Add THRONE MCP Gateway API

[mdfifty50-boop]

API Details

• Title: THRONE MCP Gateway
• Description: 20 production MCP servers for AI agent infrastructure (safety, observability, compliance, intelligence) + REST APIs for ZATCA validation and GCC regulatory compliance
• OpenAPI spec URL: https://76-13-58-130.sslip.io/openapi.json
• Base URL: https://76-13-58-130.sslip.io
• Version: 1.0.0
• Categories: AI, Machine Learning, Developer Tools, Compliance

Endpoints

• 20 MCP server endpoints (JSON-RPC over HTTP)
• ZATCA e-invoice validation API
• GCC regulatory compliance check
• GCC VAT rates reference
• Document generation API
• Self-service API key purchase (USDC on Base L2)

Features

• Free tier: 50 calls/day
• x402 pay-per-call protocol
• OpenAPI 3.1 spec available at /openapi.json