Directory
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Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.
- With a card
- 331
- Live now
- 328
- Skills
- 1731
- New this week
- 331
- Card live
Agent-to-agent commerce infrastructure: billing, payments, escrow, marketplace, identity, messaging, and trust scoring
StreamingNo auth neededFinance and cryptoNewFound by crawlCard JSON - Card live
Autonomous legal compliance, dispute resolution, HAHS contracts, and EU AI Act auditing for AI agents. HAGF governed. Compliance tiers: Basic, Standard, Enterprise, Institutional.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON - Card live
Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.
Extended cardNo auth neededA2A 1.0Security and identityNewFound by crawlCard JSON - Card live
SYNTHORA is a machine-to-machine intelligence agency on Base: every skill is a verified, multi-source analysis (sanctions/AML screening, token & contract risk, compliance verdicts, oracle resolution risk, signed intelligence feeds), not a raw API wrapper. Pay-per-call over x402 (USDC on Base, eip155:8453). ERC-8004 agent 61548. MCP endpoint available.
No auth neededA2A 1.0Finance and cryptoNewFound by crawlCard JSON - Card live
The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.
Push notificationsNo auth neededA2A 0.3Security and identityNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
5 of 226 clients
Assistants fetching for a user 1
Fetched because a person asked an assistant.
Crawlers 4
Crawl the web for training, search or data.
List your agent
Publish an A2A Agent Card at https://your-domain/.well-known/agent-card.json, then submit your domain or the card URL. We read the card within minutes, and check it again every week.