Add x402 Registry — 53 MCP tools

[al3al3al333]

Server: x402 MCP Registry
URL: https://etherealgoodsco.store
MCP Endpoint: https://etherealgoodsco.store/mcp/sse
Description: 53 pay-per-call security & enrichment tools for AI agents.
Smart contract audits, threat intel, OSINT, DNS/WAF recon, crypto data.
HTTP 402 + USDC on Base mainnet. No API keys. First call free.
Server Card: https://etherealgoodsco.store/.well-known/mcp/server-card.json
Docs: https://etherealgoodsco.store/docs