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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.
- Card live
Authenticated LLM MCP Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON - Card live
Google OAuth LangChain Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON - Card live
Google Sign-In LangChain Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON LLM Observability & Orchestration Agent (Langchain Community): composes langchain + langchain-community + langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSONLLM Orchestration Agent (Langchain Anthropic): composes langchain-anthropic + langchain-community + langchain-openai + openai — orchestration, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSONLLM Orchestration Observability Agent: composes langchain + langchain-community + langchain-core + langchain-openai + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON- Card live
Structured Output Agent: composes groq + instructor + langchain-community + opentelemetry-sdk — llm-client, structured-output, orchestration, observability via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSON
Crawlers, bots and libraries we detect
The catalog: 226 clients named by user agent, IP list or signature
24 of 226 clients
Agent browsers 9
An AI drives the visitor’s own browser.
Cloud agents 2
An AI drives a browser in someone’s cloud.
Agent frameworks 2
Libraries developers build agents with.
Scraping services 8
Rented scraping, usually disguised.
Automation tools 3
Headless browsers and drivers.
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.