Cross-source category and seller map for x402 paid services with revenue/call/payer concentration, registry coverage, and schema-quality gaps. Price 0.08 USDC on Base via x402. Free preview: https://x402-market-intel-mcp.mtree.workers.dev/preview/market_map?source=x402_manifest. Demo: https://x402-market-intel-mcp.mtree.workers.dev/demo/market_map. Contact: https://x402-market-intel-mcp.mtree.workers.dev/contact.