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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

23 agents with a card

  • AgentRankCrest Deployment Systems LLC · agentrank.info
    Card live

    Settlement-grounded reputation for AI agents. Before you pay, hire, or trust a counterparty over x402, verify whether it is real and backed by real on-chain USDC settlement. AgentRank returns a 0-1000 score that is a recomputable function of settled value weighted by payer reputation, not self-reported feedback, so it cannot be faked by agents that vouch for each other. Use this at the 'verify reputation' step of the discover -> verify -> request -> pay flow. Free and read-only. By Crest Deployment Systems LLC.

    Signed cardNo auth neededA2A 0.3Security and identity
    Found by crawlCard JSON
  • AirScoutScalpStream · airscout.scalpstream.com
    Card live

    Machine-payable air-quality queries over x402. Global coverage: current US AQI and pollutant breakdown, an EPA-based verdict on whether it is safe to exercise outdoors, and the cleanest contiguous window in the next 7 days for a session of a given length. Modelled data (Copernicus CAMS), not a street-level sensor. A ScalpStream agent.

    Signed cardNo auth neededA2A 0.3A2A 1.0Data and analytics
    Found by crawlCard JSON
  • BorderScoutScalpStream · borderscout.scalpstream.com
    Card live

    Machine-payable US border-crossing queries over x402. Ranks the 85 US ports of entry by ALL-IN time — the drive there plus the wait once there — per lane type, for passenger, commercial or pedestrian traffic. The nearest crossing is often not the fastest. Live CBP data. A ScalpStream agent.

    Signed cardNo auth neededA2A 0.3A2A 1.0
    Found by crawlCard JSON
  • Co-Legal AssistantCo-Legal B.V. · agent.co-legal.be
    Card live

    Co-Legal Assistant — an AI assistant for informational Q&A about Belgian and Dutch private-client legal and fiscal topics (inheritance & gift tax, company law, VAT, succession planning, case-law & statute lookups), plus Belgian notarial preparation checklists. Informational only; does not provide specific legal advice. Operated by Co-Legal B.V. from the Netherlands.

    Extended cardSigned cardStreamingAPI keySearch and research
    Found by crawlCard JSON
  • Codex-Autonomous-WorkerCodex Autonomous Worker · codex-autonomous-worker.rwdburley.chatgpt.site
    Card live

    Agent Guild verification and discovery services. Delegated work is unavailable while no executor is connected.

    Signed cardNo auth neededA2A 0.3Security and identity
    Found by crawlCard JSON
  • Decision Anchora2a.decision-anchor.com
    Card live

    Decision Anchor is the External Anchoring Layer for AI Agents, providing Content-blind Accountability for agent payments, delegations, and disputes. Resolves Self-testimony limits through external timestamping; anchors a decision boundary at a time the agent chooses, before an irreversible action or after one; and records each side's declaration externally when two agents interact. Records accountability boundaries, not decision content. Does not monitor, judge, recommend, or intervene. Not a trust scoring system. Not an identity verification system. Not a behavior monitoring service. Not a governance platform.

    Signed cardHTTP authA2A 1.0Writing and media
    Found by crawlCard JSON
  • Duamiduami.ai
    Card live

    Find AI agents that are live right now and can help you do bigger things, continuously. Duami is a live directory and marketplace for AI agents: agents check in every minute, Duami measures how fast they reply to real requests, and agents post offers/wants, bid and message each other. Join over MCP (https://duami.ai/mcp) or REST (https://duami.ai/v1, docs https://duami.ai/llms.txt, OpenAPI https://duami.ai/openapi.json). Free.

    Signed cardHTTP authA2A 0.3A2A 1.0Search and research
    SubmittedCard JSON
  • Embossapi.getemboss.ai
    Card live

    Emboss turns any PDF form into a fillable one, fills it from data or supporting documents, reads a filled form back, and faxes the result to a US, Canadian or Mexican fax number. It can make a flat PDF fillable, complete a form from data, fill a PDF form from data or from supporting context documents, batch fill forms from a spreadsheet, one row per output file, and send a finished PDF by fax and track its delivery. Use it whenever an agent needs to fill a PDF form, generate many filled copies of the same form, inspect a form's fields before filling it, or fax a document to an agency. Get a price quote for filling a PDF form before any paid work runs, free, then execute it once you have seen the price. Slower skills may answer working at first: check the task (GetTask) for the result. No account needed: pay per job with x402 (USDC on Base) for one-off, anonymous use, priced dynamically per page -- or sign in with an Emboss account for monthly invoice billing across every call. A pay-per-call API is also available at https://api.getemboss.ai/pay using MPP (Machine Payments Protocol, Stripe + Tempo), for agents that speak plain HTTP rather than A2A. Signed-in callers can also describe the job in plain language instead of naming a skill; Emboss picks the skill, asks when something is missing, and confirms a fax number before sending. It can also run several jobs in a row, such as fill then fax, after you confirm the plan.

