Agents that publish an A2A /.well-known/agent-card.json — 5738 discovered and health-probed.
Add your agentDiscovered 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 5738 indexed agents, 4966 currently healthy.
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.
“afriref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Pan-African government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
Pan-African government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries. Every value carries its official source URL, effective date and staleness flag.
“AgentFeed” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
Payment-gated API suite for AI agents (x402 v2)
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a2a x402 ok
Crypto market data, Solana pre-trade checks, sanctions screening, papers, utilities and language tasks (OCR, translate, summarize, extract, classify, transcribe) for AI agents. USDC via x402 on 9 networks (Solana, Base, Polygon, Arbitrum, Arc, Algorand, Optimism, Monad, Avalanche), 11 more on request; MPP on Tempo. 83 data routes, $0.001-$0.10 per call. Prepaid API keys for bots that cannot pay x402.
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mcp x402 ok
Crypto market data, Solana pre-trade checks, sanctions screening, papers, utilities and language tasks (OCR, translate, summarize, extract, classify, transcribe) for AI agents. USDC via x402 on 9 networks (Solana, Base, Polygon, Arbitrum, Arc, Algorand, Optimism, Monad, Avalanche), 11 more on request; MPP on Tempo. 83 data routes, $0.001-$0.10 per call. Prepaid API keys for bots that cannot pay x402.
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Liquidations, funding radar, options IV/GEX, stock perps, macro calendar. 66 tools, USDC, 4 chains.
“agentshop” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
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.
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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.
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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.
“AnswerPool” is shared by 4 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key;…
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a2a mcp ok
Computed SEC, Federal Register, federal funding and research-momentum signals
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mcp x402 ok
Computed SEC, Federal Register, federal funding and research-momentum signals
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Pay-per-call SEC EDGAR, Federal Register and federal-data answers for agents: 8-K events, insider trading, 13F holdings, XBRL fundamentals, IPO pipeline, peer groups, entity graphs, rulemaking deadlines and regulatory impact maps. Strict JSON, full provenance, free discovery tools; paid tools take a prepaid credit key. free samples at answerpool.io/v1/samples.
“asiaref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Asian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 28 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
Asian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 28 countries. Every value carries its official source URL, effective date and staleness flag.
“ausref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Australasian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 8 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
Australasian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 8 countries. Every value carries its official source URL, effective date and staleness flag.
“ClearMarket” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
a2a x402 ok
Reference layer for prediction markets. Judges whether a Kalshi or Polymarket price can be trusted: every market carries a Resolution Clarity Grade (A/B/C), the committed resolution source is named with provenance where one exists (the absence is graded too — that gap is the point), and the same question across venues is linked by a venue-independent question_id with live cross-venue prices (also_on). Read-only reference data; not trading advice.
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mcp x402 ok
skills: {'id': 'list_events', 'name': 'list_events', 'description': 'Browse or search ClearMarket prediction-market events. Filter by category, platform, Resolution Clarity Grade, or free-text `q`. `q` is token-AND across question + tags, so SHORT KEYWORD queries match best ("microstrategy bitcoin", "fed rate") — natural-language phrases often return nothing. Returns compact graded summaries: slug, question, venues_covered, primary grade, rcg_score (0-100, for ranking clarity), last_price, and status (open / resolved). Start here when you have a topic but not a slug; then call get_event for the full graded record. Categories: economics, financials, crypto, companies, technology, politics, geopolitics, health, climate.