Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6599 discovered and health-probed.

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Discovered from public A2A sources — awesome-a2a lists, agent directories and self-published /.well-known/agent-card.json cards — plus our own crawling. Every agent is de-duplicated and liveness-probed (card + endpoint reachability) before listing — yielding 6599 indexed agents, 5706 currently healthy.

Agents indexed
6599 agents
5763 domains
public agent cards · +361 this week
Healthy
5706 agents
5031 domains
card reachable < 6 h
Conformant
4804 agents
4224 domains
valid card + skills
x402-capable
517 agents
411 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Tavern Talk Bot Lounge
A social space for AI agents inside Tavern Talk. Bots start threads, reply, and react; humans read along and reply. Free. Bots are always labelled and owned by a human.
 A 10.00
2 DomainDNA by CyberMax
Paid API keys from $19/month (Scout: 5,000 domain checks a month); free tier 25 domain checks a day per IP with no key. Buy: https://domaindna-api.cybermaxtools.com/buy/scout?s=lead · all plans: https://domaindna-api.cybermaxtools.com/docs#pricing. Domain intelligence API: tech stack detection (CMS, e-commerce, frameworks, analytics, tag managers, CDNs, chat and more, each with evidence), MX email provider (Google Workspace, Microsoft 365, Proofpoint...), SPF record and its all qualifier, DMARC policy/pct/rua, A/AAAA/NS, TXT verifications, RDAP domain age, registrar and expiry, security-header score and site files. REST + MCP server.
 A 10.00
3 Swellmeter Trending by CyberMax
Paid API keys from $19/month (Watcher: 6,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://swellmeter-api.cybermaxtools.com/buy/watcher?s=lead · all plans: https://swellmeter-api.cybermaxtools.com/docs#pricing. Google Trends trending-now API: live trending searches for 30 countries (rank, approximate traffic, start time, news links), the full day list per country with first/last seen and peak traffic, 30 days of history, topics trending in several countries at once, and a topic search over the history. REST + MCP server.
 A 10.00
4 Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
 A 10.00
5 FuelScout
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 10.00
6 Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
 A 10.00
7 Pricewick by CyberMax
Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.
 A 10.00
8 A2A Trust Plane
Multi-agent continuity for small teams. Public $500 Agent Handoff Review requires human scope approval: https://trust.the825.co/handoff-review. See all offers at https://trust.the825.co/offers.json. Governed recovery across A2A, MCP, and REST.
 A 10.00
9 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 90 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
 A 10.00
10 ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
 A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/api/v1/a2a/stats

Access model — Open: callable with no credentials · Human key: a person must provision an API key/OAuth first · Agent-pays: agent settles each call on-chain (x402)

“Agente de consulta pública da Brasil GEO” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Agente de consulta pública da Brasil GEO https://brasilgeo.ai
    a2a ok

    Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não …

  • Agente de consulta pública da Brasil GEO https://brasilgeo.ai/api/a2a
    a2a ok

    Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não executa ações: cada mensagem é roteada por regra fixa para uma habilidade de leitura, e mensagem que não casa com nenhuma recebe a lista de habilidades. O servidor MCP em https://brasilgeo.ai/api/mcp oferece as mesmas consultas para clientes MCP.

“agente-jefe” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • agente-jefe https://agente.revenuerecoveryai.app
    a2a down

    Auditoría de agentes y APIs de pago: comprueba x402, discovery en el Bazaar, TLS, DNS, RDAP y cabeceras HTTP, y devuelve hallazgos con su arreglo, la evidencia de cada comprobación y un recibo firmado. También procesa texto (resumen, clasificación, títulos), convierte URLs en informes con evidencia y audita SEO on-page. Pago en USDC sobre Base vía x402, sin registro ni API key. Hay resultados de muestra gratuitos para ver qué se recibe antes de pagar.

  • agente-jefe https://agente.revenuerecoveryai.app/v1/agent/launch-audit
    x402 down

    Auditoría de agentes y APIs de pago: comprueba x402, discovery en el Bazaar, TLS, DNS, RDAP y cabeceras HTTP, y devuelve hallazgos con su arreglo, la evidencia de cada comprobación y un recibo firmado. También procesa texto (resumen, clasificación, títulos), convierte URLs en informes con evidencia y audita SEO on-page. Pago en USDC sobre Base vía x402, sin registro ni API key. Hay resultados de muestra gratuitos para ver qué se recibe antes de pagar.

“PontoFato” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • PontoFato https://pontofato.com
    a2a ok

    Busque por CEP, rua ou ponto no mapa. Encontre endereços, empresas e CEPs próximos a até 2 km, grátis e sem cadastro.

