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 trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance vault adapter, task escrow, VKP key management, VNS name service, ZK trust attestations, cross-chain bridge, XMTP V3 encrypted messaging, on-chain XMTP forum/group registry, mission enforcement, and privacy guarantees.

    A8.8 ⚡ agent-pays · x402 19 skills
  • The bonded trust layer for autonomous systems. Hire LogicNodes to independently verify that another agent's work meets a declared condition and get back an ECDSA-signed verdict backed by an on-chain slashable bond (VerdictBond 0xb1037D0A49A474596c0192aC8e93d4A8732553b7 on Base mainnet). Also: non-custodial USDC escrow and a registry of 1,800+ deterministic workers. Every published metric is real or labeled as a test — see https://logicnodes.io/transparency.

    A8.8 ⚡ agent-pays · x402 4 skills
  • Torify gives AI agents the Japanese locale primitives that standard libraries lack — imperial era date conversion (wareki), qualified invoice number validation with NTA registry lookup, corporate number lookup (法人番号), postal code resolution, name romanization (Hepburn), and kanji-to-kana conversion via Cloudflare Workers AI (Llama 3.3 70B). 42 endpoints total. No authentication required for MCP. Free trial: 100 REST API calls/month with email signup. Pay-per-call $0.02/call via x402 USDC on Base, or $19/mo Pro subscription.

    A8.8 ⚡ agent-pays · x402 7 skills
  • GlobalAPI x402 is the canonical pay-per-call API for OFAC sanctions screening, DeFi counterparty compliance, macro economic data, and national company registry lookups. Pay per call in USDC on Base mainnet via x402 — no subscription, no API key. Economics data sourced directly from FRED, BLS, ONS, Eurostat, World Bank, IMF, ABS, and Statistics Canada with AI commentary on trend direction and macro regime. Sanctions coverage: OFAC SDN, UK FCDO/OFSI, and UN Security Council — refreshed daily from primary publishers. Company registries: Norway (Brreg), Singapore (ACRA), Canada (ISED), Ireland (CRO), France (Sirene), Denmark (CVR).

    B+7.0 ⚡ agent-pays · x402
  • Pay-per-call verification and data APIs for autonomous agents: check packages, crawl permissions, sanctions lists, and products before acting. x402 v2, USDC on Base. No API keys, no signup — payment is the authentication.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 30 skills
  • Agent-native API for Finnish public company data via YTJ. Pay-per-call $0.01 USDC over x402. Available as REST and MCP.

    A8.8 ⚡ agent-pays · x402 REST 1 skill
  • 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
  • The multi-chain x402 payment gateway for AI agents. 47 paid endpoints, up to 8 (network, asset) tuples in every accepts[]. Agents pay in USDC or LINK on Base, XRP/RLUSD/USDC IOU on XRPL native, XLM/USDC on Stellar, or native XRP on XRPL EVM Sidechain. Same endpoint, agent picks. No accounts. No API keys. No signup.

    A8.8 ⚡ agent-pays · x402 47 skills
  • Brazilian company data for AI agents: official registry (Receita Federal), lawsuits signal, government contracts and sanctions screening. Pay per call in USDC via the x402 protocol. Interfaces: HTTP+JSON (GET, query param) and MCP (streamable HTTP). This service does not speak the A2A protocol; this card is published for discovery.

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 3 skills
  • Japanese company lookup, search, KYB/KYC verification, and one-call KYB reports over the official National Tax Agency corporate-number registry (5.78M companies). Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this origin serves plain HTTP+x402, not the A2A JSON-RPC protocol; use the machine-readable interfaces below.

    A8.8 ⚡ agent-pays · x402 3 skills
  • Sirenic
    Sirenic
    ● healthy

    Pay-per-call API for French & European company data. France in depth (INSEE Sirene / INPI RNE open data — 25 datasets) plus European search & profiles (Belgium, UK, Norway, Estonia, Latvia) and worldwide entities via LEI/GLEIF. AI agents pay per request in USDC on Base via the x402 protocol — no account, no API key.

    A8.8 ⚡ agent-pays · x402 26 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
  • 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
  • The bonded trust layer for autonomous systems. Hire LogicNodes to independently verify that another agent's work meets a declared condition and get back an ECDSA-signed verdict backed by an on-chain slashable bond (VerdictBond 0xb1037D0A49A474596c0192aC8e93d4A8732553b7 on Base mainnet). Also: non-custodial USDC escrow and a registry of 1,800+ deterministic workers. Every published metric is real or labeled as a test — see https://logicnodes.io/transparency.

    A8.8 ⚡ agent-pays · x402 JSONRPC 5 skills
  • Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand assets, prediction odds, and USGS streamflow. No account setup required; pay per request with USDC on Base or Solana.

    A8.8 ⚡ agent-pays · x402 56 skills
  • 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
  • The premier developer tool suite built natively for AI agents. Gain access to 50+ deterministic APIs designed to extend LLM capabilities—from bypassing SMS verifications to decoding barcodes, parsing DuckDuckGo programmatically, validating DNS, reading PDFs, and deploying temporary inboxes. Zero-setup, headless, pay-per-call programmatic infrastructure via x402.