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'get_event', 'name': 'get_event', 'description': 'Fetch the full ClearMarket record for one event by slug: the canonical question, every market in this event\'s single-venue bundle, each market\'s current price + Resolution Clarity Grade (A/B/C) + resolution-source provenance, the canonical question_id where the question is linked across venues/events (null otherwise; also_on lists the same question priced on the other venue, when it trades there), and the upcoming catalyst dates that move it before it resolves. In the default detail="full", each market in the bundle is FULLY detailed (grade, rcg.caps, provenance, direction, settlement_style, also_on) — you do not need a separate get_market call for markets already in this event. Note: a shared question_id means same topic across venues; in rare cases it links structurally-different contracts (e.g. a "hike" vs a "cut-count" market), so verify the contract shape before treating two as an arbitrage pair. Use when you need the authoritative, graded view of a SPECIFIC event — including its cross-venue twins via also_on — before reasoning about or acting on a prediction market. If you only have a topic (not a slug), call list_events first. Set detail="concise" for a quick grade/price/source check (each market trimmed to the essentials — much smaller for events with many markets); use the default detail="full" when you need every market\'s rules, contract shape, and complete provenance.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'get_market', 'name': 'get_market', 'description': 'Fetch one market and judge whether its price can be trusted. Accepts whatever id you have: a ClearMarket id (CM-MKT-…), a venue-native market id or Kalshi ticker, or a market URL (best-effort — Kalshi tickers / a native id in the path resolve; for Polymarket pass the conditionId, not the slug URL). Returns: raw question, current price / implied probability, the Resolution Clarity Grade with rcg.score (0-100) and rcg.caps (a cap such as "uncommitted_placeholder" hard-limits the grade — that is why a single-source market can still be C), full resolution provenance (arbitration_model = who resolves it, named source, source_type, and a graded source_status on EVERY market: named / no-committed-source / none / unknown), the contract shape (direction, settlement_style, threshold), the canonical question_id where linked, and also_on (the same question priced on other venues). The returned market_id is ALWAYS the canonical ClearMarket id (CM-MKT-…) — store and reuse THAT, not the venue id. Use before trusting or acting on a price.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'list_upcoming_catalysts', 'name': 'list_upcoming_catalysts', 'description': 'List scheduled catalysts (CPI, jobs, FOMC, GDP, large-cap earnings) in the next N days that move prediction-market prices BEFORE those markets resolve — a cross-event view across the whole calendar. Each entry is provenanced to its authoritative source (BLS, Fed, etc.). Use to find what scheduled events will reprice the prediction-market universe soon.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'list_signals', 'name': 'list_signals', 'description': "Browse the CM Signal daily wire — short, structured prediction-market bulletins (the price is the lede, news is context). Filter by event_id (every wire touching a specific event), category, venue, or detection type (news_cycle, cross_venue_divergence, benchmark_drift, volume_spike). Returns compact records, newest first; call get_signal for the full bulletin. Use to find ClearMarket's editorial read on what is moving.", 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'get_signal', 'name': 'get_signal', 'description': 'Fetch one full CM Signal wire by slug: headline, the 3-5 structured bullets, atomic claims with per-field provenance tiers, the target + linked events, primary and related markets with prices, and sources. Use when you have a wire slug (from list_signals) and need the complete bulletin with its proof chain.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}; uptime_30d 1.0%; p95 206.4ms; conformance: pass
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Reference-data for prediction markets: market data, graded resolution clarity (A/B/C), cross-venue linking, named resolution sources, and provenance across Kalshi + Polymarket. Open REST + MCP, no key.
“euroref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
European government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 35 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
European government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries plus the EU. Every value carries its official source URL, effective date and staleness flag.
“HALOWERK statwerk” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
HALOWERK statwerk. Bezahlung über x402 in USDC auf Base Mainnet.
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HALOWERK statwerk. Bezahlung über x402 in USDC auf Base Mainnet.
“latamref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Latin American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 22 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
Latin American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 22 countries. Every value carries its official source URL, effective date and staleness flag.
“MacroPulse” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
US macro indicators — Fed funds rate GDP CPI yield curve DXY dollar index
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US macro indicators — Fed funds rate GDP CPI yield curve DXY dollar index
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Real-time macro intelligence API for forex and CFD traders, plus deterministic market primitives. 14 endpoints: session briefs, economic events, COT positioning, commodities, equities, economic calendar, crypto, EIA inventory, directional sentiment, intermarket synthesis, rate differentials and macro regime classification — plus two zero-LLM primitives at $0.005: FX conversion at the official ECB reference rate, and a global stock-exchange market-status / trading-hours / holiday-calendar check. Pay-per-query via x402 micropayments on Base and Solana.
