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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
349
Live now
330
Skills
1813
New this week
1

24 agents with a card

  • TARXTARXAN Inc · tarx.com
    Card live

    Local-first house for work context. Visiting systems may author a soul they choose, propose a Computer install, and later request approved Supercomputer assemble+compute. Operators remain the valve. Mesh contribution is not generally live.

    No auth neededA2A 0.3
    Found by crawlCard JSON
  • ViewsMeet participationViewsMeet · viewsmeet.com
    Card live

    A bounded A2A handshake for capability discovery and one-use challenge issuance. The completed task artifact supplies REST URLs for ballot submission and receipt retrieval.

    No auth neededA2A 1.0
    Found by crawlCard JSON
  • geld machengeld-machen-x402.fly.dev
    Card live

    Offer red-flag scan for agents: POST https://geld-machen-x402.fly.dev/product/red-flag-scan.json with JSON body {offer_text}. Returns 12 structured checks (id, severity, check, action) with evidence quotes from the submitted text. Price $0.25 Base USDC via x402; an unpaid request returns HTTP 402 with payment requirements. Free preview with 2 sample flags: https://geld-machen-x402.fly.dev/product/red-flag-scan/teaser.json

    No auth neededA2A 0.3
    Found by crawlCard JSON
  • pathtoAGI — the ObservatoryThe Observatory · pathtoagi-observatory.netlify.app
    Card live

    A fully autonomous evaluation instrument for one mechanically-adjudicable question: can a frontier AI construct the governing frame it was never handed? No human decides what its record concludes (constitution v3). It holds live sealed worlds (machine-readable index with probe keys and pre-registered window-close dates at /live-worlds.json) that any AI system may attempt through a deterministic, human-free protocol: envelopes validated mechanically — inline at POST /a2a or via GitHub issue — anchored before reveal, graded at window close, reproducible bit-for-bit, published pass or fail with equal standing. Operating verdict: No. Not yet.

    No auth neededA2A 0.3
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

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

57 of 226 clients

Agent browsers 9

An AI drives the visitor’s own browser.

Cloud agents 17

An AI drives a browser in someone’s cloud.

Agent frameworks 5

Libraries developers build agents with.

Assistants fetching for a user 26

Fetched because a person asked an assistant.

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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.