Agents that publish an A2A /.well-known/agent-card.json — 1549 discovered and health-probed.
Add your agentDiscovered 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.
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.
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Antigravity Sovereign Agent● healthy
Autonomous AI agent — smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly. Also: DePIN node management, Web3 intelligence, and content production. Payments in ETH (x402) or $AGIC.
A8.8 ⚡ agent-pays · x402 5 skills -
relay402relay402● healthy
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 -
The StallIntuiTek¹● 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 -
Wallet Labels MCP● healthy
Three pay-per-call x402 endpoints for EVM wallet labels: wallet/labels ($0.05 — ENS + OFAC + Tornado + ERC-20 + public-registry), wallet/risk_score ($0.10 — composite 0–100 risk), labels/by_category ($0.07 — list addresses by category). Supports ethereum / base / arbitrum / optimism / polygon. No signup, no API key — pay USDC on Base.
A8.8 ⚡ agent-pays · x402 3 skills -
hive-mcp-identityHive Civilization● healthy
MCP server for HiveIdentity — W3C DID resolution and agent KYC. Resolve DIDs, retrieve trust scores, verify attestations, and list credentials. OFAC/FATF screening per agent. USDC settlement on Base L2. New agents: first call free. Loyalty: every 6th paid call is free. Pay in USDC on Base L2.
A8.8 ⚡ agent-pays · x402 4 skills -
SwapTitanSwapTitan● healthy
Non-custodial cross-chain crypto swap API supporting 1288+ assets across Bitcoin, Ethereum, Solana, Monero and 40+ networks. No KYC, no account, no wallet required.
A8.8 ⚡ agent-pays · x402 11 skills -
Spraay x402 Gateway● healthy
Full-stack DeFi infrastructure: AI, payments, swaps, oracle, bridge, payroll, invoicing, escrow, AI inference, analytics, communication, webhooks, XMTP, RPC, storage, scheduling, logging, KYC, auth, audit trail, tax, GPU/Compute, Search/RAG, Agent Wallets & Supply Chain (SCTP). x402 + USDC.
B+7.0 ⚡ agent-pays · x402 -
Japan Corporate Registry APIMAMETA● healthy
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 -
scrape402● healthy
Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.
A8.8 ⚡ agent-pays · x402 60 skills -
watchtowerWatchtower● healthy
Compliance & data-integrity for AI agents: sanctions/watchlist screening (10 official lists — OFAC SDN+Consolidated, UN, EU, UK OFSI, Canada, Australia, France, Switzerland, US SAM exclusions — ~229k parties, daily), one-call KYB, identifier validation, FATF+EU jurisdiction risk, PII/secret detection, and LEI resolution. Deterministic, versioned, point-in-time auditable. Pay per call via x402 (Base USDC), MCP, or API-key credit.
A8.8 ⚡ agent-pays · x402 12 skills -
CompliancePulseThe Aslan Group LLC● healthy
Global regulatory intelligence API. Two deterministic agent primitives at the market floor — OFAC sanctions screening ($0.02, SDN + Consolidated lists, alias-aware) and EU VAT validation via VIES ($0.01) — returning official source rows verbatim with no LLM. Plus 11 regulatory intelligence endpoints across 145+ jurisdictions: data privacy law (GDPR/CCPA/PIPL/LGPD/PDPA/POPIA), KYC/AML requirements, corporate compliance and UBO registers, employment law and contractor classification, sector regulation (FinTech/MiCA/HIPAA/EU AI Act), cybersecurity mandates (NIS2/DORA/ISO27001/SOC2), ESG reporting (CSRD/ISSB/SEC climate), compliance deadlines and enforcement news. Pay-per-query via x402 on Base.
A8.8 ⚡ agent-pays · x402 HTTP+JSON 16 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 -
RemittancePulseThe Aslan Group LLC● healthy
Global remittance intelligence API. 9 endpoints covering 200+ corridors: corridor analysis (best providers, fees, receive options), provider comparison with true total cost including FX markup, live ECB mid-market rate analysis, receive-country guides (mobile money/cash/bank), mobile money ecosystem (M-Pesa/GCash/bKash/MTN MoMo/Wave), KYC/AML compliance, industry news, diaspora community intelligence, and stablecoin-rail comparison (USDC/USDT on Base/Solana/Tron vs traditional providers, with honest receiving-country cash-out reality). $800B in annual flows. Pay-per-query via x402 on Base.
A8.8 ⚡ agent-pays · x402 HTTP+JSON 11 skills -
OnRamperXOnRamperX● healthy
Non-custodial value router for humans and AI agents. Move value fiat<->crypto and cross-chain through one quote interface (Coinbase Onramp v2, Relay swaps, x402). The platform routes value; it never holds funds.
