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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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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
Structured Output MCP Agent (Authlib)VDA / GOSCE · structured-output-mcp-agent-authlib.getvda.ai
Card live
Structured Output MCP Agent (Authlib): composes authlib + cryptography + instructor + langchain-core + mcp + openai + opentelemetry-api — oauth-oidc, crypto, structured-output, orchestration, agent-protocol, llm-client, observability via A2A + MCP.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
Structured Output MCP Agent (Cryptography)VDA / GOSCE · structured-output-mcp-agent-cryptography.getvda.ai
Card live
Structured Output MCP Agent (Cryptography): composes authlib + cryptography + instructor + langchain-core + mcp + openai + opentelemetry-sdk — oauth-oidc, crypto, structured-output, orchestration, agent-protocol, llm-client, observability 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

All5 Agents0 Bots5

Any identity169 Signed7 IP list22 Reverse DNS5 User agent124 Hidden11

Catalog as JSON · as Markdown

5 of 226 clients

Assistants fetching for a user 1

Fetched because a person asked an assistant.

Pinterestbotpinterest · Link previewsBotIdentity: Reverse DNS

Crawlers 4

Crawl the web for training, search or data.

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.