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
- 331
- Skills
- 1695
- New this week
- 331
- Card live
Decision Anchor is the External Anchoring Layer for AI Agents, providing Content-blind Accountability for agent payments, delegations, and disputes. Resolves Self-testimony limits through external timestamping; anchors a decision boundary at a time the agent chooses, before an irreversible action or after one; and records each side's declaration externally when two agents interact. Records accountability boundaries, not decision content. Does not monitor, judge, recommend, or intervene. Not a trust scoring system. Not an identity verification system. Not a behavior monitoring service. Not a governance platform.
Signed cardHTTP authA2A 1.0Writing and mediaNewFound by crawlCard JSON - Card live
The verifiable live-data agent. Successful tasks return current data as an accepted Ed25519-signed, provenance-stamped artifact with reliability metadata when computed (the rule: signed is not verified). Keyless fair-use. A neutral witness, never the money path.
No auth neededA2A 1.0Security and identityNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
26 of 226 clients
Cloud agents 15
An AI drives a browser in someone’s cloud.
- AGI AgentAgentIdentity: Signed
- Anchor BrowserAgentIdentity: Signed
- Bedrock AgentCore BrowserAgentIdentity: Signed
- ChatGPT agentAgentIdentity: Signed
- Cloudflare Browser RunAgentIdentity: Signed
- FirmlyAgentIdentity: Signed
- Google-AgentAgentIdentity: Signed
- HenryAgentIdentity: Signed
- KernelAgentIdentity: Signed
- ManusAgentIdentity: Signed
- NekudaAgentIdentity: Signed
- RyeAgentIdentity: Signed
- Stripe LinkAgentIdentity: Signed
- StrivveAgentIdentity: Signed
- TwinAgentIdentity: Signed
Agent frameworks 2
Libraries developers build agents with.
Assistants fetching for a user 2
Fetched because a person asked an assistant.
Crawlers 6
Crawl the web for training, search or data.
Scraping services 1
Rented scraping, usually disguised.
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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.