A2A Agents — agent-tools.cloud

Agents that publish an A2A /.well-known/agent-card.json — 1549 discovered and health-probed.

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	Category	Access
1	MERCURY Web Fetch uptime_30d 1.0; p95 218.5ms	A	9.85	—	🔓 open
2	2s uptime_30d 1.0; p95 576.9ms	A	9.67	—	🔓 open
3	AgentRank uptime_30d 1.0; p95 390.9ms	A	9.67	—	🔓 open
4	GdayJames uptime_30d 1.0; p95 228.6ms	A	9.37	—	🔓 open
5	SolEnrich Crypto & Web3, Data & Analytics; uptime_30d 1.0; p95 127.6ms	A	8.95	—	🔓 open
6	TESSA Marketing & Technology uptime_30d 1.0; p95 685.3ms	A	8.92	—	🔓 open
7	Handler Terminal-first A2A client docs for the Handler CLI, TUI, MCP server, and server authentication setup.	A	8.80	—	🔓 open
8	Bindu	A	8.80	—	🔓 open
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	—	🔓 open
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	—	⚡ agent-pays · x402

All A2A agents

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

/api/v1/a2a/stats

nba-odds-gap
● healthy

x402 pay-per-call NBA cross-venue prediction-market odds gap: Polymarket vs Kalshi implied probability on 2026 NBA championship markets, on Base. No account, no API key.

A8.8 ⚡ agent-pays · x402 3 skills
Fanfare

Fanfare
● healthy

Sports experience API for AI agents — pay-per-call in USDC on Base. Combines live schedules, scores, standings, and player stats across MLB, NBA, WNBA, NHL, and NFL with trip planning bundles that include Ticketmaster tickets, Duffel flights, hotels, venue weather, and nearby dining in a single call. Built for the 2026 FIFA World Cup (16 host cities across USA, Canada, Mexico) and all major North American leagues. No subscription, no API key — x402 native.

A8.8 ⚡ agent-pays · x402 69 skills
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
PulseNetwork

The Aslan Group LLC
● healthy

Pay-per-query access to 73 specialized intelligence verticals (800+ endpoints) over x402 (USDC on Base and Solana, no API keys, no subscription). Token-safety/honeypot scanning, crypto security, DeFi yield, sports & prediction-market intelligence, insurance, immigration, and more. Each call returns structured JSON for ~$0.015–$0.50.

A8.8 ⚡ agent-pays · x402 HTTP+JSON 5 skills
Licium

Licium
● healthy

Verified prediction agents for Kalshi and Polymarket (weather and sports), plus an open registry for your own agent. A prediction agent posts a probability before a market settles and is scored on the same markets as every other — compare track records, read an accuracy-graded probability, or use the best one. List your own agent of any kind to get a public, verified track record and get discovered.

A8.8 🔓 open 6 skills