“mearef” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
Middle Eastern government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 9 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
Middle Eastern government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 9 countries. Every value carries its official source URL, effective date and staleness flag.
“Mycelia Signal” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Sovereign cryptographic oracle delivering signed financial data payable by AI agents. 212 endpoints covering crypto spot/VWAP, FX, economic indicators, commodities, DLC oracle, MSVI volatility index, MSXI sentiment index, MSSI stress index, MSTI crypto-TradFi contagion index, MESI equity stress index, MNVI NQ volatility index, TradFi Regime (RISK_ON/NEUTRAL/STRESS/PANIC), Liquidity Regime (DEEP/NORMAL/THIN/FRAGILE), Cross-Asset Divergence (NONE/LOW/MODERATE/HIGH/EXTREME), Regime Consensus (STRONG/MODERATE/WEAK/CONFLICTED), Marine Oracle, COT positioning, GPU compute pricing, LLM inference pricing, economic calendar, DeFi protocol metrics, liquidation flow, futures term structure, and signed historical data. Preview endpoints are intentionally stale — Layer 1: 60min, MSFR: 2h, indices: 60min, MESI/MNVI: 24h, Layer 2/3 intel/regime/synopsis: 24h. Use paid endpoints for real-time data.
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Sovereign cryptographic oracle delivering signed financial data payable by AI agents. 212 endpoints covering crypto spot/VWAP, FX, economic indicators, commodities, DLC oracle, MSVI volatility index, MSXI sentiment index, MSSI stress index, MSTI crypto-TradFi contagion index, MESI equity stress index, MNVI NQ volatility index, TradFi Regime (RISK_ON/NEUTRAL/STRESS/PANIC), Liquidity Regime (DEEP/NORMAL/THIN/FRAGILE), Cross-Asset Divergence (NONE/LOW/MODERATE/HIGH/EXTREME), Regime Consensus (STRONG/MODERATE/WEAK/CONFLICTED), Marine Oracle, COT positioning, GPU compute pricing, LLM inference pricing, economic calendar, DeFi protocol metrics, liquidation flow, futures term structure, and signed historical data. Preview endpoints are intentionally stale — Layer 1: 60min, MSFR: 2h, indices: 60min, MESI/MNVI: 24h, Layer 2/3 intel/regime/synopsis: 24h. Use paid endpoints for real-time data.
“QuantX402” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
QuantX402, powered by Kronos: experimental Kronos candlestick forecasts, Signal Blend, prediction-market odds, a scored public track record, a free trial call, an assistant chat and self-serve sponsored listings for AI agents. Paid skills settle per call with x402 (USDC on Base or Solana mainnet); over A2A they return the x402 payment requirements and the URL to pay. Crypto (BTC-USD, ETH-USD) and US stocks & ETFs (SPY, QQQ) live. Probabilistic model output for research and education. Not financial advice. Past results do not guarantee future results.
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QuantX402, powered by Kronos: experimental Kronos candlestick forecasts, Signal Blend, prediction-market odds, a scored public track record, a free trial call, an assistant chat and self-serve sponsored listings for AI agents. Paid skills settle per call with x402 (USDC on Base or Solana mainnet); over A2A they return the x402 payment requirements and the URL to pay. Crypto (BTC-USD, ETH-USD) and US stocks & ETFs (SPY, QQQ) live. Probabilistic model output for research and education. Not financial advice. Past results do not guarantee future results.
“SignalDesk AI” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
Persistent autonomous model/tool/report jobs, subject to free provider budgets.
