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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.

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Auth Token MCP ServiceVDA / GOSCE · auth-token-mcp-service.getvda.ai
Card live
Auth Token MCP Service: composes bcrypt + langchain + mcp + opentelemetry-instrumentation-fastapi + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Auth Token MCP Traced ServiceVDA / GOSCE · auth-token-mcp-traced-service.getvda.ai
Card live
Auth Token MCP Traced Service: composes bcrypt + langchain + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Authenticated LLM AgentVDA / GOSCE · authenticated-llm-agent.getvda.ai
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 0.3CodingNew
Found by crawlCard JSON Compare
Authenticated LLM JWT AgentVDA / GOSCE · authenticated-llm-jwt-agent.getvda.ai
Card live
Authenticated LLM JWT Agent: composes bcrypt + openai + python-jose — crypto, llm-client, jwt via A2A + MCP.
- Crypto
- Llm Client
- Jwt
- +1
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Authenticated MCP AgentVDA / GOSCE · authenticated-mcp-agent-aed9d5.getvda.ai
Card live
Authenticated MCP Agent: composes bcrypt + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Authenticated MCP Traced AgentVDA / GOSCE · authenticated-mcp-traced-agent.getvda.ai
Card live
Authenticated MCP Traced Agent: composes bcrypt + cryptography + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Bcrypt and JOSE Token ServiceVDA / GOSCE · bcrypt-python-jose-d0e0d0.getvda.ai
Card live
Bcrypt and JOSE Token Service: composes bcrypt + python-jose — crypto, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Encrypted LangChain Session AgentVDA / GOSCE · bcrypt-cryptography-langchain-cor-027cf2.getvda.ai
Card live
Encrypted LangChain Session Agent: composes bcrypt + cryptography + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Encrypted LangChain Token AgentVDA / GOSCE · cryptography-langchain-core-mcp-07d652.getvda.ai
Card live
Encrypted LangChain Token Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
FastAPI Auth Token JWT ServiceVDA / GOSCE · fastapi-auth-token-jwt-service.getvda.ai
Card live
FastAPI Auth Token JWT Service: composes authlib + bcrypt + python-jose — oauth-oidc, crypto, jwt via A2A + MCP.
- Oauth Oidc
- Crypto
- Jwt
- +1
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
FastAPI Auth Token ServiceVDA / GOSCE · fastapi-auth-token-service.getvda.ai
Card live
FastAPI Auth Token Service: composes bcrypt + python-jose — crypto, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LLM Orchestration Agent (Cryptography)VDA / GOSCE · llm-orchestration-agent-cryptography.getvda.ai
Card live
LLM Orchestration Agent (Cryptography): composes cryptography + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LLM Orchestration Agent (Opentelemetry Instrumentation Fastapi)VDA / GOSCE · llm-orchestration-agent-opentelemetry-instrume-a529e4.getvda.ai
Card live
LLM Orchestration Agent (Opentelemetry Instrumentation Fastapi): composes cryptography + langchain-core + mcp + opentelemetry-instrumentation-fastapi + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LLM Orchestration JWT AgentVDA / GOSCE · llm-orchestration-jwt-agent.getvda.ai
Card live
LLM Orchestration JWT Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LLM Orchestration MCP AgentVDA / GOSCE · llm-orchestration-mcp-agent.getvda.ai
Card live
LLM Orchestration MCP Agent: composes cryptography + langchain + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LLM Orchestration Traced AgentVDA / GOSCE · llm-orchestration-traced-agent.getvda.ai
Card live
LLM Orchestration Traced Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LangChain Login and Token AgentVDA / GOSCE · authenticated-mcp-agent-langchain-core.getvda.ai
Card live
LangChain Login and Token Agent: composes bcrypt + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
OpenAI Login and Token AgentVDA / GOSCE · authenticated-mcp-agent-bcrypt.getvda.ai
Card live
OpenAI Login and Token Agent: composes bcrypt + mcp + openai + opentelemetry-sdk + python-jose — crypto, agent-protocol, llm-client, observability, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Password Hashing and JWT ServiceVDA / GOSCE · bcrypt-python-jose-1b8dd0.getvda.ai
Card live
Password Hashing and JWT Service: composes bcrypt + python-jose — crypto, jwt via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare

Crawlers, bots and libraries we detect

The catalog: 226 clients named by user agent, IP list or signature

All24 Agents13 Bots11

Any identity57 Signed19 IP list7 Reverse DNS0 User agent18 Hidden13

Catalog as JSON · as Markdown

13 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.

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.