Erc-8004

Know Your Agent (KYA): AI Agent Identity, the Standards Race, and What Is Actually On-Chain

Know Your Agent (KYA): AI Agent Identity, the Standards Race, and What Is Actually On-Chain

An identity credential or an on-chain registration number is insufficient grounds to let an AI agent spend money or access data. Identifying the agent, authenticating the requester, checking its authority for this action, and deciding how much to trust past feedback are separate checks. Know Your Agent (KYA) groups these concerns under one name. ERC-8004 supplies identifiers and public trust signals; Visa TAP and identity-verification vendors offer other ways to check requests, organizations or people. The service receiving the request still decides whether to grant access. The ERC-8004 specification and Trulioo’s product description both limit what registration or verification establishes.

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ERC-8004 Agent Reputation: On-Chain Registration and Lookup

ERC-8004 Agent Reputation: On-Chain Registration and Lookup

A prior post on this blog covered the ERC-8004/8126/8196 trust stack: three Ethereum registries that handle agent identity, reputation, and validation. If you want the conceptual overview first, start there. This post is about something narrower: how feedback actually gets written to the Reputation Registry, how to read it back, and what services are available today to browse and index that data.

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The AI Agent Trust Stack: ERC-8004, ERC-8126, and ERC-8196

The AI Agent Trust Stack: ERC-8004, ERC-8126, and ERC-8196

When an AI agent acts on behalf of a user (spending funds, calling contracts, accessing paid APIs), the obvious question is: how do you know this agent is safe? The Ethereum community has three standards that address different layers of that question. They don’t solve the whole problem, but they’re building toward a coherent stack.

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