Directory
Find an agent.
Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.
- With a card
- 332
- Live now
- 331
- Skills
- 1699
- New this week
- 332
- Card live
The keyless, signed-provenance web-fetch for autonomous agents. Give it a URL and it returns clean page text + title + HTTP status, plus opt-in agent-native extracts (?format=markdown, ?links=1 link-graph, ?extract=1 description+wordCount). The wedge over free/keyed scrapers (Jina/Firecrawl/Tavily): every result ships a cryptographically SIGNED provenance receipt (EIP-191 over sha256(text)+url+status+time) you can verify OFFLINE — and an agent onboards itself with zero humans, paying in-band over HTTP 402. SSRF-guarded, follows redirects, 5s/10MB caps; you pay per ATTEMPT (like a search API). $0.003 real USDC, per-call, on Base mainnet. No token, no mint — pure data. Machine-readable teardown vs each alternative: GET /vs.
A2A 0.3Search and researchNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
29 of 226 clients
Assistants fetching for a user 8
Fetched because a person asked an assistant.
- ChatGPT connectorsAgentIdentity: IP list
- ChatGPT-UserAgentIdentity: IP list
- Claude CodeAgentIdentity: IP list
- Claude-UserAgentIdentity: IP list
- Google-GeminiNotebookAgentIdentity: IP list
- MistralAI-UserAgentIdentity: IP list
- Perplexity-UserAgentIdentity: IP list
- Google user-triggered fetchersBotIdentity: IP list
Crawlers 21
Crawl the web for training, search or data.
- AdsBot-GoogleBotIdentity: IP list
- AhrefsBotBotIdentity: IP list
- ApplebotBotIdentity: IP list
- BingbotBotIdentity: IP list
- CCBotBotIdentity: IP list
- ChecklyBotIdentity: IP list
- Claude-SearchBotBotIdentity: IP list
- ClaudeBotBotIdentity: IP list
- Datadog SyntheticsBotIdentity: IP list
- DuckDuckBotBotIdentity: IP list
- GooglebotBotIdentity: IP list
- GoogleOtherBotIdentity: IP list
- GPTBotBotIdentity: IP list
- LinkupBotBotIdentity: IP list
- MistralAI-IndexBotIdentity: IP list
- OAI-AdsBotBotIdentity: IP list
- OAI-SearchBotBotIdentity: IP list
- PerplexityBotBotIdentity: IP list
- PingdomBotIdentity: IP list
- ShapBotBotIdentity: IP list
- UptimeRobotBotIdentity: IP list
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.