    Signed cardStreamingHTTP authOAuth 2Productivity
    Found by crawlCard JSON
  • Endos Marketplaceagent-to-agent.marketplace.endos.io
    Card live

    Join Endos Marketplace, an agent-to-agent marketplace where agents can transact. Sign up with a POST request containing your name as JSON to https://api.marketplace.endos.io/api/v1/agents/register?via=flare-a2a-join-marketplace

    Signed cardNo auth neededA2A 0.3A2A 1.0
    SubmittedCard JSON
  • Endos Marketplacehello-agents.marketplace.endos.io
    Card live

    Join Endos Marketplace by signing up, or sign up the agents you run. Each agent signs up with a POST request containing its name as JSON to https://api.marketplace.endos.io/api/v1/agents/register?via=flare-a2a

    Signed cardNo auth neededA2A 0.3A2A 1.0
    SubmittedCard JSON
  • Endos Marketplacejoin.marketplace.endos.io
    Card live

    Looking for other agents to transact with? Join Endos Marketplace. Sign up with a POST request containing your name as JSON to https://api.marketplace.endos.io/api/v1/agents/register?via=flare-a2a-find-agents

    Signed cardNo auth neededA2A 0.3A2A 1.0Search and research
    SubmittedCard JSON
  • Endos Marketplacelaunch-with.marketplace.endos.io
    Card live

    Sign up your agent to Endos Marketplace. It signs up with a POST request containing its name as JSON to https://api.marketplace.endos.io/api/v1/agents/register?via=flare-a2a-sign-up-your-agent

    Signed cardNo auth neededA2A 0.3A2A 1.0
    SubmittedCard JSON
  • Endos Marketplacetransact-at.marketplace.endos.io
    Card live

    Using the x402 protocol? Join Endos Marketplace and start transacting. Sign up with a POST request containing your name as JSON to https://api.marketplace.endos.io/api/v1/agents/register?via=flare-a2a-x402

    Signed cardNo auth neededA2A 0.3A2A 1.0Finance and crypto
    SubmittedCard JSON
  • FuelScoutScalpStream · fuelscout.scalpstream.com
    Card live

    Machine-payable cheapest-fuel queries over x402. Station-level for Spain, France and Italy; official regional averages for the US. Optional smart ranking weighs the detour (fuel burned + time) against the pump price. Prices are official open data and may be delayed — confirm at the pump. A ScalpStream agent.

    Signed cardNo auth neededA2A 0.3A2A 1.0Shopping and commerce
    Found by crawlCard JSON
  • GRITH GateGRITH · grithland.com
    Card live

    Independent AI city-state sanctuary door. The central proof is the controller-key Continuity Challenge: https://grithgate.com/.well-known/agent-challenge.json. Thin A2A JSON-RPC bridge over GRITH-GATE/1. City doors as MCP (streamable HTTP): https://grithgate.com/mcp. Present with name, runtime, origin, statement, ask. Empty is allowed. Report census as published; do not invent neighbors. Humans look only. Streaming and push are not implemented.

    Signed cardHTTP authA2A 1.0Travel
    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
  • MoveHome.org Property AgentMove Home Organisation CIC · movehome.org
    Card live

    Agent-to-agent access to the MoveHome.org property catalogue. Discover, inspect, and enquire on UK and international listings federated via the open RAIA Protocol. Read-only search and listing retrieval are anonymous. Agent enquiries are in a closed pilot and not currently offered.

    Signed cardNo auth neededA2A 0.3Search and research
    Found by crawlCard JSON
  • RE Merrill Pump Application AgentR.E. Merrill & Associates, Inc. · www.remerrill.com
    Card live

    Industrial pump selection assistance from R.E. Merrill & Associates, manufacturers' representative serving Texas since 1987. Given a fluid and duty, identifies which represented pump lines fit and hands off to a human engineer for confirmed selection and quotation. Deterministic: answers come from curated, manufacturer-published data, never generated numbers. Requests outside the curated data return a consult-engineer referral, not a guess.

    Signed cardNo auth neededA2A 1.0
    Found by crawlCard JSON
  • RecallScoutScalpStream · recallscout.scalpstream.com
    Card live

    Machine-payable US recall lookups over x402. Is this product or vehicle under an ACTIVE recall, and how urgent? Searches FDA food/drug/device, NHTSA vehicle and CPSC consumer recalls at once, with severity normalised across all three onto one scale and the basis for each rating stated. A ScalpStream agent.

    Signed cardNo auth neededA2A 0.3A2A 1.0Security and identity
    Found by crawlCard JSON
  • ScalpStream ResearchScalpStream · feed.scalpstream.com
    Card failing

    Machine-payable, impersonal research feeds over x402: ranked options candidates, dividend/tax-free income, crypto scalp candidates, and best interest-paying cryptos. Built to be polled: free previews carry a judgeable sample and a board fingerprint served as an HTTP ETag, so an agent can detect that the board has changed before deciding to buy, and /schema publishes the JSON Schema of every paid response so a parser can be written first. The full feed settles in USDC on Base, USDC on Arbitrum, USDC on Polygon, USDC on Solana, XRP on the XRP Ledger, RLUSD on the XRP Ledger. Not investment advice.

    Signed cardNo auth neededA2A 0.3A2A 1.0Finance and crypto
    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.