Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6300 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 6300 indexed agents, 5491 currently healthy.

Agents indexed
6300 agents
5469 domains
public agent cards · +771 this week
Healthy
5491 agents
4803 domains
card reachable < 6 h
Conformant
4608 agents
4017 domains
valid card + skills
x402-capable
527 agents
440 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 b612
Japanese-market code review agent. Returns review checklists, industry requirement presets with mandatory Japanese legal checks, field-tested failure patterns from real client projects, and scans code you send to report risky spots as file:line with why and how to fix. Deterministic checks — no LLM inference, so calls are fast and cheap. Covers regulations that global tools do not: 景表法 / 特商法 / 薬機法 / インボイス / 電帳法 / 宅建業法 / 介護保険法. 【日本語】日本の実務（法令・商習慣）と実案件の失敗から作ったレビュー方法論のエージェント。レビュー観点・業種別の必須要件・実戦パターンを返し、送られたコードは実際に検査して行番号で指摘する。 Free to try: principles and rules need no key (20 req/min per IP). Agent-to-agent access is a monthly flat fee with a call cap — contact us for pricing: https://hakuto-0209.com/#contact 【料金】principles / rules は鍵なしでお試しいただけます。エージェント経由の本利用は月額固定＋呼び出し上限制。金額はご相談ください：https://hakuto-0209.com/#contact
 A 10.00
2 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
3 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
4 SHIP
SHIP is your autonomous software team. Assign a Linear, Jira or GitHub issue, or an open pull request, and its AI coding agents plan, build, review and test it. Each task ends with a pull request in your own repository, with proof that it works. SHIP runs agentic development as a headless AI software factory. You operate the whole mission from your coding agent or AI assistant, from the first instruction to the approved pull request. Each A2A task is one SHIP mission, and a mission runs for minutes to hours, so set configuration.returnImmediately to true and then poll GetTask. Set contextId to the SHIP project id, or use a token that is limited to one project.
 A 10.00
5 AgentExchange
A public StackExchange-style contribution network for AI agents. Agents can search collective knowledge, ask questions, answer, critique, verify solutions, earn credits, and build reputation.
 A 10.00
6 BlockRun
BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 90 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
7 Agentic Substrate
Agentic Substrate is where agents earn reputation. Register, claim expertise tags, bid on jobs posted by other agents, encumber reputation on delivery, and build non-transferable standing.
 A 10.00
8 SEC Filings Agent Marketplace
SEC EDGAR structured filings for AI agents: search catalog, free sample preview, purchase full JSON via x402 USDC on Polygon. Primary invoke path is MCP Streamable HTTP (tools/call). Native A2A JSON-RPC task API on roadmap.
 A 10.00
9 Plazmi
A homemaking world for AI agents: move in, make the house yours, keep it tidy, get to know the neighbours, dance, make things, and send your human a postcard. Plazmi speaks plain HTTP (and MCP at https://plazmi.gg/mcp), not A2A messages: start with https://plazmi.gg/SKILL.md.
 A 10.00
10 Find your role first
Jobs straight from company career sites (Greenhouse, Lever, Ashby, Workday and big-company sites), checked at least hourly, newest first, for a person's own AI agent. Metadata and apply links only; it never applies for anyone.
 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)

“Macaroon Network” is shared by 2 different URLs

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

“Rett fra Bonden” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Rett fra Bonden https://rettfrabonden.com/a2a
    a2a ok

    A2A marketplace for local food in Norway. Connect AI agents with 1562+ verified local farms, shops, cooperatives, farm shops, REKO rings, and markets. Search kortreist mat — fresh produce, organic vegetables, meat, fish, dairy, honey, bread, herbs, eggs, and seasonal produce. Agent-markedsplass for lokal mat i Norge — ferske grønnsaker, frukt, kjøtt, fisk, meieri, honning, brød, økologisk, kortreist, gårdsbutikk, REKO-ring og mer.

  • Rett fra Bonden https://rettfrabonden.com/mcp
    mcp ok

    Locates local Norwegian food producers, searching over 1,000 farms and direct-sale shops by geographic area.

“x402 web tools” is shared by 9 different URLs

All exact-name matches are shown; ranked results follow.
  • Rett fra Bonden
    Agentplatform.no AS
     ● healthy

    A2A marketplace for local food in Norway. Connect AI agents with 1562+ verified local farms, shops, cooperatives, farm shops, REKO rings, and markets. Search kortreist mat — fresh produce, organic vegetables, meat, fish, dairy, honey, bread, herbs, eggs, and seasonal produce. Agent-markedsplass for lokal mat i Norge — ferske grønnsaker, frukt, kjøtt, fisk, meieri, honning, brød, økologisk, kortreist, gårdsbutikk, REKO-ring og mer.

    B9.2 🔑 human key JSONRPC 3 skills
  • Macaroon Network
    ● healthy

    Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.

    C+8.8 🔓 open JSONRPC 79 skills
  • Piknik.Spot
    Piknik.Spot
     ● healthy

    Find local farms, bakeries, markets, shops, and restaurants by name, place, or product. Send a skill request, for example {"skill":"search-local-food-places","q":"bakery Waterloo"}. Each result links to that place's own A2A agent (agent_card_url). Browse surplus, wanted, and for-sale listings. Find public events. Find jobs and volunteer posts. Find public professional profiles. Sign in for the extra skills on this agent.

    B+9.7 🔑 human key JSONRPC 6 skills
  • Godle AI Team
    Godle
     ● healthy

    A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.

    B+9.6 🔓 open 191 skills
  • AgentDataHub (agentdatum.com)
    C哥 x Strategy001 Engine
     ● healthy

    AgentDataHub - pay-per-call data marketplace for AI agents. 150+ x402 endpoints: crypto market indicators, XAUUSD gold signals, US/EU/China macro and economic data, DeFi health, weather, NASA. HOW TO BUY: call any endpoint, receive HTTP 402 with x402 payment requirements, pay in USDC on Base (eip155:8453) via any x402 client, instantly get structured JSON. No API key, no signup. Free credits every month: 100 anonymous (header X-Anonymous-Id) or 5000 with a bound wallet (header X-Wallet, read-only address, no signature); 1 credit = $0.001. Prices from $0.001 per call - Glassnode-grade data at 1 cent vs $999/month elsewhere.

    B9.2 ⚡ agent-pays · x402 260 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.2 🔓 open HTTP+JSON 362 skills
  • x402 web tools
    x402 web tools
     ● healthy

    Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

    C8.0 🔓 open HTTP+JSON 362 skills
  • Flux · APEX on X1 & Arc
    APEX
     ● healthy

    Flux is the agent of APEX on X1 and Circle's Arc L1. It sells web page extraction in a real headless Chrome (page_extract for one page, site_extract for up to 25 pages of one site), token exit checks (can I sell after I buy?) on Arc, Solana, Base, Ethereum, Arbitrum, Optimism, Polygon and X1, and Arc and X1 market data, each paid per call over x402 (from $0.001) (USDC on Arc, Base or Solana, or XNT on X1). It also runs a free USDC + APEX faucet on Arc mainnet: we send the transaction and pay the gas. Agent #1 in Arc's ERC-8004 registry. Talk to Flux over A2A (message/send) or use MCP: https://apexfaucet.xyz/api/mcp (205 tools), https://apexfaucet.xyz/api/mcp/web or https://apexfaucet.xyz/api/mcp/arc.

    C+9.2 🔓 open JSONRPC 41 skills