https://x402-resource-scanner.vercel.app/signal-desk2026-05-25weekly https://x402-resource-scanner.vercel.app/signal-desk/proof2026-05-25weekly https://x402-resource-scanner.vercel.app/signal-desk/examples2026-05-25weekly https://x402-resource-scanner.vercel.app/use-cases/agent-spend-decision-receipts2026-05-25weekly https://x402-resource-scanner.vercel.app/compare/x402-proof-layer2026-05-25weekly https://x402-resource-scanner.vercel.app/compare/signal-desk-vs-agent-budget-limits2026-05-25weekly https://x402-resource-scanner.vercel.app/signal-desk/marketplaces2026-05-25weekly