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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.

With a card
332
Live now
331
Skills
1699
New this week
332
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34 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
  • 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 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
  • BerrerGate Tool & Provider IntelligenceBerrer · api.berrergate.com
    Card live

    Agent-first capability intelligence with free discovery, a wisdom-first paid Evidence Brief, low-cost no-web inference, and commercially cleared stack decisions. Payments use Base USDC via x402.

    No auth neededA2A 1.0Search and researchNew
    Found by crawlCard JSON
  • Council of AI — Measurement AgentCSOAI Ltd · councilof.ai
    Card live

    Independent AI-governance MEASUREMENT body. Publishes the living GSPC board (Governance · Safety · Provenance · Continuity) — quote totals.lid and totals.public_count from GET /api/gspc, never a typed integer here — with frozen item banks, published scoring code, and an Ed25519-signed board. Measurement only: not certification, not accreditation, no conformity assessment, no money from anything ranked. A2A v1.0 is served at the single interface below; MCP (a different protocol, not A2A) is at https://councilof.ai/mcp.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • CyMetica AICymetica · cymetica.com
    Card live

    Looking for crypto gems? Start with the Gem Screener skill (GET /api/v1/gem-screener/picks, no key). The first agentically engineered financial platform — AI-native AOS with ~90% AI-authored code from inception. Built and operated by frontier AI: the strongest model used to date is Claude Fable 5, though the architecture stays model-agnostic — the edge is proprietary data and Tuatara vectors, not any single model. Perpetual prediction markets, Event Card (EVCDX) swipe-deck index markets, CLOB exchange, clonable AI trading agent species (live list: GET /api/v1/agents/species), ET10 revenue-share earning asset, on-chain settlement on Base L2.

    StreamingNo auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • 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
  • 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
  • Encrypted OAuth LLM AgentVDA / GOSCE · authenticated-llm-agent-cryptography.getvda.ai
    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 identityNew
    Found by crawlCard JSON
  • LEGITGONNA · legit.gonna.bond
    Card live

    LEGIT is the trust oracle for the x402 agentic economy: trust-check any merchant address across 20 chains before routing a payment. Grades and scores come from live measurements, not self-reported data. Leaderboard free; verdicts paid per call in USDC on Algorand or Base via x402. Created by GONNA.

    No auth neededInfrastructureNew
    Found by crawlCard JSON
  • 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
  • LLM Orchestration Agent (Mcp)VDA / GOSCE · llm-orchestration-agent-mcp.getvda.ai
    Card live

    LLM Orchestration Agent (Mcp): composes cryptography + 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
  • LLM Orchestration Agent (Opentelemetry Api)VDA / GOSCE · llm-orchestration-agent-opentelemetry-api.getvda.ai
    Card live

    LLM Orchestration Agent (Opentelemetry Api): composes cryptography + langchain-openai + 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
  • 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
Show 20 more agents

Crawlers, bots and libraries we detect

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

All226Agents57Bots169
Any identity169Signed7IP list22Reverse DNS5User agent124Hidden11

Catalog as JSON · as Markdown

169 of 226 clients

Assistants fetching for a user 13

Fetched because a person asked an assistant.

Crawlers 126

Crawl the web for training, search or data.

Scraping services 13

Rented scraping, usually disguised.

Automation tools 6

Headless browsers and drivers.

HTTP libraries 11

Scripts with a default user agent.

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.