API Testing Tools

20 tools available in this category

JWT Token Generator

Generate signed JWT tokens with custom payload

OAuth 2.0 Helper

Generate auth URLs and PKCE challenges

API Signature Generator

Generate HMAC signatures for API requests

Basic Auth Tool

Encode and decode Basic Authentication credentials

API Key Generator

Generate secure random API keys

HTTP Request Builder

Build and preview HTTP requests visually

cURL to HTTP

Convert cURL commands to HTTP request details

HTTP to cURL

Convert HTTP request details to cURL commands

Postman Parser

Extract requests from Postman collections

Request Logger

Format and beautify HTTP request/response logs

JSON Payload Generator

Generate dummy JSON payloads from templates

GraphQL Formatter

Format and validate GraphQL queries

Webhook Builder

Build webhook payloads for common services

Mock Data Generator

Generate realistic mock API data

HTTP Status Codes

Detailed reference for HTTP status codes

API Response Diff

Compare two API JSON responses

Rate Limit Simulator

Visualize and calculate rate limit windows

API Error Builder

Build standardized API error responses

OpenAPI Validator

Validate OpenAPI/Swagger schema structure

API Docs Generator

Generate markdown documentation from requests