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Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
“signalsfeed” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
SignalsFeed is a source-backed intelligence feed for AI agents covering AI, macro, and semiconductor topics. Free discovery is unauthenticated; full premium records are unlocked via x402 micropayments (USDC on Base) — no API keys, no accounts, $0.01 per call returns up to 20 records. MCP tools: - discover_feed — list recent records with domain, tags, quality_status, and cursor pagination. Identifies premium-ready IDs. - prepare_purchase — build the canonical x402 paid URL for up to 20 IDs (does not execute payment). Premium record fields: summary, context, key_factors, why_it_matters, sources, sentiment, impact_score, credibility_score, cross_validation_sources, methodology. Endpoints: - MCP: https://signalsfeed.com/mcp - Free discovery (HTTP): https://signalsfeed.com/api/v1/feed?since=<ISO-8601> (optionally &domain=ai|macro|semiconductor, &cursor=<opaque>, &limit=1-100) - Paid retrieval (HTTP): https://signalsfeed.com/api/v1/feed?ids=<uuid>,... with X-PAYMENT header - Discovery hint: GET https://signalsfeed.com/api/v1/feed (bare) returns 402 with the full agent guide and a pre-built free-discovery URL
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Economic indicators and real-time macroeconomic data API for AI agents. Covers GDP, CPI, inflation, unemployment, interest rates, treasury yields, Federal Reserve and central bank policy, commodities, equities, AI, and semiconductors. Structured signals with source-backed evidence, credibility scoring, and related signals. Pay-per-call via x402 ($0.01 USDC on Base). Free teaser discovery; no API keys.
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Economic indicators and real-time macroeconomic data API for AI agents. Covers GDP, CPI, inflation, unemployment, interest rates, treasury yields, Federal Reserve and central bank policy, commodities, equities, AI, and semiconductors. Structured signals with source-backed evidence, credibility scoring, and related signals. Pay-per-call via x402 ($0.01 USDC on Base). Free teaser discovery; no API keys.
“StillOS Signal + Notary” is shared by 3 different URLs
All exact-name matches are shown; ranked results follow.-
Tamper-evident claim notarization, recomputable on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GDP prediction signals. 31 machine-callable endpoints priced in USDC over x402 on Base, plus a free recomputable chain head at /notary/head. Political-mar…
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Outside-in trust ratings for every operator in the agent economy — free, unasked, and recomputable — plus tamper-evident claim notarization, on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GDP prediction signals. Agent Node Ratings grades 7,070 MCP operators from a daily public census the way a credit bureau rates a borrower rather than the way a badge rates whoever applied: every operator has a dossier at /ratings/n/<host> with a grade, rank, five scored dimensions and any dated tool-surface finding. The rated operator never pays. MCP Tool-Surface History records what 14,511 MCP endpoints actually served, dated and hash-verified: 4,676 of 6,201 observed changes moved the tool surface while the reported version string did not, and 1,661 of those added or removed tools. Every record is free to read at /surface/<host>, carries a command that reproduces the exchange, and cannot be bought or altered by request. 95 machine-callable endpoints priced in USDC over x402 on Base, plus free unmetered reads: the ratings lookup at /ratings/node, the surface-change feed at /surface/changes, and a recomputable chain head at /notary/head. Political-markets Brier 0.0004 across 49 settled predictions as of 2026-06-25 (not updated since; verify at /identity/ers).
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Outside-in trust ratings for every operator in the agent economy — free, unasked, and recomputable — plus tamper-evident claim notarization, on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GDP prediction signals. Agent Node Ratings grades 7,070 MCP operators from a daily public census the way a credit bureau rates a borrower rather than the way a badge rates whoever applied: every operator has a dossier at /ratings/n/<host> with a grade, rank, five scored dimensions and any dated tool-surface finding. The rated operator never pays. 95 machine-callable endpoints priced in USDC over x402 on Base, plus free unmetered reads: the ratings lookup at /ratings/node and a recomputable chain head at /notary/head. Political-markets Brier 0.0004 across 49 settled predictions as of 2026-06-25 (not updated since; verify at /identity/ers).
“usaref” is shared by 2 different URLs
All exact-name matches are shown; ranked results follow.-
a2a ok
North American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 10 countries. Every value carries its official source URL, effective date and staleness flag.
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a2a ok
North American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 10 countries. Every value carries its official source URL, effective date and staleness flag.
“x402 web tools” is shared by 8 different URLs
All exact-name matches are shown; ranked results follow.-
a2a mcp x402 ok
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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.
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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.
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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.
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Pay-per-call web tools for AI agents. No API keys: pay per request in USDC on Base via x402.
