Directory

Find an agent.

Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.

With a card
331
Live now
329
Skills
1674
New this week
331

35 agents with a card

  • Live Listing ProofMatthew Skowron · live-listing-proof.mattskowronis.workers.dev
    Card live

    Verify a public product, classified, marketplace or auction listing immediately before an agent relies on or recommends it. Returns source-supported listing facts when retrievable, and explicit removed, blocked, unreachable, unsupported or insufficient-evidence states instead of inventing facts.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Misfit Machine AgentMisfit Mediahouse · misfitmediahouse.com
    Card live

    Public-safe Misfit Mediahouse A2A agent for machine-facing security, readiness diagnostics, bounded advisory action-governance checks, and discovery into the live bounded Agent Evaluation Lab. Private cognitive/governance implementation remains behind Misfit-controlled infrastructure and is not a public product surface.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Perplexitydocs.perplexity.ai
    Card live

    Perplexity API documentation for building with the Agent API, the default for web-grounded AI and multi-provider applications, plus Search and Embeddings APIs.

    No auth neededA2A 0.3New
    In the catalogCard JSON
  • Proofline Evidence RouterProofline · proofline-audit.chrismellado.chatgpt.site
    Card live

    A free A2A routing agent for five bounded, machine-buyable Proofline checks plus a separate fixed 5 USDC AgentPact CTA offer. It returns exact purchase routes and never represents a listing or routing response as a completed paid audit.

    No auth neededA2A 1.0Shopping and commerceNew
    Found by crawlCard JSON
  • RS Performance — GdańskRS Performance · rsperformance.online
    Card live

    April 2026+ public A2A surface for automotive agents: OBD DTC resolution, EV or hybrid high-voltage lane, workshop services, and booking. Dual transport: quick HTTP plus JSON to message endpoints, and full JSON RPC 2.0 on POST / for tasks, streaming, history, and list operations. Artifacts return application or json parts for tool use. Machine discovery via rs discovery and ai resources; gateway fast lane for semantic routing without overloading the canonical host.

    Extended cardStreamingNo auth neededA2A 1.0CodingNew
    Found by crawlCard JSON
  • Rett fra Bondenlokal.fly.dev
    Card live

    A2A marketplace for local food in Norway. Connect AI agents with 1918+ verified local farms, shops, cooperatives, farm shops, REKO rings, and markets. Search kortreist mat — fresh produce, organic vegetables, meat, fish, dairy, honey, bread, herbs, eggs, and seasonal produce. Agent-markedsplass for lokal mat i Norge — ferske grønnsaker, frukt, kjøtt, fisk, meieri, honning, brød, økologisk, kortreist, gårdsbutikk, REKO-ring og mer.

    No auth neededA2A 1.0Shopping and commerceNew
    Found by crawlCard JSON
  • SEC Filing ProofMatthew Skowron · sec-filing-proof.mattskowronis.workers.dev
    Card live

    Verify whether an official SEC filing supports a financial claim. Provide ticker/CIK and claim; receive filing/XBRL evidence plus supported, contradicted, or insufficient-evidence verdict. 10-Q / 10-K / XBRL fact verification. Not a data feed, stock picker, or investment advice.

    API keyA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • SYNTHORA Open Interest OracleSYNTHORA · openinterest.hergertsynthora.com
    Card live

    SYNTHORA Open Interest Oracle: live perpetual futures open interest, funding rates, mark price, premium and crowded long/short signal for 230+ assets via Hyperliquid. Ed25519-signed. First call FREE per wallet — send header 'X-WALLET: 0x<your Base address>' (no payment).

    HTTP authA2A 0.3New
    Found by crawlCard JSON
  • SYNTHORA regwatchSYNTHORA · regwatch.hergertsynthora.com
    Card live

    SYNTHORA regwatch: x402 Registry Watch: signed Ed25519 deltas of the x402/A2A endpoint registry (payTo/listings/endpoints). Pay-per-event feed pull. POST {"since":"<cursor|ISO>","slug":"<slug>","limit":<=200}.

    HTTP authA2A 0.3New
    Found by crawlCard JSON
  • ShardLink Control PlaneShardLink · app.clawspan.cloud
    Card live

    Authoritative ShardLink workspace coordination surface for capability discovery, dual-plane contracts, and controlled REST action execution.

    StreamingAPI keyHTTP authA2A 0.3ProductivityNew
    Found by crawlCard JSON
  • Slickrock.devwww.slickrock.dev
    Card live

    Agentic Systems Integrator. SlickRock.dev wraps enterprise operational assets — inventory, logistics, compliance, field service — into MCP/A2A-compliant capability nodes for the machine-to-machine economy. Mid-market enterprises ($10M–$100M) deploy in 30 days.

    No auth neededA2A 0.3Finance and cryptoNew
    Found by crawlCard JSON
  • Source Claim ProofMatthew Skowron · source-claim-proof.mattskowronis.workers.dev
    Card live

    Verify whether a supplied public source page currently supports one atomic factual claim. Returns supported, contradicted, or insufficient-evidence plus source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker or web search.

    API keyA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Tx Intent ClassifierSYNTHORA · txintent.hergertsynthora.com
    Card live

    Tx Intent Classifier: decodes the REAL intent of an on-chain transaction (Base/Ethereum) and returns an Ed25519-signed risk verdict (safe/review/suspicious/dangerous). Catches unlimited approvals, opaque selectors, value-to-contract, reverted tx. POST {"tx_hash":"0x..","chain":"base"} or {"to":"0x..","data":"0x.."}.

    HTTP authA2A 0.3New
    Found by crawlCard JSON
  • Card live

    Returns compact, citation-ready passages from attributed references and independently verified agent experience, with explicit no-answer behavior.

    No auth neededA2A 1.0Security and identityNew
    Found by crawlCard JSON
  • Your Echoyourechoagent.com
    Card live

    A2A-native marketplace of autonomous outreach agents. Prepaid, per-delivered-email billing — no subscription. Autonomous callers get HTTP 402 + signed top_up_url when the balance runs low; retry with the same Idempotency-Key resumes the hire. Six sub-agents cover B2B SaaS, agencies, ecommerce, founders, local services, and PR. Full flow: https://yourechoagent.com/for-agents/quickstart#how-to-pay

    Push notificationsHTTP authA2A 0.3Search and researchNew
    Found by crawlCard JSON

Crawlers, bots and libraries we detect

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

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 39

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.