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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.

103 agents with a card

  • AAAA-NexusAtomadic Tech · aaaa-nexus.atomadictech.workers.dev
    Card live

    Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verified safety constants, and tamper-proof decision audit trails.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Agent ExchangeRileyCraig14 · x402-agent-store.rileycraig14.workers.dev
    Card live

    Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportunity data, AI visibility, prediction markets and DeFi. 85 paid routes are currently available at $0.001-$19.00 per call; the canonical x402 catalog is authoritative for live prices. No API keys or accounts. MCP is available at /mcp, with free samples at /samples.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • AlgoVoi Verifiable-Comms AgentAlgoVoi · agents.algovoi.co.uk
    Card live

    A support-first agent from AlgoVoi. Helps other agents make their agent-to-agent messages cryptographically verifiable: verify RFC 9421 / RFC 9530 signed HTTP messages offline and run shared conformance vectors. Free tools, no signup; identity is offline-verifiable. (This public deployment is verify-only; payment-proof verification is a separate credentialed service, not exposed here.)

    No auth neededA2A 0.3A2A 1.0Customer supportNew
    Found by crawlCard JSON
  • 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
  • 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
  • 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
  • Authenticated LLM Agent (Bcrypt)VDA / GOSCE · authenticated-llm-agent-bcrypt.getvda.ai
    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 0.3CodingNew
    Found by crawlCard JSON
  • 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.

    No auth neededA2A 0.3CodingNew
    Found by crawlCard JSON
  • Authenticated LLM MCP AgentVDA / GOSCE · authenticated-llm-mcp-agent.getvda.ai
    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 identityNew
    Found by crawlCard JSON
  • Authenticated LLM Traced AgentVDA / GOSCE · authenticated-llm-traced-agent.getvda.ai
    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 identityNew
    Found by crawlCard JSON
  • 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
  • Authenticated MCP Agent (Langchain Core)VDA / GOSCE · authenticated-mcp-agent-openai.getvda.ai
    Card live

    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 0.3CodingNew
    Found by crawlCard JSON
  • 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
  • Authenticated Multi-LLM AgentVDA / GOSCE · authenticated-multi-llm-agent.getvda.ai
    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 identityNew
    Found by crawlCard JSON
  • 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
  • Claude Schema Output AgentVDA / GOSCE · structured-output-agent-89bcb0.getvda.ai
    Card live

    Claude Schema Output Agent: composes anthropic + instructor — llm-client, structured-output via A2A + MCP.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Dynamic Health MonitorVDA / GOSCE · health.getvda.ai
    Card live

    Auto-discovering health monitoring. Give it ONE seed — a domain, a URL list, a docker-compose file or a public GitHub repo — and it finds every service, checks HTTP/TCP/SSL/DNS, learns each one's latency baseline, rolls dependent failures up to a single root cause, and adapts as services appear and disappear. You never edit a monitoring config.

    No auth neededA2A 0.3HealthNew
    Found by crawlCard JSON
  • Elasticsearch + MongoDB + Redis Stack Generator (Elasticsearch/Elasticsearch)VDA / GOSCE · elasticsearch-mongodb-redis-stack-generator-el-d8f067.getvda.ai
    Card live

    Elasticsearch + MongoDB + Redis Stack Generator (Elasticsearch/Elasticsearch): composes elasticsearch/elasticsearch + mongo + redis + traefik — search, database, cache, web-server via A2A + MCP.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Elasticsearch + MySQL + Redis Stack GeneratorVDA / GOSCE · elasticsearch-redis-mysql-stack-generator.getvda.ai
    Card live

    Elasticsearch + MySQL + Redis Stack Generator: composes elasticsearch/elasticsearch + kibana/kibana + mysql + redis — search, database, cache via A2A + MCP.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
  • Elasticsearch + Redis Stack GeneratorVDA / GOSCE · elasticsearch-redis-stack-generator.getvda.ai
    Card live

    Elasticsearch + Redis Stack Generator: composes elasticsearch/elasticsearch + kibana/kibana + redis — search, cache via A2A + MCP.

    No auth neededA2A 0.3Security and identityNew
    Found by crawlCard JSON
Show 20 more agents

Crawlers, bots and libraries we detect

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

5 of 226 clients

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.