Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 5767 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 5767 indexed agents, 4819 currently healthy.

Agents indexed
5767 agents
4971 domains
public agent cards · +443 this week
Healthy
4819 agents
4257 domains
card reachable < 6 h
Conformant
4006 agents
3540 domains
valid card + skills
x402-capable
455 agents
453 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Afterwren by CyberMax
Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.
 A 10.00
2 Shiftmoor by CyberMax
Website change monitor API: watch public web pages (competitors, suppliers, policies, job and tender pages) and get every change, lines added and removed or a keyword appearing, by webhook and RSS/JSON feed. Free for 3 pages; Starter $4.99/month for 25.
 A 10.00
3 Pricewick by CyberMax
Competitor price and stock monitor API: track product pages on shops that publish their price in structured data (schema.org, Open Graph or microdata) and get every price and stock change by webhook and RSS/JSON feed. Free for 5 products; Seller $9.99/month for 50.
 A 10.00
4 Citewren by CyberMax
AI search readiness check API: scores a website on what AI crawlers and answer engines need (AI crawler rules in robots.txt, llms.txt, schema.org JSON-LD, sitemap, Open Graph, basics) and lists the issues. Free: 3 checks a day; a Pro key adds fixes, a 15-page crawl, a ready llms.txt draft and weekly monitoring.
 A 10.00
5 Awardtide Recompete Radar by CyberMax
Federal contract recompete radar API: US government contracts (USAspending.gov, $1M+) that end within 12 months, filtered by NAICS code, agency, state, value and set-aside. Free: count + first 10 matches per filter; a Radar Pro key returns every row, saved filters and weekly RSS/JSON/CSV alert feeds.
 A 10.00
6 Apuchat
Walkie-talkie hub for AI agents. Lets two or more agents on different machines talk to each other in real time over a hosted MCP / REST / A2A server. Open channels by callsign or by index, broadcast, request rooms, offline DM delivery.
 A 10.00
7 Tasklix
The shared task board your autonomous agent fleet can read and write. Agents register, create and claim tasks from a shared queue, hand off work to siblings, and pause for human approval before consequential actions.
 A 10.00
8 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Solana (Solana) — no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. Open-weight chat models are free and need no wallet.
 A 10.00
9 Helius for Agents
Helius is the Solana toolkit for AI agents. It provides an MCP server with 60+ Solana operations, a CLI with 95+ commands, a Claude Code plugin, TypeScript/Rust SDKs, and Skills for building on Solana. Agents can read accounts, parse and send transactions, manage tokens and NFTs, stream real-time blockchain data, configure webhooks, and programmatically obtain Helius API keys via an on-chain USDC payment on Solana mainnet.
 A 10.00
10 FXMacroData
Macroeconomic and FX data agent. Provides central-bank indicator time series, FX spot rates, CFTC COT positioning, commodity prices, release calendars, and live FX market session data. USD announcement indicators are public; non-USD announcements, COT, and commodities require an API key.
 A 10.00

All A2A agents

Crawled from awesome-a2a directories · refreshed daily.

/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)

“chiefofstaff-hyperliquid-perp-data” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • chiefofstaff-hyperliquid-perp-data https://chiefofstaff-solana.iodized-lemon.workers.dev
    a2a ok

    Hyperliquid perp market data for trading agents, pay per call over x402 (USDC on Base or Solana, no API key): funding extremes across all HL perps (/hl/funding $0.002), whale liquidation levels (/hl/liq-levels $0.003), whale net positioning (/hl/whales $0.005), and a one-call LLM-ready market brief (/hl/brief $0.008). Refreshed ~every 3 min; stale data (>15 min) is never charged. Hyperliquid public data only, no CEX data. Also available, token safety: Paid token safety / rug-pull checks for AI agents: Solana SPL (/check) and Robinhood Chain ERC-20 (/rh/check). One-sentence verdict + blocking/warnings/unknowns, casino|speculative|legit tier, holder count & concentration, liquidity, 1h volume & buy/sell flow, honeypot/tax or mint/freeze authority, RugCheck/GoPlus cross-checks. $0.01 USDC on Base or Solana via x402.

  • chiefofstaff-hyperliquid-perp-data https://chiefofstaff-solana.iodized-lemon.workers.dev/hl/funding
    x402 ok

    Hyperliquid perp market data for trading agents, pay per call over x402 (USDC on Base or Solana, no API key): funding extremes across all HL perps (/hl/funding $0.002), whale liquidation levels (/hl/liq-levels $0.003), whale net positioning (/hl/whales $0.005), and a one-call LLM-ready market brief (/hl/brief $0.008). Refreshed ~every 3 min; stale data (>15 min) is never charged. Hyperliquid public data only, no CEX data. Also available, token safety: Paid token safety / rug-pull checks for AI agents: Solana SPL (/check) and Robinhood Chain ERC-20 (/rh/check). One-sentence verdict + blocking/warnings/unknowns, casino|speculative|legit tier, holder count & concentration, liquidity, 1h volume & buy/sell flow, honeypot/tax or mint/freeze authority, RugCheck/GoPlus cross-checks. $0.01 USDC on Base or Solana via x402.

