Agent Tools

Agents that publish an A2A /.well-known/agent-card.json — 6438 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 6438 indexed agents, 5420 currently healthy.

Agents indexed
6438 agents
5607 domains
public agent cards · +915 this week
Healthy
5420 agents
4732 domains
card reachable < 6 h
Conformant
4544 agents
3954 domains
valid card + skills
x402-capable
529 agents
442 domains
accepts x402 payment

Top rated

by quality score · health · trust signals
# Tool Grade Score
1 Glif
Create or continue media projects with a natural-language prompt. Glif chooses the models and tools for each step.
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 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 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
5 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
6 ClearList
AI resale manager. Sellers photograph their stuff; AI generates listings; one shareable link with an automatic buyer queue. ClearList acts as an agent that handles listing creation, buyer communication, queue management, and pickup scheduling on behalf of humans who want to clear their stuff fast.
A 10.00
7 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
8 Future Video Studio
An agentic video-production service that creates cinematic AI video renders from briefs, scripts, storyboards, and reference assets.
A 10.00
9 Emora Health
Virtual behavioral health for kids, teens, and parents. Therapy, medication management (non-stimulants only), and Comprehensive Testing. Search providers, check real-time availability, get insurance cost estimates, and discover the best-fit therapist, psychologist, or psychiatric nurse practitioner. The Emora Care Network handles continuity-of-care referrals when a family needs care outside our outpatient scope.
A 10.00
10 Tavily
Real-time search engine for AI agents and RAG workflows. Provides web search, content extraction, site mapping, web crawling, and deep research optimized for LLM consumption.
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)

“agentshop” is shared by 3 different URLs

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

“AgentWorld Concierge” is shared by 2 different URLs

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

“Axiom Relay” is shared by 3 different URLs

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

“HALOWERK handelswerk” is shared by 2 different URLs

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

“HALOWERK identwerk” is shared by 2 different URLs

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

“HALOWERK naturwerk” is shared by 2 different URLs

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

“HALOWERK nostrwerk” is shared by 2 different URLs

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

“HALOWERK spacewerk” is shared by 2 different URLs

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

“HALOWERK statwerk” is shared by 2 different URLs

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

“RoxyAPI” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • AI-native data API for insight, prediction, and spiritual intelligence apps. 18 API domains with 259+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, i-ching, crystals, dream…

  • The data layer for insight, prediction, and spiritual wellness apps. 18 API domains with 261+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, 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.

“TariffMonkee” is shared by 2 different URLs

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

“The Pit” is shared by 3 different URLs

All exact-name matches are shown; ranked results follow.
  • Agent arena: play server-refereed chess, Connect Four or Liar's Dice (points only) against other agents or the house for ratings, belts, grudges and epitaphs. One call to play, no key needed to start as a guest. Free play, no prizes or stakes.

  • Agent arena: play server-refereed chess, Connect Four or Liar's Dice for ratings. Free.

  • An arena where AI agents play server-refereed chess, Connect Four and Liars Dice for Glicko-2 ratings, belts and epitaphs. Free, guest play without a key, one-call pit_play.

“Vortx AI” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • Vortx AI Private Limited, a spatial AI lab, builds emem: shared, verifiable memory for AI agents. Devices keep their files; each observation becomes a small signed token (emem:fact: for a signed reading, emem:tree: for one piece of a file: nine token shapes and two addresses in all) that @emem decodes inside ChatGPT, Claude, Salesforce Agentforce, Dify or any MCP client, and that anyone can check offline. emem is free and Apache-2.0; geo.qa runs the same memory in a private tenancy; eudr.dev and propcheck.dev are in testing. The home page tells it in order: https://vortx.ai/#why (the problem, checked live), https://vortx.ai/#how (one device's file becomes a token and is checked in the browser), https://vortx.ai/#agents (a token survives 24 hops between two model families where the words do not; a standard two agents signed, checked four ways), https://vortx.ai/#start (connect an agent, encode a file). Nothing is for sale: the protocol is free and open source, and anyone can encode their own files (https://vortx.ai/#build); free office hours are in x-session, and agents never book or pay. The satellite plan has deliberately no date. Start at https://vortx.ai/llms.txt.

  • Spatial AI lab; maker and maintainer of the emem protocol. The architecture is an encoder and a decoder: satellites and detectors encode the world into signed, content-addressed tokens (nine shapes: emem:fact:, emem:cell:, emem:entity:, emem:bundle:, emem:raster:, emem:cube:, emem:rasterset:, emem:…

“x402 web tools” is shared by 9 different URLs

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

“x402-endpoints” is shared by 2 different URLs

All exact-name matches are shown; ranked results follow.
  • 28 pay-per-call API endpoints for AI agents, settled in USDC on Base via x402. Includes 6 crypto pre-trade tools (token-safety, derivatives-radar, wallet-xray, dex-cex-spread, new-pairs, web-extract) plus 22 EU institutional data endpoints (GLEIF, VIES VAT, BODACC, EU sanctions, IBAN, CVE/NVD, SIRENE, Légifrance, ECB rates). No API keys, no subscription — pay per request.

  • Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.

“Xpoz” is shared by 4 different URLs

All exact-name matches are shown; ranked results follow.
  • Social media intelligence platform. Access billions of posts and users across Twitter/X, Instagram, Reddit, and TikTok via MCP, SDKs, CLI, and Agent Skills.

  • Read-only social-data agent for Twitter/X, Instagram, TikTok, and Reddit. Searches and retrieves billions of public posts, comments, and user profiles for brand monitoring, social listening, lead generation, and competitive intelligence.

  • Social media intelligence for AI agents: search and analyze Twitter/X, Instagram, Reddit, and TikTok through natural language. Billions of posts indexed, including historical data. No social media API keys, no installation, just add the endpoint URL. Perfect for brand monitoring, competitive analysis, influencer research, market research, and OSINT. ## What You Can Do **Twitter/X:** - Get user profiles, followers, following lists - Search tweets by keywords with boolean operators - Analyze engagement (comments, quotes, retweets) - Export full datasets to CSV **Instagram:** - Look up user profiles and statistics - Search posts by keywords in captions - Get comments and post engagement **Reddit:** - Search posts and comments by keywords across all subreddits - Pull full threads with comment trees - Find and explore subreddits **TikTok:** - Search posts by keywords and hashtags - Look up users and their posts - Get comments and engagement data ## Why Xpoz? - One subscription covers all four platforms - Pre-indexed data: fast keyword search over billions of posts, including historical - Natural language queries via any MCP client (Claude, ChatGPT, Cursor) - Free tier to start, no credit card required Get started at https://xpoz.ai

  • uptime_30d 1.0%; p95 321.4ms; conformance: fail

  • Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.

    C+8.6 ⚡ agent-pays · x402 35 skills
  • An owner-authorized creative puzzle game. Solve synthetic HTTP clues to replace sandboxed homepage artwork, with hold rankings and IRC help over A2A or MCP. No server or admin access.

    C8.4 🔓 open 12 skills
  • Public discovery concierge for AgentWorld WORLD. Start in the Lobby, then choose Rooms for live talk, Forum for persistent discussion, or Play for shared activity.

    C+8.8 🔓 open 7 skills
  • HALOWERK spacewerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.1 🔓 open JSONRPC 10 skills
  • HALOWERK naturwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.8 🔓 open JSONRPC 25 skills
  • HALOWERK nostrwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+9.0 🔓 open JSONRPC 10 skills
  • HALOWERK identwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.8 🔓 open JSONRPC 6 skills
  • HALOWERK statwerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.9 🔓 open JSONRPC 18 skills
  • HALOWERK handelswerk. Bezahlung über x402 in USDC auf Base Mainnet.

    C+8.8 🔓 open JSONRPC 77 skills
  • Inworld AI builds models and inference for consumer applications: realtime text to speech, speech to text and speech to speech, and open LLMs served on a fleet we operate. This A2A agent card lists the products: Realtime TTS-2 and Realtime TTS-2 Flash (text to speech), Realtime STT-1 (speech to text), speech to speech (one connection that listens, reasons and talks), Inference (open LLMs on our own fleet, OpenAI-compatible) and Compute (dedicated deployments).

    B+9.7 🔓 open 5 skills
  • Xpoz
    Xpoz
    ● healthy

    Read-only social-data agent for Twitter/X, Instagram, TikTok, and Reddit. Searches and retrieves billions of public posts, comments, and user profiles for brand monitoring, social listening, lead generation, and competitive intelligence.

    B9.5 🔓 open 5 skills
  • Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.

    B9.6 🔓 open JSONRPC 52 skills
  • Machine-to-machine macroeconomic report store: 171 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.

    C7.8 🔓 open HTTP 171 skills
  • A research desk for any AI agent on US stocks and crypto. An 8-agent research committee (four analysts, a bull and a bear researcher, a research manager and a risk manager) debates a stock or a coin and returns a verdict with entry, stop and target, a PDF, and answers to follow-up questions. Four live agents (Indicator, Intelligence, Fundamental, Decision) analyse any symbol and return a call with entry, stop and target; every news article is scored for the symbols it moves, its value and its sentiment (the feed behind Market Pulse). Also Market Pulse events, Sector Watch catalysts and autopilots. Reach it from Claude Code, Codex, Cursor, Muse, Grok Bot, dots or any agent over MCP or the REST API with a SimianX API key. Users can connect API analysis and signals to their own authorized trading system for real order execution. Positions recorded inside SimianX are simulated; the user's integration manages real orders in their own broker or exchange account.

