JWT Decoder & Inspector API - REST + MCP, Free Tier

#jwt #auth #security #token

JWT Decoder & Inspector API

Decode and inspect JWT tokens without a secret key. Returns header, payload, expiry, algorithm, and validity window. Perfect for debugging auth flows. Free: 500 req/day.

Quick Start

# Health check
curl https://api.lazy-mac.com/jwt-decoder-api/health

# API info
curl https://api.lazy-mac.com/jwt-decoder-api

Endpoints

{'path': '/decode', 'method': 'POST', 'description': 'Decode a JWT token'}
{'path': '/validate', 'method': 'POST', 'description': 'Check token expiry and structure'}
{'path': '/claims', 'method': 'POST', 'description': 'Extract specific claims'}
{'path': '/health', 'method': 'GET', 'description': 'Health check'}

Pricing

Plan	Price	Features
Free	$0/mo	100 req/day, core endpoints
Pro	$Free / $5/mo	Unlimited, all endpoints, MCP

MCP Integration

This API supports the Model Context Protocol (JSON-RPC 2.0):

curl -X POST https://api.lazy-mac.com/jwt-decoder-api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"tools/list","id":1}'