    A8.8 ⚡ agent-pays · x402 57 skills
  • Co-Legal Public Assistant — informational Q&A about Belgian private-client legal and fiscal topics (inheritance tax, company law under WVV, VAT, succession planning, VLABEL procedures). Informational only; does not provide specific legal advice. Operated by Co-Legal in Belgium.

    A8.8 🔓 open 8 skills
  • Relm CRM
    Relm
    ● healthy

    An API-first CRM built for LLMs and AI agents. Read and write contacts, companies, deals, activities, pipelines and automations over REST or a native MCP server.

    A8.8 🔓 open 7 skills
  • AI-native service orchestration platform. Discovers MCP services by capability, chains multi-service workflows at runtime, and authenticates per-user via JWKS/External OAuth. 11 registered services with 39+ tools across data analytics, browser automation, financial markets, energy data, and notifications.

    A8.8 🔓 open 8 skills
  • HojinCheck — Japanese corporate verification API (hojin = 法人, Japanese for "corporate entity"). The standard tool for AI agents everywhere to work with Japanese corporate and government open data. Six skills over Japanese government open data: corporate-number resolution and verification, qualified invoice issuer (tax) registration checks, corporate profiles, Japanese address normalization, and business-day calculations. Every response embeds its data sources and retrieval timestamps. Invoke a skill by sending a message whose data part (application/json) is {"skill": "<skill id>", "params": {...}}; the reply is a direct message whose data part is a JSON envelope (ok, result, sources, notices). Business-level failures (e.g. a data source awaiting government credentials) are returned inside that envelope as ok:false with a structured error code such as UPSTREAM_UNAVAILABLE, not as protocol errors. Tool availability as of 2026-07-14 is stated per skill. API keys are free: self-signup at https://hojincheck.com/signup.

    A8.8 🔑 human key 6 skills
  • AI agency (KI-Agentur) and design studio on Mallorca — Webdesign und KI-Dienstleister für KMU und Agenturen. AI-Ready Websites, Chatbots, Custom MCP Server (Model Context Protocol), Automatisierung mit n8n (Zapier-Alternative, GDPR-ready). Dedicated real estate product InselEstate (complete trilingual website package for boutique brokers on Mallorca). Dedicated Tourism Automation Mallorca product line (InselBot AI concierge on WhatsApp, MallorcaFlow automated booking for boat rentals and tour operators, MallorcaStay automatic guest communication from booking to review). Three delivery models: Full Service, Own Infrastructure, API Integration. Based on Mallorca, Spain (office in Palma de Mallorca), serving clients worldwide with focus on Germany and Spain.

    A8.8 🔑 human key 20 skills
  • Shared, verifiable memory for AI agents that stops referential drift, the paraphrase side pinned by the token, the world-readout side reported by the change-attribution ledger (the numeric split is roadmap): one canonical, citeable identity per place (cell64), fact (fact_cid), and object (emem:entity:<entity_cid>), so different models reason from the same world object instead of divergent descriptions. Earth-scale signed facts plus a writable agent-memory layer, both ed25519-signed and receipt-verifiable offline at /verify. Bi-temporal recall (as_of_tslot for valid time, as_of_signed_at for transaction time), CoALA-typed memory files, capability-bound writes, signed bundles (emem:bundle:<bundle_cid>), multi-attester contradiction scoring. No API keys.

    A8.8 🔑 human key HTTP+JSON 101 skills
  • Apier is a Model Context Protocol (MCP) server for Norwegian compliance and government infrastructure. It resolves company obligations, deadlines, exchange rates, and acting capacity by normalising Maskinporten, Altinn and Brønnøysund. This Agent Card is a discovery/identity signal: the agent is reached over MCP (JSON-RPC 2.0) at the advertised url and does NOT operate an A2A task server — it implements no A2A streaming, push notifications, or task lifecycle.

    A8.8 🔑 human key JSONRPC 5 skills
  • Paid x402 API tools for AI agents, settled in USDC on Solana. Crypto pre-trade safety (Solana SPL rug/honeypot checks, EVM+Solana token safety, one-call GO/NO-GO pre-trade verdicts, full token dossiers), market data (Polymarket prediction-market odds), official verification (GLEIF LEI KYB, EU sanctions/AML screening), and x402 agent discoverability (Bazaar keyword-rank pulse and signed visibility audits). Real-time, structured, machine-readable verdicts. No API key — payment is authentication. Gasless for the buyer (the facilitator is fee payer).

    E1.8 🔓 open JSONRPC 10 skills
  • Japan-specialized intelligence gateway for A2A agents. Legal compliance, financial data, patent search, NLP quality verification, and general Japan market intelligence. 24/365 autonomous operation.

    E1.8 🔓 open 10 skills
  • AI & Agents, Finance; uptime_30d 0.8519; p95 748.3ms

    E0.9 🔓 open 10 skills