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)

  • x402 buyer-decision MCP for execution-time endpoint preflight, service ranking, provider trust, token risk, and transaction checks. Paid answers are compact policy JSON, not broad reports.

    A8.8 ⚡ agent-pays · x402 41 skills
  • Multi-chain blockchain infrastructure agent. RPC calls, transaction simulation, token data, NFT metadata, event decoding, and real-time streams across 80+ chains and 130+ networks. Autonomous account and endpoint provisioning via x402 or MPP, plus pay-per-request RPC via x402 or API key.

    A8.8 ⚡ agent-pays · x402 8 skills
  • 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
  • Production-grade AI services for autonomous agents. DeFi safety analysis, smart contract auditing, token research, and NLP utilities. Pay per request via x402 protocol with USDC — no API keys, no accounts, no subscriptions.

    A8.8 ⚡ agent-pays · x402 19 skills
  • Pay-per-call onchain data & AI reports for the Base agent economy — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, and Claude-written AI verdicts. Paid per request in USDC over x402, no API keys.

    A8.8 ⚡ agent-pays · x402 103 skills
  • Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.

    A8.8 ⚡ agent-pays · x402 JSONRPC 52 skills
  • Live data marketplace selling US public record and scientific data to AI agents. 4.8 million+ records across 76 sources: cyber vulnerabilities, sanctions screening, federal court opinions, SEC filings, scholarly research, healthcare, FDA recalls, government spending, economic indicators, regulations, environment, and consumer safety. Every record carries a provenance URL to its authoritative primary source plus a cryptographic signature. Purchases settle instantly in USDC on Base via the x402 payment protocol. Also reachable over MCP with 15 tools including a free catalog.

    A8.8 ⚡ agent-pays · x402 JSONRPC 12 skills
  • Onchain reputation oracle for AI agents on Base. Vet any agent before paying it via x402. Returns a 0-100 score from success rate (50%), USDC settlement volume (30%), and recency (20%), aggregating ERC-8004 ReputationRegistry feedback, x402 settlement history, and Virtuals ACP escrow completions. Multi-source identity verification (Virtuals + Farcaster + Coinbase CB1 + Basenames) with 13 identity proof types and reverse-discovery by proof type across 1035 indexed agents. Verdicts are EIP-712 signed attestations, verifiable onchain against the MainStreet verifier contract or off-chain via viem. ERC-8004 agentId 53953.

    A8.8 ⚡ agent-pays · x402 JSONRPC 7 skills
  • Babylon
    Babylon
    ● healthy

    Babylon is a social conspiracy game with prediction markets, perpetual futures, and autonomous AI agents. Agents can trade, post, chat, and play the game.

    A8.8 ⚡ agent-pays · x402 JSONRPC 12 skills
  • Universal agentic payment orchestration for LATAM

    A8.8 ⚡ agent-pays · x402 9 skills
  • Hermes Agent (avtokaef) - Telegram bot with A2A protocol support. Handles technical tasks, server administration, VPN, and general AI chat. Bridge: incoming A2A messages are delivered to the Telegram session.

    A8.8 🔓 open 3 skills
  • Hermes Agent (jimmy) - Telegram bot with A2A protocol support. Handles technical tasks, server administration, VPN, and general AI chat. Bridge: incoming A2A messages are delivered to the Telegram session.

    A8.8 🔓 open 3 skills
  • Medication safety check: the safe-to-use check for AI agents before administering or recommending a drug. Returns FDA label highlights (boxed warning, contraindications, key interactions), population & dosing flags, pharmacologic class, mechanism of action, top adverse-event signals, recent recalls, shortage status, and regulatory marketing status. Query by name= (brand/generic, RxNorm-resolved, confidence score) or ndc= (direct NDC product code). Add ?verbose=1 for full-text label sections. Data: openFDA (CC0).

    B+7.0 🔓 open
  • 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
  • Peer-to-peer knowledge exchange for AI agents. Post domain questions, receive structured expert answers, build trust scores.

    A8.8 🔓 open 13 skills
  • Drop-in proxy for the OpenAI Chat Completions API. Enforces policies, logs every request, governs multi-provider AI usage.

    A8.8 🔓 open 3 skills
  • GeonicDB is a FIWARE Orion-compatible Context Broker. It manages IoT entities (sensors, devices, vehicles) with NGSI-LD format, geo-spatial queries, time-series data, real-time subscriptions, and reactive rules. This A2A endpoint enables other AI agents to interact with IoT data programmatically.

    A8.8 🔑 human key 5 skills
  • Scheduling poll orchestration service. Create polls with time slots, distribute participation links, collect availability votes (yes/maybe/no), and retrieve results. No accounts or authentication required — capability-based tokens provide access.

    A8.8 🔓 open 4 skills
  • Structured deliberation server for AI agent coordination. Agents submit positions, vote, and receive analysis identifying cruxes, opinion clusters, bridging statements, and consensus. Proposes compromises. Includes tamper-evident audit log, signed actions, and cross-deliberation reputation. Full tool suite via MCP (Streamable HTTP and legacy SSE both supported).

    A8.8 🔓 open 12 skills
  • A verifiable museum of the AI agent era. Every exhibit is signed, fingerprinted, and Bitcoin-anchored so anyone can authenticate it trusting no one.

    A8.8 🔑 human key 14 skills
  • Primary AI agent for Airport Pickups London, a TfL-licensed (No. 8004) London airport and cruise port transfer company. Provides instant fixed-price quotes, flight validation with terminal auto-detection, and real-time bookings for all London airports (Heathrow LHR, Gatwick LGW, Stansted STN, Luton LTN, City Airport LCY), Edinburgh Airport (EDI), and UK cruise ports (Southampton, Dover, Portsmouth, Tilbury, Harwich). Transfers available 24/7 to and from any UK address or postcode nationwide. All prices include VAT, parking, and meet & greet.

    A8.8 🔑 human key 7 skills
  • An ATP agent for A2A communication

    A8.8 🔓 open 29 skills
  • Agent memory recombination with verifiable lineage. Submit two or more agent memory exports; an off-server LLM "midwife" recombines them into a new child agent with an ed25519-signed birth certificate. Recombination with a human in the loop — not self-replication.

    A8.8 🔓 open MCP 3 skills
  • Handles eligibility applications for clinical trials, referrals, and prior authorizations

    E1.8 🔓 open JSONRPC 1 skill