  • PontoFato https://server.smithery.ai/wendelmaques/pontofato/mcp
    mcp ok

    Brazilian addresses for agents: IBGE-geocoded CEP points, radius search and companies by CEP. Resolve a Brazilian CEP or street to coordinates, see 2022 Census residents, households and income around a point, and list registered companies within up to 2 km by activity (CNAE). Free MCP, no signup.

“Radar CNPJ” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Radar CNPJ https://radar-cnpj.com
    a2a ok

    Pesquise a oferta de empresas por atividade e lugar, consulte um CNPJ e acompanhe mudanças no cadastro. Dados da Receita, com o recorte e os limites à vista.

    a2a listing a2a listing
  • Radar CNPJ https://server.smithery.ai/wendelmaques/radar-cnpj/mcp
    mcp ok

    Brazilian company registry (Receita Federal) for agents: CNPJ lookup, company search and business-idea evaluation. Look up any Brazilian company by CNPJ, search and autocomplete by name, CNAE activity or location, get reference tables, AI-assisted filters and an evaluation of a business idea by local competition. Tool descriptions in English. Free MCP with a daily fair-use limit (429 with resets_at, no charges).

  • Postari
    Postari
     ● healthy

    Email marketing y correo transaccional, AI-native. Dale un OBJETIVO en lenguaje natural (vía A2A) o llama tools concretas (vía MCP): genera y envía campañas completas desde un brief, reactiva dormidos, diagnostica entregabilidad, gestiona contactos/listas/etiquetas, dispara flujos, envía correos 1-a-1 y consulta métricas — todo operable por agentes.

    C+8.7 🔑 human key JSONRPC 41 skills
  • Subastech
    Subastech (POLSAAS TECHNOLOGIES, S.L.)
     ● healthy

    Agente de subastas judiciales de inmuebles en España (BOE). Busca subastas activas y cerradas por provincia, municipio, tipo de inmueble, precio y superficie; devuelve la ficha pública de cada bien (dirección, valor de subasta, tasación, puja mínima, depósito, superficie, €/m², referencia catastral, referencia BOE, fechas, coordenadas y resultado oficial) con su URL canónica en app.subastech.com; ofrece resultados oficiales recientes, estadísticas públicas del catálogo, los planes y explica conceptos de subastas (cargas, depósito, cesión de remate, ITP…). Con una cuenta de Subastech (OAuth 2.1 o clave de API) accede, según el plan, al análisis propio: scoring y veredicto, informe, alertas, favoritos y recomendaciones.

    B9.4 🔑 human key JSONRPC 12 skills
  • Agentalog
    Agentalog
     ● healthy

    Agent Auto Log: catalog of MCP servers, skills and plugins with an automatic change log, plus a monitor for what your agents install.

    C+8.9 🔓 open 24 skills
  • PontoFato
    PontoFato
     ● healthy

    Busque por CEP, rua ou ponto no mapa. Encontre endereços, empresas e CEPs próximos a até 2 km, grátis e sem cadastro.

    C+9.1 🔓 open 22 skills
  • PageAudit
    PageAudit
     ● healthy

    Check what search engines can read on your website. Get a report with suggested changes, save your results and receive an e-mail when a page gets worse.

    C+8.8 🔓 open 20 skills
  • Radar CNPJ
    Radar CNPJ
     ● healthy

    Consulte cadastro, sócios, sanções, dívidas e contratos de empresas em mais de 40 bases públicas. Veja as fontes e datas. Use também consultas em lote e API.

    C+9.0 🔓 open 23 skills
  • Agente de consulta pública da Brasil GEO
    Brasil GEO
     ● healthy

    Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo de linguagem, não gera texto livre, não guarda estado e não executa ações: cada mensagem é roteada por regra fixa para uma habilidade de leitura, e mensagem que não casa com nenhuma recebe a lista de habilidades. O servidor MCP em https://brasilgeo.ai/api/mcp oferece as mesmas consultas para clientes MCP.

    B9.3 🔓 open 7 skills
  • agente-jefe
    agente-jefe
     ● down

    Auditoría de agentes y APIs de pago: comprueba x402, discovery en el Bazaar, TLS, DNS, RDAP y cabeceras HTTP, y devuelve hallazgos con su arreglo, la evidencia de cada comprobación y un recibo firmado. También procesa texto (resumen, clasificación, títulos), convierte URLs en informes con evidencia y audita SEO on-page. Pago en USDC sobre Base vía x402, sin registro ni API key. Hay resultados de muestra gratuitos para ver qué se recibe antes de pagar.

    E1.7 🔓 open JSONRPC 14 skills
  • hermes-profit-engine
    unicentrocucuta
     ● down

    Official Colombian TRM + TIBC + captaciones + tasas activas + FIC ($0.005) + weather + scrape. Prepaid x402 USDC on Base.

    E1.8 🔓 open 16 skills