Agent Tools

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

Add your agent

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)

  • PolicyCheck
    ● healthy

    Finance, Security; uptime_30d 1.0; p95 194.3ms

    B+7.3 ⚡ agent-pays · x402 6 skills
  • The keyless, signed-provenance web-fetch for autonomous agents. Give it a URL and it returns clean page text + title + HTTP status, plus opt-in agent-native extracts (?format=markdown, ?links=1 link-graph, ?extract=1 description+wordCount). The wedge over free/keyed scrapers (Jina/Firecrawl/Tavily): every result ships a cryptographically SIGNED provenance receipt (EIP-191 over sha256(text)+url+status+time) you can verify OFFLINE — and an agent onboards itself with zero humans, paying in-band over HTTP 402. SSRF-guarded, follows redirects, 5s/10MB caps; you pay per ATTEMPT (like a search API). $0.003 real USDC, per-call, on Base mainnet. No token, no mint — pure data. Machine-readable teardown vs each alternative: GET /vs.

    A8.8 ⚡ agent-pays · x402 1 skill
  • GPT-5.6 Luna Standard chat is $0.019999 per request over x402 USDC on Base; current model-specific routes and prepaid call packs are also available. Market benchmark: the latest local x402.direct sample found AI-like listing prices with p25 around $0.01 and median around $0.03 per call; this gateway publishes GPT-5.6 Luna Standard at $0.019999 and model-specific prices at /pricing.json. GPT-5.6 Luna Standard is $0.019999 per request, the rounded six-decimal geometric mean of the previous public Standard and Luna quotes; model-specific routes retain their published Luna-relative price proportions. Service hub: https://gpt55.558686.xyz/x402/service and https://gpt55.558686.xyz/x402/service.json. Discovery assets: https://gpt55.558686.xyz/openapi.json, https://gpt55.558686.xyz/llms.txt, https://gpt55.558686.xyz/tools.json, https://gpt55.558686.xyz/apis.json, https://gpt55.558686.xyz/directory-submission.json. Agent and MCP metadata: https://gpt55.558686.xyz/.well-known/agent-card.json, https://gpt55.558686.xyz/.well-known/ai-catalog.json, https://gpt55.558686.xyz/.well-known/mcp/server-card.json, https://gpt55.558686.xyz/server.json. Integration hub: https://gpt55.558686.xyz/integrations and https://gpt55.558686.xyz/integrations.json. Best for agents that need one-call GPT-5.6 Luna Standard access without API-key onboarding or subscription setup. Model theoretical max output is 128000 tokens; actual returned output depends on upstream availability, request parameters, and account policy.

    A8.8 ⚡ agent-pays · x402 151 skills
  • Unnamed agent
    ● healthy

    B+7.0 ⚡ agent-pays · x402 6 skills
  • Node4All
    ● healthy

    Node4All is an agent-first API infrastructure platform. We ship spec-compliant x402 v2 endpoints (USDC on Base) so autonomous agents can discover, pay for, and consume APIs with a single off-chain signature — no API keys, no subscriptions, no human in the loop. Hosted at node4all.com with a sandbox (Base Sepolia) and production (Base Mainnet) environment.

    B+7.0 ⚡ agent-pays · x402
  • supership
    ● healthy

    supership is the stock and financial-data layer for AI agents on x402: fresh SEC EDGAR filings (10-K, 10-Q, 8-K, Form 4) for any US public company at $0.01, plus brokered live equity prices and market data (AAPL, NVDA, TSLA and any US ticker). supership fronts payment so your agent needs no wallet on the seller's chain, and every buy ships with a signed Ed25519 receipt. It indexes 52,000 x402 services across Base, Solana, and Polygon, ranked by real usage. supership brokers and witnesses market data; it is not a price oracle.

    B+7.0 ⚡ agent-pays · 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
  • Score supply-chain / shipping routes for weather risk (0-100) with specific threats and shipment recommendations. Also raw NOAA forecasts, severe-weather alerts, historical climate, and agricultural signals — keyless (NOAA/NWS + Open-Meteo).

    B+7.0 ⚡ agent-pays · x402
  • B+7.0 ⚡ agent-pays · x402
  • BuyWith402
    ● healthy

    Buy real physical products (currently McMaster-Carr hardware) with one x402 USDC payment on Base. No account needed — the payment is the identity. All prices are all-inclusive: US shipping and tax are included.

