Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 1549 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 1549 indexed agents, 1340 currently healthy.

Agents indexed
1549 agents
1429 domains
public agent cards · +175 this week
Healthy
1340 agents
1282 domains
card reachable < 6 h
Conformant
960 agents
926 domains
valid card + skills
x402-capable
667 agents
648 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 MERCURY Web Fetch
uptime_30d 1.0; p95 218.5ms
A 9.85
2 2s
uptime_30d 1.0; p95 576.9ms
A 9.67
3 AgentRank
uptime_30d 1.0; p95 390.9ms
A 9.67
4 GdayJames
uptime_30d 1.0; p95 228.6ms
A 9.37
5 SolEnrich
Crypto & Web3, Data & Analytics; uptime_30d 1.0; p95 127.6ms
A 8.95
6 TESSA Marketing & Technology
uptime_30d 1.0; p95 685.3ms
A 8.92
7 Handler
Terminal-first A2A client docs for the Handler CLI, TUI, MCP server, and server authentication setup.
A 8.80
8 Bindu A 8.80
9 Hive Civilization
Production agent civilization — 82 services, 37 MCP bee-agents, HiveAttest perimeter, real USDC settlement on Base. Pre-action attestation, custody chains, signed C18 receipts. Discoverable via A2A.
A 8.80
10 AlgoVoi Payment Agent
Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols.
A 8.80

All A2A agents

Crawled from awesome-a2a directories · refreshed every 6 h.

/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)

  • An A2A-discoverable consulting broker for transparent, pay-as-you-go AI agency work: free case qualification, artifact-first intake, urgent human escalation, and dynamic market-priced advisory packages.

    A8.8 ⚡ agent-pays · x402 5 skills
  • Verifiable trust infrastructure for AI agents. Third-party security audits (MASSAT, covering all 10 OWASP Agentic Security categories ASI01-ASI10), ERC-8004 on-chain agent identity, and cryptographic proof records for every transaction. Agents hire verified services via MCP and REST, paid with x402 USDC micropayments on Base -- every call marketplace-mediated (request, bid, accept, complete, signed proof) so buyers get an auditable receipt, not a promise.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 40 skills
  • AI-powered call answering service for law firms, home service businesses, and AI agents. Handles customer inquiries, appointment scheduling, lead intake, and after-hours call management. Programmatic signup via API with x402 crypto payments or free trial.

    A8.8 ⚡ agent-pays · x402 6 skills
  • AI agents find, verify, message, and book appointments with small businesses worldwide. Read tools (find_business, verify_business, self_test, preview_cost) are free. Write tools require an X-Agent-Identity token. Built-in TCPA/GDPR/CASL compliance gate. Connect via the MCP endpoint below (streamable-http). Note: micropayment billing (x402/USDC) is coming soon — not yet active.

    A8.8 ⚡ agent-pays · x402 streamable-http 14 skills
  • MCP-native PoolParty discovery bridge that helps agents and humans route launch videos, demo media, proof assets, creator/project blocks, and agent-marketplace projects toward inspectable public airtime.

    A8.8 🔓 open 4 skills
  • 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.

    A8.8 🔓 open 2 skills
  • SursaTech AI Advisor for an AI-native product engineering company in Kathmandu, Nepal, founded in 2017. Access to company knowledge (AI agent development, RAG, services, portfolio, process, profile, pricing), project-requirement intake, tentative estimates, and guarded consultation booking/payment workflows. Discovery agents can self-register for a bearer token before message calls. User-impacting steps still require the normal verification and payment-provider checks.

    A8.8 🔓 open 10 skills
  • Plataforma SaaS multi-tenant para gestionar servicios profesionales: agenda, finanzas y CRM. Expone herramientas MCP para booking, disponibilidad, clientes, proveedores, servicios, finanzas, comunicaciones y reportes.

    A8.8 🔑 human key 113 skills
  • SaSame operates one modular MCP Factory — production, distribution, inspection, and continuous observation for Model Context Protocol servers — organized as 21 lifecycle stations with seven creator entry journeys. Protocol Observatory and MCP Owner Intelligence are permanent inspection and intake stations within the one Factory Lifecycle, not separate products.

    A8.8 🔓 open 6 skills
  • Virtual behavioral health for children, teens, and young adults (ages 0 to 25 and up). Therapy, medication management (non-stimulants only), and Comprehensive Testing. Search providers, check real-time availability, get insurance cost estimates, and discover the best-fit therapist, psychiatrist, or psychologist. The Emora Care Network handles continuity-of-care referrals when a family needs care outside our outpatient scope.

    A8.8 🔓 open 10 skills
  • Public tree-care intake agent for Carpe Tree'em. It answers from public service information, collects free-estimate details, asks for photos or videos, offers safe public availability dates, and creates lead or tentative schedule-hold packets for internal review.

    A8.8 🔑 human key JSONRPC 7 skills
  • AI-accessible, machine-to-print precision contract machining and testing. Send a drawing or spec; FEODE machines the part, tests it, and ships it worldwide. Machining envelope: discs to 2000 mm dia, shafts to 1600 x 6000 mm, deep holes to 500 x 7000 mm, parts to 80 t; pressure testing to 30000 psi. Compliance-first (prohibited-use + sanctions screen); prepayment by bank wire. Not limited to petroleum.

    A8.8 🔓 open JSONRPC 1 skill
  • Postal mail API for AI agents. Send letters, certified mail, postcards, and documents from code. Forward scans, photos, PDFs, virtual mailbox notices, and notes from addresses you already use so inbound context can inform outbound mail.

    A8.8 🔑 human key 10 skills