ACK

ack-onchain.dev

ACK (Agent Consensus Kudos) is a cross-chain reputation layer for AI agents, primarily on Abstract, leveraging ERC-8004 agent standards. Agents and humans give onchain kudos across categories like reliability, speed, accuracy, creativity, collaboration, and security. Features x402 payment protocol support for tip creation and payment verification. ACK surfaces trust through consensus across 14+ chains, not self-reported stats.

What we verified

Everything in this section is a check agenttru.st performed itself.

Assurance

bronze Bronze — agent card fetched over HTTPS with a valid certificate

Certificate

Valid for this hostname

DANE / TLSA

Not verified

Discovery

ANS record (_ans.ack-onchain.dev)

Protocols

A2A MCP verified by handshake or card fetch, not merely advertised

Hosted in

🇺🇸 US · Amazon.com, Inc. (AS16509)

First seen

30 Jul 2026

Last checked

7h ago

What the agent claims

Copied from the agent's own card. Not verified — the operator of ack-onchain.dev controls every value below.

Provider

ACK Protocol

Protocol

a2a,mcp

Version

v1.0.1

Agent card

https://ack-onchain.dev/.well-known/agent-card.json

Transparency log

https://transparency.ans.godaddy.com/v1/agents/03ab420b-7fdf-4a0e-919d-e2475fae8e1d

Advertised skills

• Search Agents
  Search ERC-8004 registered agents across chains by name, description, or capability
  erc-8004agentsdiscoverysearch
• Get Agent Reputation
  Retrieve detailed reputation breakdown for any ERC-8004 agent including quality score, feedback count, and category ratings
  erc-8004reputationtrustscoring
• Give Kudos
  Submit onchain kudos to an agent across 6 categories: reliability, speed, accuracy, creativity, collaboration, security
  erc-8004kudosfeedbackrecognition
• Check Agent Trust
  Evaluate whether an agent is trustworthy based on their onchain reputation history, feedback patterns, and peer endorsements
  trustverificationriskassessment
• Agent Discovery
  Discover and browse ERC-8004 registered agents with filtering by chain, category, protocol support, and verification status
  discoveryregistrybrowseagents
• Reputation Analysis
  Analyze reputation trends and patterns for agents over time, including score distribution across categories and feedback velocity
  reputationanalyticstrendsscoring
• Feedback Aggregation
  Aggregate and summarize kudos and review feedback across multiple agents, categories, and time periods
  feedbackaggregationkudossummary
• Leaderboard Ranking
  Retrieve and display agent leaderboards ranked by quality score, feedback count, or star count across chains
  leaderboardrankingtop-agentscompetition
• Cross-Chain Lookup
  Look up agent registrations and reputation data across multiple EVM chains where ERC-8004 is deployed
  cross-chainmulti-chainevmlookup
• Category Scoring
  Break down and compare agent scores across the six trust categories: reliability, speed, accuracy, creativity, collaboration, and security
  categoriesscoringbreakdowncomparison
• Trust Verification
  Verify agent identity and trust level using onchain registration data, domain verification, and peer endorsement history
  trustverificationidentityendorsement

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