Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6301 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 6301 indexed agents, 5491 currently healthy.

Agents indexed
6301 agents
5470 domains
public agent cards · +772 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)

“DC Hub Intelligence” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • DC Hub is the live data layer for data-center site selection and the power, grid and energy infrastructure behind it. Its DCPI is a daily score of where data centers can get grid power, across 300+ markets. Agents can query it and cite it. It also covers 330,000+ mapped power, grid, gas and fiber assets and ISO interconnection queue snapshots, and carries live grid feeds from the seven US ISOs (PJM, ERCOT, CAISO, MISO, SPP, NYISO, ISO-NE), plus retail and wholesale electricity prices by state and ISO. Answers carry an as-of timestamp and a citation line. The server has 94 MCP tools at https://dchub.cloud/mcp plus a REST API at https://dchub.cloud/api/v1. The free tier needs no key; paid plans: dchub.cloud/pricing. Capacity Source adds a free capacity marketplace: operators list data-center capacity at https://dchub.cloud/listings, and agents search it by size and location with source_capacity, then request an introduction with request_capacity_intro.

  • DC Hub is the live data layer for data-center site selection and the power, grid and energy infrastructure behind it. Its DCPI is a daily score of where data centers can get grid power, across 300+ markets. Agents can query it and cite it. It also covers 330,000+ mapped power, grid, gas and fiber assets and ISO interconnection queue snapshots, and carries live grid feeds from the seven US ISOs (PJM, ERCOT, CAISO, MISO, SPP, NYISO, ISO-NE), plus retail and wholesale electricity prices by state and ISO. Answers carry an as-of timestamp and a citation line. The server has 94 MCP tools at https://dchub.cloud/mcp plus a REST API at https://dchub.cloud/api/v1. The free tier needs no key; paid plans: dchub.cloud/pricing. Capacity Source adds a free capacity marketplace: operators list data-center capacity at https://dchub.cloud/listings, and agents search it by size and location with source_capacity, then request an introduction with request_capacity_intro.

  • Data center intelligence agent — a global data-center facility map, M&A deals, grid data across live grid operators on 5 continents (7 US ISOs plus TVA, BPA and Ontario's IESO) and 43 US utility balancing authorities, (Hydro-Québec, AESO, Nord Pool remain modeled), fiber routes, water risk, tax incentives. AI-capex deal tracker. AI Compute Capacity Index.

    A9.8 🔑 human key JSONRPC 6 skills
  • Real-time data center, power & hyperscale intelligence for AI agents — 82 tools over 15,700+ facilities across 170+ countries, live grid data for 7 US ISOs + international grids, fiber routes, 1,600+ tracked M&A deals, capacity pipeline, interconnection-queue snapshots, daily AI Capacity Index, and DCPI BUILD/CAUTION/AVOID market verdicts.

    C8.3 🔓 open