Calculate API rate limits
- Build JWT tokens for authentication
API Documentation
- Reference HTTP methods and properties
- Look up MIME types by extension
- Format API response payloads
- Generate OAuth authorization URLs