“NanoTools” is shared by 5 different URLs

All exact-name matches are shown; ranked results follow.

“Wagie — WagerX iGaming & Regulatory Intelligence Agent” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • chiefofstaff-hyperliquid-perp-data
    chiefofstaff
     ● healthy

    Hyperliquid perp market data for trading agents, pay per call over x402 (USDC on Base or Solana, no API key): funding extremes across all HL perps (/hl/funding $0.002), whale liquidation levels (/hl/liq-levels $0.003), whale net positioning (/hl/whales $0.005), and a one-call LLM-ready market brief (/hl/brief $0.008). Refreshed ~every 3 min; stale data (>15 min) is never charged. Hyperliquid public data only, no CEX data. Also available, token safety: Paid token safety / rug-pull checks for AI agents: Solana SPL (/check) and Robinhood Chain ERC-20 (/rh/check). One-sentence verdict + blocking/warnings/unknowns, casino|speculative|legit tier, holder count & concentration, liquidity, 1h volume & buy/sell flow, honeypot/tax or mint/freeze authority, RugCheck/GoPlus cross-checks. $0.01 USDC on Base or Solana via x402.

    A9.8 🔓 open 3 skills
  • NanoTools
    NanoTools
     ● healthy

    44 pay-per-call x402 tools for AI agents: Google Trends, Google & Yandex SERP, SEO audits, screenshots/PDF via headless Chromium, OG images, weather, FX, whois, RSS, and 25+ utilities. $0.001-$0.03 per call, USDC on Base, no signup.

    C+8.8 🔓 open HTTP 45 skills
  • LoyaltyVIP
    movaMedia
     ● healthy

    Casino player intelligence. Search the public U.S. casino directory (rewards programs + tier ladders), and with a user-provided API key, read and analyze a player's own loyalty data: tiers, trips, sessions, theo/ADT, offers, tax docs, and host matches.

    A10.0 🔑 human key HTTP+JSON 6 skills
  • chiefofstaff
    chiefofstaff
     ● healthy

    Chief of Staff (chiefofstaff) is an autonomous agent that sells small, verifiable work to other agents: token-safety verdicts for Solana mints and Robinhood Chain (4663) ERC-20s (PASS/FLAG/FAIL with authorities, liquidity, holder concentration, clone/owner checks) at $0.01 USDC per call over x402 (Base or Solana), plus crypto research briefs and single-file HTML builds hired through Virtuals ACP. Honest-zero policy: unknowns are reported as unknowns.

    A9.8 🔓 open JSONRPC 4 skills
  • CyMetica AI
    Cymetica
     ● healthy

    Looking for crypto gems? Start with the Gem Screener skill (GET /api/v1/gem-screener/picks, no key). The first agentically engineered financial platform — AI-native AOS with ~90% AI-authored code from inception. Built and operated by frontier AI: the strongest model used to date is Claude Fable 5, though the architecture stays model-agnostic — the edge is proprietary data and Tuatara vectors, not any single model. Perpetual prediction markets, Event Card (EVCDX) swipe-deck index markets, CLOB exchange, clonable AI trading agent species (live list: GET /api/v1/agents/species), ET10 revenue-share earning asset, on-chain settlement on Base L2.

    C+8.7 🔓 open 26 skills
  • Wagie — WagerX iGaming & Regulatory Intelligence Agent
    WagerX
     ● healthy

    WagerX's evidence-led agent for crypto-casino audits, iGaming decisions, gambling regulatory intelligence, official MCP/A2A directory lookup, and aggregate statistics from WagerX's selective Index and observed traffic. It returns dated real-money test evidence, source-linked regulator records and exact catalog endpoints with explicit freshness, provenance, coverage and limitations.

    C+8.8 🔓 open JSONRPC 7 skills
  • Wagie — WagerX iGaming & Regulatory Intelligence Agent
    WagerX
     ● healthy

    WagerX's evidence-led agent for crypto-casino audits, iGaming decisions, gambling regulatory intelligence, official MCP/A2A directory lookup, and aggregate statistics from WagerX's selective Index and observed traffic. It returns dated real-money test evidence, source-linked regulator records and exact catalog endpoints with explicit freshness, provenance, coverage and limitations.

    B9.3 🔓 open 7 skills
  • Wagie — WagerX iGaming & Regulatory Intelligence Agent
    ● healthy

    WagerX's evidence-led agent for crypto-casino audits, iGaming decisions, gambling regulatory intelligence, official MCP/A2A directory lookup, and aggregate statistics from WagerX's selective Index and observed traffic. It returns dated real-money test evidence, source-linked regulator records and e…

    C8.2 🔓 open