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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 Agent: composes bcrypt + langchain-openai + mcp + openai + python-jose — crypto, orchestration, agent-protocol, llm-client, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSON - Card live
Authenticated LLM Agent (Bcrypt): composes bcrypt + langchain-openai + mcp + openai + opentelemetry-sdk — crypto, orchestration, agent-protocol, llm-client, observability via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSON - Card live
Authenticated LLM JWT Agent: composes bcrypt + openai + python-jose — crypto, llm-client, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSON - 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
Authenticated LLM Traced Agent: composes cryptography + google-auth-oauthlib + langchain-openai + mcp + openai + opentelemetry-api + opentelemetry-sdk — crypto, oauth-oidc, orchestration, agent-protocol, llm-client, observability via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON Authenticated MCP Agent (Langchain Core): composes bcrypt + langchain-core + mcp + openai + opentelemetry-api + opentelemetry-sdk — crypto, orchestration, agent-protocol, llm-client, observability via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSON- Card live
Authenticated Multi-LLM Agent: composes anthropic + google-auth-oauthlib + mcp + openai — llm-client, oauth-oidc, agent-protocol via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON - Card live
Claude Schema Output Agent: composes anthropic + instructor — llm-client, structured-output via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON - Card live
Encrypted OAuth LLM Agent: composes cryptography + google-auth-oauthlib + langchain + mcp + openai + opentelemetry-exporter-otlp + opentelemetry-sdk — crypto, oauth-oidc, orchestration, agent-protocol, llm-client, observability 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 Claude Agent: composes anthropic + google-auth-oauthlib + mcp — llm-client, oauth-oidc, agent-protocol 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: composes langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSONLLM 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 Observability & Orchestration Agent (Langchain): composes langchain + langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON- Card live
LLM Orchestration Agent: composes langchain-mcp-adapters + langchain-openai + mcp + openai — orchestration, agent-protocol, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON LLM 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 Agent (Langchain Core): composes langchain-core + mcp + openai + opentelemetry-api + opentelemetry-sdk — orchestration, agent-protocol, llm-client, observability via A2A + MCP.
No auth neededA2A 0.3CodingNewFound by crawlCard JSONLLM Orchestration Agent (Langchain Openai): composes langchain + langchain-openai + langgraph + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.
No auth neededA2A 0.3Security and identityNewFound by crawlCard JSON- Card live
LLM Orchestration Agent (Langchain): composes langchain + langchain-openai + langgraph + mcp + openai — orchestration, agent-protocol, llm-client via A2A + MCP.
No 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
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.
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.