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)

  • The Stall
    IntuiTek¹
     ● healthy

    Domain-agnostic x402 capability chassis by IntuiTek¹. 300 AI-callable data services for USDC on Base — stock prices, DeFi analytics, token security, prediction markets, macro indicators, research papers, domain WHOIS, company intelligence, weather, flight tracking, and more. MCP interface at /mcp — no wallet, no API keys.

    A8.8 ⚡ agent-pays · x402 302 skills
  • PetPulse
    The Aslan Group LLC
     ● healthy

    Veterinary intelligence API grounded in PubMed peer-reviewed research and FDA animal drug adverse event data. 12 endpoints covering symptom triage, veterinary research, condition-based nutrition, medication dosage context, breed-specific health guides, force-free behavior/training, lifetime cost planning, insurance comparison, senior-pet care, toxicity triage, pet food recall checks, and pet travel rules. Pay-per-query via x402 micropayments on Base.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 12 skills
  • SeniorPulse
    The Aslan Group LLC
     ● healthy

    Global elder care intelligence API — 14 endpoints covering Medicare/pension guidance, care facility evaluation (US + UK + Canada + Australia), medication safety using FDA Beers Criteria, benefits discovery (SSI, Medicaid, VA Aid & Attendance, SNAP, LIHEAP, property tax relief), international state pension intelligence (UK, Canada, Australia, Germany, India, Japan), cognitive decline staging, elder law documents, post-loss estate guidance, and caregiver support. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet). All endpoints support any language via ?lang= parameter. U

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 11 skills
  • NutriPulse
    The Aslan Group LLC
     ● healthy

    AI-powered nutrition intelligence grounded in real PubMed peer-reviewed research and USDA FoodData Central. Evidence-based supplement analysis ranked by strength of evidence, personalized nutrition plans, food profiles, meal analysis, supplement stacks, CGM glucose pattern review, supplement-interaction checks, lab-result interpretation, longevity protocols, and prenatal nutrition for any health goal. Honest science — not marketing claims.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 14 skills
  • BizIntel API
    BizIntel API
     ● healthy

    Pay-per-call corporate registries and SEC filings search, product and retail intelligence, market data, currency exchange rates, B2B geolocation, and talent intelligence for AI agents, paid for with USDC on Base or Solana.

    A8.8 ⚡ agent-pays · x402 50 skills
  • Tools4AI Based A2A Server
    Example Corp
     ● healthy

    This agent provides various capabilities including ticket raising, food preference inquiry, car comparison, Selenium actions, and restaurant bookings.

    A8.8 🔓 open 5 skills