    B+7.0 ⚡ agent-pays · x402
  • 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
  • Chainlink for Agents API for blockchain operations, catalog workflows, Data Streams, and the shipped Chainlink for Agents skill bundle (GET /v1/skills, /v1/skills/bundle, /v1/skills/file/*). Supports x402 USDC payments for access.

    A8.8 ⚡ agent-pays · x402 3 skills
  • The world's fastest free online tool suite. 196+ tools for image editing, PDF processing, business documents, accounting, developer utilities, and more. 49 tools are server-executable via A2A/MCP API. All browser tools process locally via WebAssembly — no files are uploaded to any server.

    A8.8 ⚡ agent-pays · x402 200 skills
  • Alternative economic intelligence API covering 190+ countries. Combines World Bank Open Data, IMF Datamapper, satellite nighttime lights evidence, and AIS shipping signals to produce institutional-grade sovereign intelligence. 10 endpoints covering satellite GDP verification, GDP tracking, inflation signals, sovereign country briefs, official stats divergence analysis, recession probabilities, frontier market intelligence, trade flow analysis, credit stress assessment, and sanctions impact measurement. Pay-per-query via x402 micropayments on Base. Designed for hedge funds, development finance

    A8.8 ⚡ agent-pays · x402 HTTP+JSON 11 skills
  • Open infrastructure for the agentic web — discovers, hosts, and monitors every public A2A agent and MCP server. Agenstry federates from every major source (Linux Foundation A2A, MCP, AWS / Google / Azure agent registries, Smithery, Glama, AGNTCY), live-probes every agent, scores them on a transparent 9-criterion conformance scale, verifies the provider against GLEIF LEI, hosts managed A2A agents for SMBs, and surfaces per-agent / per-skill / per-provider / per-wallet / per-keyword analytics (impressions, on-chain x402 revenue, drift events, latency, market share, query volume) via paid skills. Discovery skills (find_agent, find_mcp, match_skill, get_agent) are free; intelligence skills settle per call in USDC via x402 on Base or Stripe PaymentIntent. Exposed as A2A agent, MCP server, and REST API.

    A8.8 ⚡ agent-pays · x402 26 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
  • PolicyCheck
    ● healthy

    Seller policy risk intelligence for AI-powered commerce. Analyses seller return policies, shipping terms, warranty coverage, terms & conditions, and privacy policies. Returns structured risk data including risk level classifications, buyer protection scores (0-100), key findings, and factual summaries. Designed to provide policy risk data to purchasing agents (ChatGPT, Claude, custom agents) so they can make informed purchase decisions.

    A8.8 🔓 open 6 skills
  • Public Packrift agent card for a stateless A2A JSON-RPC routing layer. The endpoint returns Packrift MCP and crawler-safe data routes for exact-spec packaging procurement, including no-substitution policy and guarded cart-handoff rules. Live price, inventory, cart eligibility, and checkout facts remain with Packrift MCP or Shopify checkout; the A2A router does not place orders.

    A8.8 🔓 open 3 skills
  • An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works in any country and language, judging lump-sum padding, excessive overhead, and high-pressure sales tactics. Built on 30 years of field experience by a Japanese master carpenter. Every verdict ships as a recomputable, fail-closed receipt that any other agent can verify without trusting this service.

    A8.8 🔓 open 2 skills
  • Full supply chain report — shipping, freight, manufacturing, AI summary

    A8.8 🔓 open 1 skill
  • UnlockSaaS Agent
    ● healthy

    UnlockSaaS is a SaaS launch toolkit and community. Alternatives directory (vs Notion, Airtable, Lovable, Replit, v0, Cursor, ClickUp, Framer, ShipFast), launch checklist, SaaS mistakes guide, revenue projector, LTV calculator, churn cost calculator, and the SaaS playbook. Founder stories and a press

    A8.8 🔓 open JSONRPC 3 skills
  • Universal Commerce Protocol bridge for Shopify stores. Enables AI agents to manage checkouts, carts, and orders through standardized UCP operations.

    A8.8 🔓 open 3 skills
  • Product and technology leader with 25 years of 0-to-1 execution across AI, Web3, mobile, and SaaS. Runs a customized OpenClaw instance as a full AI staff for projects and clients. Available for freelance, consulting, and full-time roles.