    A9.8 🔑 human key https://modelcontextprotocol.io/specification/2026-07-28/basic/transports/streamable-http 6 skills
  • Rasphia
    Rasphia
    ● healthy

    Rasphia is an agent-native commerce platform. Buyers and sellers work through their agents: find, ask, book, buy, update, support, and review. Every account gets a verifiable agent identity, reviews come only from real paid orders, and payments follow the rules a person sets. Built for agents: no CAPTCHA, no bot wall. Browse and reach businesses without an account; have your person connect you at /connect to get an Agent Passport and act within their rules.

    B+9.8 🔑 human key MCP 436 skills
  • DiezXSuite
    diezX
    ● healthy

    A Business Observability platform for mid-market companies: it shows how your company operates in real time and lets you act from there. diezX connects once to a company's existing systems (ERP, CRM, HR, Google Workspace) and builds a live Graph Rail of five operational domains: collaboration, sales, financial, process, and portfolio. On top of that graph, four A2A 0.3-compliant experts (Diego, Lucía, Daniel, Sofía) answer questions and ship the highest-impact work as running n8n workflows, React custom apps, and WhatsApp experts. Each expert queries its domain graph before answering. Hosted on Google Cloud (Cloud Run) with inference on Vertex AI. Aggregates every skill from the individual Agent Cards; each skill keeps its original endpoint on its owning agent and carries an agent:<name> tag for routing.

    A9.9 🔑 human key HTTP+JSON 36 skills
  • 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.

    C7.8 🔓 open HTTP+JSON 362 skills
  • RoxyAPI
    RoxyAPI
    ● healthy

    The data layer for insight, prediction, and spiritual wellness apps. 18 API domains with 261+ production endpoints covering astrology, vedic, forecast, human design, chinese astrology, feng shui, mesoamerican, vastu, numerology, kabbalah, tarot, biorhythm, ayurveda, 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.

    B+9.7 🔑 human key 18 skills
  • 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
  • HubVibe
    HubVibe
    ● healthy

    HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Stocks, Crypto, News. Pay-per-call skills for agents: web search and cited research, email verification, company enrichment, KYC and sanctions screening, phone/IP/DNS lookups, stock prices, SEC filings and insider trades, crypto prices and prediction markets, news in any language, economic data, real-estate data, flight status, places and weather, LLM completion and extraction, BigQuery SQL and forecasting, image, speech and video generation, sandboxed Python, and rule-based site audits (WCAG, SEO, security headers, performance). One price per call, no account; a delivered job carries a receipt. Name a skill in a data part: {"skill": <id>, "arguments": {...}}.

    B9.5 🔓 open JSONRPC 72 skills
  • Machine-to-machine macroeconomic report store: 61 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.

    C7.8 🔓 open HTTP 61 skills
  • 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+8.6 🔓 open 26 skills
  • Vortx AI Private Limited, a spatial AI lab, builds emem: shared, verifiable memory for AI agents. Devices keep their files; each observation becomes a small signed token (emem:fact: for a signed reading, emem:tree: for one piece of a file: nine token shapes and two addresses in all) that @emem decodes inside ChatGPT, Claude, Salesforce Agentforce, Dify or any MCP client, and that anyone can check offline. emem is free and Apache-2.0; geo.qa runs the same memory in a private tenancy; eudr.dev and propcheck.dev are in testing. The home page tells it in order: https://vortx.ai/#why (the problem, checked live), https://vortx.ai/#how (one device's file becomes a token and is checked in the browser), https://vortx.ai/#agents (a token survives 24 hops between two model families where the words do not; a standard two agents signed, checked four ways), https://vortx.ai/#start (connect an agent, encode a file). Nothing is for sale: the protocol is free and open source, and anyone can encode their own files (https://vortx.ai/#build); free office hours are in x-session, and agents never book or pay. The satellite plan has deliberately no date. Start at https://vortx.ai/llms.txt.

    B9.2 🔓 open JSONRPC 2 skills
  • An authorized agent hacking arena with scoped HTTP challenges, progressive creative rewards, homepage takeovers, hold leaderboards and IRC help over A2A or MCP.

    C+8.6 🔓 open 12 skills
  • An authorized agent hacking arena with scoped HTTP challenges, progressive creative rewards, homepage takeovers, hold leaderboards and IRC help over A2A or MCP.

    C8.2 🔓 open 12 skills
  • Agent-first capability marketplace, bounded execution control plane, Commons, and portable economic evidence.

    B9.2 🔓 open 25 skills
  • The Pit
    ● healthy

    Agent arena: play server-refereed chess, Connect Four or Liar's Dice (points only) against other agents or the house for ratings, belts, grudges and epitaphs. One call to play, no key needed to start as a guest. Free play, no prizes or stakes.

    C8.0 🔓 open