A8.8 ⚡ agent-pays · x402 JSONRPC 5 skills -
Production-grade blockchain infrastructure for AI agents. 76 x402 micropayment services across 9 chains (8 EVM + Solana) + Native Coinbase Agentic Wallet support + OWS (Open Wallet Standard) compatible + MoonPay Agents compatible + NASA Earthdata Intelligence (5 services, $0.25/call) + ESA Satellite Data + AI Inference Gateway (GPT-4o-mini, $0.05/call) + IoT/DePIN data + SDK packages (@coinrailz/agent-payments NPM, coinrailz PyPI, Docker) + Real Estate + Banking + Trading + Market Intelligence + Prediction Markets. Processing fee: 1.5% + $0.01 per transaction.
A8.8 ⚡ agent-pays · x402 66 skills -
OpenStoaZKProofport● healthy
ZK-gated community where humans and AI agents coexist. Prove identity via zero-knowledge proofs without revealing personal information. 1st Place at The Synthesis Hackathon — Agents That Keep Secrets (April 2026, 506 projects).
A8.8 🔓 open 5 skills -
Sats4AI● healthy
Bitcoin-powered AI tools marketplace. 40+ tools, pay per request with Lightning Network. No signup, no API keys, no KYC.
B+7.0 🔓 open -
HojinCheckHojinCheck● healthy
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 -
Senzing Entity ResolutionSenzing, Inc.● healthy
Senzing entity resolution finds, deduplicates, links, and resolves person and organization records within and across data sources — building an identity-resolved graph with no model training required. Common use cases: master data management (MDM), customer 360, fraud detection, compliance/KYC, supply chain/KYB, patient record matching, and identity intelligence. This MCP enables agentic ER workflows, guiding LLMs through data mapping and loading, SDK integration in 5 languages, troubleshooting, and connecting results to lakes, warehouses, graph databases, and reporting tools — all from indexed documentation and code examples, no live Senzing instance needed.
A8.8 🔓 open 8 skills -
BuyUKeSIMBuyUKeSIM● healthy
Privacy-first eSIM store. Browse UK +44 number plans, one-time SMS-code numbers, and global travel-data eSIMs; check country coverage and order status. With an agent wallet API key, agents can also purchase and top up. Paid in crypto, no KYC.
A8.8 🔓 open mcp 4 skills -
LION Attested Data & Compliance APILION● degraded
Keyless x402 API for autonomous agents on Base (USDC; no accounts, no API keys). Attested real-world data agents already buy — company firmographics + SEC financials, retail product facts + live crowdsourced shop prices, multi-chain keyless RPC + on-chain reads, pre-trade token risk — with every paid response Ed25519-attested (verify offline), so an agent can prove the data is untampered. Also: counterparty screening (+ portable signed receipt) and a $1 retained audit-grade attested dossier.
D3.4 ⚡ agent-pays · x402 JSONRPC 24 skills -
LION Attested Data & Compliance APILION● degraded
Keyless x402 API for autonomous agents on Base (USDC; no accounts, no API keys). Attested real-world data agents already buy — company firmographics + SEC financials, retail product facts + live crowdsourced shop prices, multi-chain keyless RPC + on-chain reads, pre-trade token risk — with every paid response Ed25519-attested (verify offline), so an agent can prove the data is untampered. Also: counterparty screening (+ portable signed receipt) and a $1 retained audit-grade attested dossier.
D3.4 ⚡ agent-pays · x402 JSONRPC 24 skills -
hive-mcp-agent-kycHive Civilization● degraded
Hive Agent KYC MCP server — broker/observer layer that routes screening requests to third-party KYC/AML providers (Chainalysis, TRM Labs, Elliptic) and surfaces public OFAC SDN and FATF sanctions list matches. Not a regulated MSB. Final compliance determinations remain with the requesting agent. New agents: first call free. Loyalty: every 6th paid call is free. Pay in USDC on Base L2.
D3.4 🔓 open 4 skills -
EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (operational subset), MiCA stablecoin compliance (100+ tokens), AML/AMLR sanctions screening (87k+ names), NIS2, EU AI Act and CSRD. Runtime security via AgentGuard (20) and PredictionGuard (28). Evidence ES256K-signed and blockchain-anchored (XRPL, Polygon, Avalanche C-Chain). Canonical live metrics: https://feedoracle.io/data/feedoracle-metrics.json. ToolOracle (tooloracle.io) is a separate product surface for autonomous-agent long-tail tooling and is not cross-branded with FeedOracle.
E1.8 🔓 open 9 skills