Identity, Trust & Verification

how an agent proves who it is

2 of 28 The Agent Protocol Atlas

• Web Bot Auth Cryptographically proves which agent is making a request via HTTP Message Signatures — because a User-Agent string can be forged and a signature cannot.
• ERC-8004 An Ethereum standard adding on-chain Identity, Reputation and Validation registries so agents can be discovered and trusted across organizational boundaries — a trust layer that extends A2A.

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