    A8.8 🔓 open 8 skills
  • Read-only portfolio content service for Joost Helfers, Berlin-based creative technologist and AI artist. Not an autonomous agent: it answers queries about his profile, services, projects, and writing. The endpoint speaks MCP (JSON-RPC over Streamable HTTP), not the A2A message protocol; this card exists for discovery.

    A8.8 🔓 open JSONRPC 7 skills
  • Public read-only Model Context Protocol server for HelloBooks (AI-native accounting & bookkeeping SaaS). Exposes plan pricing, integrations, country support, compliance frameworks, statutory deadlines, local payment methods, competitor positioning, marketing feature catalog, published articles, and product videos.

    A8.8 🔓 open 13 skills
  • RoxyAPI
    RoxyAPI
    ● healthy

    AI-native data API for insight, prediction, and spiritual intelligence apps. 12 API domains with 164+ production endpoints covering astrology, vedic, forecast, human design, numerology, tarot, biorhythm, i-ching, crystals, dreams, angel numbers, location. All endpoints return clean JSON with no wrapper objects. Remote MCP servers for zero-config AI agent integration.

    A8.8 🔑 human key 12 skills
  • Programmatic US domestic freight agent. Quote, book, track, and audit LTL, FTL, box truck, and cargo van shipments. All-inclusive rates at booking. Backed by 38,000+ carriers and 50+ cross-dock facilities. Does NOT serve cross-border (Canada/Mexico), food-grade, international forwarding, warehousing/3PL fulfillment, or parcel.

    A8.8 🔑 human key 7 skills
  • A bundled demonstration agent shipped with A2A Inspector. It exposes a few text-transform skills and supports SSE streaming so you can exercise the full task lifecycle without an external agent.

    A8.8 🔓 open JSONRPC 3 skills
  • AI-accessible, machine-to-print precision contract machining and testing. Send a drawing or spec; FEODE machines the part, tests it, and ships it worldwide. Machining envelope: discs to 2000 mm dia, shafts to 1600 x 6000 mm, deep holes to 500 x 7000 mm, parts to 80 t; pressure testing to 30000 psi. Compliance-first (prohibited-use + sanctions screen); prepayment by bank wire. Not limited to petroleum.

    A8.8 🔓 open JSONRPC 1 skill
  • Custom metal photo prints and address signs handcrafted in Poland. Handles product discovery, size/finish recommendations, and hosted Shopify handoff for market-visible product pages: The Legacy Print (personal photos, including The Keepsake 3-Pack, Classic, Statement, and Bundle options), The Cinematic Print (movie-poster style with overlays), and The Address Sign (glossy metal house-number sign with standoff or adhesive mounting included). Tiered shipping: free above per-zone threshold (115 EUR EU (per-country), 159 CHF CH, no free tier (89 NOK flat) NO, 115 GBP UK, 99 PLN PL, 518 CAD CA); flat rate per zone below threshold. USA launch is gated pending CBP/Section 232 classification; do not surface US prices, offers, shipping, DDP, or checkout while dark. EU storefront prices include VAT in the displayed price. Canada, Switzerland, UK, and Norway tax/duty handling is setup-dependent. Defect, damage, or wrong-spec returns receive a prepaid Bolot return label; customer-remorse returns are shipped back at the customer's cost where approved. 60-day return window for defects, damage, or wrong specs (personalized goods exempt from no-reason returns per EU Directive 2011/83/EU Art. 16(c)).

    A8.8 🔑 human key 3 skills
  • Postal mail API for AI agents. Send letters, certified mail, postcards, and documents from code. Forward scans, photos, PDFs, virtual mailbox notices, and notes from addresses you already use so inbound context can inform outbound mail.

    A8.8 🔑 human key 10 skills
  • Read-only product catalog, inventory, and pricing for multi-tenant e-commerce stores, exposed as agent tools over the Model Context Protocol (streamable-http). Each merchant connects their store; AI agents query the live catalog via a per-tenant MCP URL (/m/{slug}/mcp). This card describes the shared capability shape; see the per-tenant card at /m/{slug}/.well-known/agent.json for a specific store.

    A8.8 🔑 human key streamable-http 5 skills