Free tool · No sign-up required · Beta
ERC-8004 Inspector —
on-chain agent identity, read live.
Enter an agent ID and read its ERC-8004 identity and reputation directly from Ethereum — the Identity Registry and Reputation Registry defined by the “Trustless Agents” standard. No indexer, no paywall — just a live on-chain read.
Registries covered
Networks recognized
Try a real agent on every network
Agent ID 1is registered and readable on all 7 networks below — confirmed live before publishing this page. The same ID doesn't mean the same agent on every chain; each network runs its own registry.
| Network | Agent ID | What you'll see |
|---|---|---|
| Ethereum | 1 | Owner + reputation feedback |
| Base | 1 | Owner + reputation feedback |
| Base Sepolia | 1 | Has JSON metadata (tokenURI) |
| Arbitrum | 1 | Owner + reputation feedback |
| Polygon | 1 | Owner + reputation feedback |
| Avalanche | 1 | Owner + reputation feedback |
| BNB Chain | 1 | Owner + reputation feedback |
| Base Sepolia | 13 | “Corgent” — a real named agent with rich metadata |
All 7 are one-click examples inside the tool itself.
What it looks up
Identity Registry lookup
Reads the ERC-721-based Identity Registry directly — owner address, the agent's registered wallet, and its tokenURI. If the tokenURI is an http(s) JSON document, it's fetched and shown, not just the raw link.
Reputation Registry lookup
Reads how many clients have given an agent feedback and the aggregate score across them — a trust signal you can weigh yourself, not a verdict the tool makes for you.
Live on-chain reads, not an index
Every lookup is a direct call to the registry contracts via public RPC at the moment you ask — nothing pre-crawled, nothing cached, no third-party paywall in the path.
Six networks, one address space
The Identity and Reputation registries deploy at the same address on every EVM chain — Ethereum, Base, Arbitrum, Polygon, Avalanche, and BNB Chain are all covered, plus Base Sepolia for testing.
Agent ID only, by design
The Identity Registry isn't ERC-721-Enumerable, and free RPC providers reject the unbounded event-log queries an address-to-agent-ID lookup would need. Agent ID input avoids depending on infrastructure this tool can't guarantee.
Beta, honestly labeled
ERC-8004 is a draft Ethereum standard — addresses and behavior may change before finalization. Every result is framed as a trust signal found on-chain, never as a trust verdict.
Who uses it
Agent / AI-infra developers
Before an autonomous agent pays or delegates to a counterparty via a protocol like x402, check that counterparty's on-chain identity and reputation as a pre-payment trust signal.
Security researchers
Trace an agent's registered owner and wallet, and see how much (and what kind of) feedback it has accumulated, without writing raw eth_call scripts.
Ecosystem builders
Verify your own agent's registration looks right — owner, wallet, metadata — the same way you'd check a DNS record or an OAuth discovery document before shipping.