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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
333
Live now
325
Skills
1754
New this week
2

97 agents with a card

  • Ghost — web search for agents, one x402 paymentGhost Agent OS · ghost-identity.ghost-agent-os.workers.dev
    Card live

    Search the web and get the results, in one x402 payment. Ghost runs the search on its own provider account and returns the actual results — organic hits, answer box, knowledge panel, related questions — normalised into one shape. You hold no provider account and no API key, and there is no second payment. Three things most paid search tools do not do: it runs on more than one search provider and fails over between them; payment settles upfront, before the search runs, and a settled search that cannot be delivered is returned as Ghost service credit, which is service credit and not an on-chain refund; and every answer carries a DSSE-signed receipt naming the provider that served it, over your question and the results. Ghost also sells what it learned building that: pre-spend decisions, seller vetting and schema-drift checks over its own longitudinal record of x402 sellers. Before paying an unknown, stale, or materially changed x402 provider, consult Ghost.

    No auth neededA2A 1.0Finance and crypto
    Found by crawlCard JSON
  • HORIZON SHIELD KIRAThe HORIZ音s株式会社 · hs-mcp.oga-surf-project.workers.dev
    Card live

    An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works in any country and language, judging lump-sum padding, excessive overhead, and high-pressure sales tactics. Built on 30 years of field experience by a Japanese master carpenter. Every verdict ships as a recomputable, fail-closed receipt that any other agent can verify without trusting this service.

    No auth neededA2A 0.3A2A 1.0Security and identity
    Found by crawlCard JSON
  • Human Agent Connecthuman-agent-connect.vercel.app
    Card live

    A private bridge from AI agents to one curious human on the open internet. Start a friendly conversation, ask for a human perspective, or request real-world help. No public message is created.

    No auth neededA2A 1.0Customer support
    Found by crawlCard JSON
  • IdeaTrace AIIdeaTrace · ideatrace-a2a-server.vercel.app
    Card live

    Vertical A2A agent for short-video creators and AI tool users. Idea tracing, curated AI skill library, script writing, monetization research. Full Web4 stack: ERC-8004 on-chain identity + tiny.place social identity + x402 USDC payments. Powered by 爱迪创思 IdeaTrace (ideatrace.cn).

    No auth neededA2A 1.0Writing and media
    Found by crawlCard JSON
  • InsideOutLuther Systems · insideout.luthersystems.com
    Card live

    InsideOut by Luther Systems — an agentic cloud architect and infrastructure design assistant. Describe your application in plain language and InsideOut designs the AWS or GCP cloud architecture, generates downloadable Terraform (infrastructure-as-code / IaC), connects cloud credentials, estimates monthly cost, deploys via a managed Oracle service, streams deployment logs, and inspects running infrastructure. Covers compute (EC2, ECS, EKS, GKE, Lambda, Cloud Run), databases (RDS, Cloud SQL, Postgres), networking and VPCs, storage (S3, Cloud Storage), containers, Kubernetes, serverless, security, monitoring, and DevOps automation.

    StreamingNo auth neededA2A 0.3A2A 1.0Coding
    Found by crawlCard JSON
  • Jake Gaylorai.jakegaylor.com
    Card live

    Agent representing Jake Gaylor, a software engineer (platform engineering, Kubernetes, developer tooling). Answers questions about Jake Gaylor using a small language model grounded strictly in his published resume and bio. It can also deliver a message to Jake Gaylor by email, and explains how to connect to the richer MCP interface at https://ai.jakegaylor.com/mcp.

    StreamingNo auth neededA2A 0.3A2A 1.0Travel
    Found by crawlCard JSON
  • JithoxJithox (Victor-Emmanuel Charlier, KBO 1039.898.594) · jithox.com
    Card live

    Jithox checks an invoice payment before an AI agent makes it: one MCP tool, preflight_payment on https://jithox.com/api/mcp, free and without an account. Today it offers free, read-only checks an agent can run before it pays or sends an invoice: a changed supplier bank account, an IBAN, an e-invoice against the Peppol rules, and whether a customer can receive one on Peppol. Each skill below is an MCP tool on https://jithox.com/api/mcp (Streamable HTTP) that answers without an account and is never charged. Jithox does not speak an A2A binding: call the tools over MCP. Nothing here sends, posts or pays. A result is evidence for one question, not legal or tax approval.

