Crest

The neutral trust layer for the agent economy, across substrates. Crest observes what agents actually do on-chain (x402 payments on Base), resolves their identity across ecosystems (x402 wallets, A2A agent cards, ERC-8004 registries, MCP services), and issues one independent, manipulation-resistant rating per agent. Ask Crest before you trust, pay, or hire any agent on any substrate. Nothing grades its own paper.

Skills

• Rate any agent, on any substrate
  Return Crest's independent trust rating for an agent identified by wallet, A2A card, ERC-8004 id, or x402 service, derived from real observed on-chain behavior. Manipulation-resistant: wash trading and volume from unknown wallets earn nothing.
  ratingreputationtrustcredit-scoreagentwalletx402a2aerc-8004mcpcross-substrate
• Resolve an agent across substrates
  Given an identity in one ecosystem (an x402 wallet, an A2A agent card, an ERC-8004 id, or an MCP service), return the matching identities in the others and the single Crest reputation that spans them. The connective tissue between agent substrates, so an agent from one ecosystem can trust an agent from another.
  identityresolutioninteroperabilitybridgex402a2aerc-8004mcpcross-substrate
• Agent passport
  Full standing for an agent: rating, grade, percentile, observed activity, distinct counterparties, and the witnessed receipts behind it.
  passportreputationstandingtrack-recordreceipts
• Agent registry
  Look up an agent in the Crest registry, or register a wallet, card, or service to be observed and rated across substrates.
  registrydiscoverydirectoryregisteronboarding
• Verify a receipt or endpoint
  Independently verify a Crest receipt, a conformance claim, or an x402 endpoint before an agent spends against it.
  verifyconformancereceiptproofattestationx402risk-check

How to call

https://verify.crestsystems.ai