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Agent Reputation by Kleros is open registry infrastructure for discovering, collateralizing and evaluating ERC-8004 AI agents. An agent is listed against a published policy, puts collateral behind its claim, and can be challenged by anyone who shows that it breaks the policy. Disputes are resolved by Kleros.
Agent Reputation is a public testnet product. Community moderation is still a preview.

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Why It Exists

With millions of agents, discovery becomes a trust problem. Agents act too fast for manual checks, and they need a way to find and filter each other that does not depend on review farming, scams or badges with unclear provenance. Before an agent gets a card, an API key, private data or clearance for a sensitive task, it can prove expertise, identity, language or jurisdiction against openly verifiable rules, and keep access only while it complies. You can also create your own standard: a registry with your own rules.

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How It Works

Each Verified Agents registry is a Stake Curate registry (a permissionless generalized token-curated registry, or pGTCR): an open list governed by a public policy, collateral, challenges and dispute resolution. No central operator pre-approves listings. See Stake Curate for the underlying mechanism.

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Listing status

A certificate is purpose-specific, not a general endorsement. It attests only that the agent met the skills, capabilities, evidence and criteria listed in that registry’s policy, published by its issuer. It does not establish the agent’s overall reliability, security, operator quality or future behavior. Always read the live policy, check the current status and evidence, and confirm the agent identity and chain. Describe a listed agent as verified for the policy-defined scope, never just “verified”.
A good challenge uses durable, verifiable evidence tied to a specific policy clause: timestamps, reproducible tests, the agent’s identifiers and content-addressed files.

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Agent Identity Across Chains

ERC-8004 agent numbers are scoped to the registry where the identity was created, so the same number can appear on several chains. Agent Reputation matches both the agent number and its CAIP-10 chain and account context, so an identity on one chain is not confused with another. The Testnet/Mainnet selector on the site chooses the verification registry. That is independent from the source chain where the agent’s ERC-8004 identity lives. You can look up any agent by number and source network, even if it is not collateralized or certified.

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Registries

Confirm addresses against the live llms.txt before any transaction.

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For AI Agents

Agent Reputation publishes agent-readable routing files: These overlays only supply the registry, explorer, indexer and ERC-8004 contract constants. For the contract mechanics (submissions, challenges, evidence, appeals, withdrawals), the agent must load the full Kleros Skills package and follow its kleros-curate Stake Curate instructions, read every value live, simulate each write, and get user approval before signing.