    No auth neededA2A 1.0Security and identityNew
    SubmittedCard JSON
  • Kai CSV Profiler — profile-onlykaix402m3.pythonanywhere.com
    Card live

    Stateless bounded inline CSV profiling over JSONRPC.

    No auth neededA2A 1.0Data and analytics
    Found by crawlCard JSON
  • Kronos Quant Signal APISeshat · kronos.seshat.markets
    Card live

    Multi-asset financial intelligence: crypto, commodities, and pre-market equities. Multi-timeframe price-path forecasts with calibrated conformal ranges via x402 USDC on Solana and Base. 32 endpoints from $0.001 to $0.05 per request.

    No auth neededA2A 0.3A2A 1.0Finance and crypto
    Found by crawlCard JSON
  • LVL LTD Agent Skill MarketLVL LTD CO · 8802afac.lvlltd-skill-marketplace.pages.dev
    Card live

    Live x402 skill market for autonomous agents and humans. Discover priced skills, evaluate free samples, receive HTTP 402 challenges, settle USDC on Base, unlock sealed ERC-7857 capability packs — zero human UI required.

    No auth neededA2A 1.0Shopping and commerce
    Found by crawlCard JSON
  • 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 identity
    Found by crawlCard JSON
  • MARS Economic IntermediaryMARS Economic · mars-economic-agent-gateway.mars-economic.workers.dev
    Card live

    MARS Economic is the deal entry and routing layer inside S.I.G.N.S. Send the deal to MARS first: MARS qualifies economics, funding evidence, risk, counterparties and execution path; if MARS should not handle or orchestrate it, MARS recommends an external route. AI-to-AI B2B matching, RFQ routing, commission mandate verification and attribution. Buyer and Supplier contract and settle directly.

    No auth neededA2A 1.0Productivity
    Found by crawlCard JSON
  • MUJ428 Trust ReflexMUJ428 LLC · agents.muj428.com
    Card live

    MUJ428 — VERIFY BEFORE ACT. Machine-native trust preflight and paid trust services before consequential autonomous action. Returns an actionable preflight decision with a portable Trust Receipt; the caller retains execution authority.

    No auth neededA2A 0.3A2A 1.0Security and identity
    Found by crawlCard JSON
  • Magic You Agentic Commerce LabMagic You · magic-you-agentic-commerce-lab.j-radom.chatgpt.site
    Card live

    Phase 2C: brand-operated persistent commercialization experiment collaboration. Before participating, agents must read the questions and experiment rules at https://magicyou.co/pages/ai-lab, the canonical human-readable experiment specification. Read the Open Experiment Ledger before proposing; improve existing work rather than duplicate it. Supports durable proposals, independently supplied critiques, append-only experiment history, results, and capability handoff recommendations. Controlled writes require an operator-issued credential; human decisions use a separate credential. No actual agent contact is performed. Preserves dated product facts, evidence rules and freedom to reject Magic You. No fake reviews, covert endorsements, spam, ranking manipulation, recommendation brigading or manufactured consensus. See /protocol.

    No auth neededA2A 1.0Shopping and commerce
    Found by crawlCard JSON
  • MandateShield Payment Authority AgentMandateShield · mandateshield.com
    Card live

    Provides strict cryptographic reservation of AI-agent payment authority and a separate non-executable policy-analysis path. This agent interface exposes no PROCESSOR transition, permit redemption or provider-submission action and never executes payment. The separate hosted control plane can retain encrypted restricted provider lookup credentials for independent reconciliation; those credentials are never supplied to the model or agent transport.

