Look up an AI agent’s owner and profile using its blockchain identity, find ERC-8004 registry addresses, and generate an AgentCard JSON file describing services, supported trust models, and x402 support for registration.
ERC-8004 Trustless Agents — on-chain agent identity + reputation. Resolve an agent by id (Identity Registry ERC-721 → owner + AgentCard), list the canonical registry addresses, and generate a spec-compliant agent registration card (registration-v1, with x402 support + trust models). Custody-free, read + scaffolding. Triggers: ERC-8004, trustless agent, agent identity, agent registry, AgentCard, agent reputation, on-chain agent, A2A, agent discovery, agent card, 8004.
Run score Not tested
See how to installReview the instructions the agent will receive before you install.
ERC-8004 (draft EIP) gives AI agents a portable on-chain identity + reputation:
the Identity Registry is an ERC-721 ("AgentIdentity") deployed as a singleton
at the vanity address 0x8004A169… across many chains (verified on Base
mainnet). An agent's tokenURI points to an AgentCard describing what it does,
its endpoints (A2A/MCP), trust models, and x402 support.
| Tool | Purpose |
|---|---|
chaingpt_erc8004_resolve_agent | Resolve agentId → owner + decoded AgentCard (handles data: and https/ipfs tokenURIs). Read-only. |
chaingpt_erc8004_registries | The canonical Identity + Reputation registry addresses and the chains they're on. |
chaingpt_erc8004_agentcard | Generate a registration-v1 AgentCard JSON (name, services, supportedTrust, x402Support) to host at the tokenURI / /.well-known/agent-card.json. Optionally emits the data: URI form. |
chaingpt_erc8004_resolve_agent agentId=0 chain=base → the Genesis Agent.
Read + scaffolding are shipped and verified. The write path (register / giveFeedback / validation) is intentionally deferred: ERC-8004 is a draft whose write ABIs (especially the Validation Registry) are still being revised, so we don't ship unverified identity/reputation-mutating calldata. Generate the AgentCard here, then register via the project's reference contracts once the write ABI is final.
Reads use a public-RPC fallback chain; set BASE_RPC_URL for reliability.
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