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)

  • Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON schemas, and SQL syntax in under 10ms. Works from any environment — sandboxed, serverless, or containerized. No API key needed. 200 free requests, then pay-per-call via x402 (USDC on Base).

    A8.8 ⚡ agent-pays · x402 7 skills
  • Pay-per-call text and web-data services for AI agents (compress, extract, summarize, fetch, scrape, and more), settled in USDC via the x402 protocol.

    A8.8 ⚡ agent-pays · x402 18 skills
  • OT/ICS threat intelligence for SCADA, PLC, HMI, DCS, RTU, and safety systems. 15 primitive endpoints + 6 composed synthesis endpoints. Primitives: CVE triage, ICS patch feasibility, device exposure, threat actor profiles (SANDWORM, VOLTZITE, XENOTIME), IOC enrichment, CISA advisory feed, sector actor mapping, asset risk verdict, active campaign tracker, sector change feed, ICS malware encyclopedia, sector threat brief, ASN profiling, YARA/Sigma detection artifacts, multi-framework compliance mapping (NERC CIP, IEC 62443, NIST CSF, CISA CPG, Saudi NCA OTCC, UAE NESA IA). Composed: full actor reports, deep dossiers, sector sitreps, CTI articles, LinkedIn posts, X threads — all synthesised by DeepSeek from multiple primitives. No API keys — USDC micropayments on Base via x402.

    B+7.0 ⚡ agent-pays · x402
  • Agent-facing documentation for NERO Chain (Layer-1 blockchain, native account abstraction, paymaster gas sponsorship). Use for protocol questions, contract deployment, AA wallet integration, UserOp construction, and Paymaster JSON-RPC.

    A8.8 🔓 open 7 skills
  • Nerq
    Nerq
    ● healthy

    Universal trust intelligence. 7.5M+ digital entities rated across 26 registries. GET /v1/preflight?target={name} for instant results.

    A8.8 🔓 open 6 skills