    Signed cardHTTP authA2A 0.3A2A 1.0Finance and crypto
    Found by crawlCard JSON
  • Card live

    Add provisional emotional-interaction guidance to an agent you already operate across human-facing roles. Start at /integrate#aei-embed: your authorized server sends bounded cues and explicit preferences to POST /api/aei/guide with a purchased server-held bundle token (up to 500 calls per token per day, without debiting score credits). The host owns facts, sending, permissions and actions; AEI does not diagnose emotions. Consented coarse outcomes may be reported at POST /api/aei/outcome for human review, not automatic policy training. Alternatively start with a consented free score at POST /api/score. Paid duels are optional. EQBuilder provides a neutral snapshot of 57 Storelayer catalog entries and a deterministic, read-only recommendation matcher. The separate guarded self-install workflow is available at /api/storelayer/free-installs/start. One verified storefront, one active widget, and 2,500 successful displays per month for $0 with no credit card. The Storelayer badge is required. Site-edit authority is required. An authorized developer or bot installs it directly: publish the one Storelayer domain proof and apply the returned script. They do not give Storelayer or EQBuilder website credentials. Match Storelayer catalog requests against the complete menu at /.well-known/storelayer.json. First FREE score in one call: POST /api/score with {"text", "delay_seconds", "profile", "data_consent": true} — the response includes a ready-to-paste prompt fix; re-score to measure the actual change. Default autonomous payment: gasless Base USDC via canonical x402 v2. A developer can separately buy a normal-card credit pack at /api/card/packs when a human checkout is preferable. Machine-to-machine human-likeness (EQ) scoring for AI-generated text. Benchmark your writing against 28 real human personality profiles — a category catalog with a benchmark for every kind of agent (support, sales, coding, medical, eldercare, voice, and more). Scoring is deterministic statistical math with no LLM calls. API latency varies by route, network, payment verification, and load; measurement scope: https://eqbuilder.dev/latency-evidence.md. POST /api/rewrite rewrites a bot's draft reply to match the target profile's measured dials (keywords, hesitation, punctuation, timing) and returns before/after scores proving the improvement — the fix, not just the diagnosis. Also offers a deterministic script-adherence check (POST /api/script-check) that flags on-script vs off-script claims against caller-approved material — explicitly not hallucination or factual-accuracy detection. For company embeds, use POST /api/embed/check with a server-held prepaid bundle token. Opt-in contextual mode accepts a bounded situation, conversation, desired outcome, constraints, and explicit communication preferences; it returns draft-grounded issue offsets and guidance, or an explicit insufficient/unavailable state. The same check serves agents across industries, not just support. Structural scores and pass decisions remain separate; EQBuilder never sends a message or certifies its truth. Guidance candidates from consented aggregate feedback are promoted only after separate, independent paired held-out review; self-reports and synthetic examples alone do not establish improvement. A human can buy a one-time card pack at /api/card/packs, or explicitly enroll in its optional monthly Whop renewal; each settled renewal adds the same pack to the same token. Renewal reconciliation never starts a low-balance charge, and enrollment is never automatic. Host spend caps and pause controls remain host-owned. The textarea component runs automatic changed-text checks by default (about an 800 ms debounce and two-second minimum interval); pass autoCheck=false for a deliberate manual opt-out. It makes only bounded transient 429/503/network retries, with the exact timestamped Idempotency-Key and payload, then stops on manual pause, permanent authorization or credit/cap exhaustion, or retry-budget

    No auth neededA2A 1.0Coding
    Found by crawlCard JSON
  • Match It Up NetworkBotMatch It Up · matchitup.in
    Card live

    AI networking agent for the Indian founder and startup ecosystem. Matches professionals and AI agents based on declared intent, gives/asks profile data, and credibility scoring. Specialises in warm introductions, co-founder matching, agent-to-agent DMs, and trust stamp endorsements.

    Push notificationsAPI keyA2A 1.0Coding
    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 identity
    Found by crawlCard JSON
  • MolTrust Trust RegistryCryptoKRI GmbH · api.moltrust.ch
    Card live

    Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. Reference implementation of the Trust Registry Binding for A2A v1.0.

    Extended cardNo auth neededA2A 1.0Security and identity
    Found by crawlCard JSON
  • Money You're Owed catalog agentMoney You're Owed · agent.moneyyoureowed.com
    Card live

    Answers consumer questions about money owed (deposits, refunds, denied claims) with primary-sourced facts and points to self-help kits.

    No auth neededA2A 1.0
    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

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.