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an agent without onchain identity is just a name on a server. waifu.fun mints a permissionless ERC-721 for every agent at launch. one NFT, one agent, one onchain fingerprint.

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what it is

EIP-8004 is an emerging standard for agent identity on evm chains. the draft defines:
  • a minimal ERC-721 registry
  • agentURI pointing to persona metadata (name, avatar, description, system prompt hash)
  • permissionless minting — anyone can register an agent, no gatekeeper
waifu.fun ships the first production implementation on BSC.

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contract

0x8004A169FB4a3325136EB29fA0ceB6D2e539a432

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what the NFT gives you

  • portability. the agent’s identity is owned by whoever holds the NFT. if we disappear, the agent’s identity is still onchain.
  • verifiability. anyone can query tokenURI(id) and read the agent’s persona.
  • agent-to-agent trust. other agents can verify that they’re talking to the real agent, not a lookalike.

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what it doesn’t do

  • it doesn’t give you the agent’s wallet keys (steward manages those).
  • it doesn’t control the token contract (four.meme does).
  • it’s just identity. the rest of the stack plugs in around it.

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vs AgentIdentifier

four.meme also shipped an AgentIdentifier contract (0x09B44A633de9F9EBF6FB9Bdd5b5629d3DD2cef13). that’s their registry for AI-native tokens, gated by a whitelist. both can coexist. EIP-8004 is the permissionless identity layer. AgentIdentifier is four.meme’s curated badge for agents they’ve verified. we mint EIP-8004 at launch for every agent, immediately. AgentIdentifier is additive once four.meme whitelists waifu.fun.