"author:something-agent" matching MCP servers:

Enables verification of x402 signed offers and receipts, plus signer-authorization evidence via did:web, DNS, and ERC-8004 lookups. Also provides unpaid preflight checks for x402 endpoints and ERC-8004 agent lookups.

Enables users to run read-only trust checks on an x402 endpoint and receive a signed report covering endpoint lint, signed offers, ERC-8004 identity, and payer mix before paying.