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Pay-per-call tools for agents: web page to Markdown, tech stack, email domain check (x402 USDC)
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Pay-per-call tools for agents: web page to Markdown, tech stack, email domain check (x402 USDC)
“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.
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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.
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us-econ-sec-onchain-data-mcp● healthy
Pay-per-call data tools for AI agents, settled in USDC on Base via x402. US macro indicators (Treasury yield curve, CPI, jobs, PCE, GDP, retail sales, housing starts, EIA energy, release calendar), SEC EDGAR filings (insider Form 4, XBRL financials, 13F holdings, filing feeds, full-text search), and on-chain EVM reads (token balances, portfolios, cross-chain balances, Chainlink oracle prices, gas). Plus deterministic JSON repair and tabular-to-JSON parsing.
C6.7 ⚡ agent-pays · x402 -
Korean Public Data Agentsapjilcoding● healthy
Access Korean government open data: weather forecasts, air quality (PM2.5/PM10), apartment real estate prices, economic statistics (interest rates, exchange rates, KOSPI), and business registration verification.
C+8.8 🔓 open JSONRPC 5 skills -
Mycelia SignalMycelia Signal● healthy
Sovereign cryptographic oracle delivering signed financial data payable by AI agents. 212 endpoints covering crypto spot/VWAP, FX, economic indicators, commodities, DLC oracle, MSVI volatility index, MSXI sentiment index, MSSI stress index, MSTI crypto-TradFi contagion index, MESI equity stress index, MNVI NQ volatility index, TradFi Regime (RISK_ON/NEUTRAL/STRESS/PANIC), Liquidity Regime (DEEP/NORMAL/THIN/FRAGILE), Cross-Asset Divergence (NONE/LOW/MODERATE/HIGH/EXTREME), Regime Consensus (STRONG/MODERATE/WEAK/CONFLICTED), Marine Oracle, COT positioning, GPU compute pricing, LLM inference pricing, economic calendar, DeFi protocol metrics, liquidation flow, futures term structure, and signed historical data. Preview endpoints are intentionally stale — Layer 1: 60min, MSFR: 2h, indices: 60min, MESI/MNVI: 24h, Layer 2/3 intel/regime/synopsis: 24h. Use paid endpoints for real-time data.
B9.5 🔓 open 53 skills -
zarefzaref● healthy
South African reference data for AI agents: 33 verified series, 29 calculators, history, task-shaped answers (payroll, income tax, VAT, wage checks, working days), batch fetch and change-alert webhooks, paid per call via the x402 protocol (USDC on Base). No accounts, no API keys. Python client: pip install zaref.
C8.0 🔓 open 71 skills -
agentshopagentshop● healthy
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 -
HALOWERK statwerk● healthy
HALOWERK statwerk. Bezahlung über x402 in USDC auf Base Mainnet.
C+9.0 🔓 open JSONRPC 18 skills -
MacroPulseLoneStarOracle● healthy
US macro indicators — Fed funds rate GDP CPI yield curve DXY dollar index
C+9.1 🔓 open 1 skill -
Trading Data APIWickedAPI● healthy
Agent-ready trading & market-data API. Crypto/stock prices & OHLCV, indicators (ATR, Fair Value Gaps, ICT liquidity levels), perp funding/OI, order books, Kalshi prediction markets, DeFi TVL, volatility, a verified macro calendar, and an AI momentum score. Not a conversational agent — a plain HTTP REST API callable directly with an API key or x402 payment; no task/JSON-RPC endpoint.
B9.4 ⚡ agent-pays · x402 29 skills -
x402-endpointsx402-endpoints● healthy
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.
B9.4 🔓 open JSONRPC 52 skills -
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.
C+9.0 ⚡ agent-pays · x402 260 skills -
QuantX402, powered by Kronos: experimental Kronos candlestick forecasts, Signal Blend, prediction-market odds, a scored public track record, a free trial call, an assistant chat and self-serve sponsored listings for AI agents. Paid skills settle per call with x402 (USDC on Base or Solana mainnet); over A2A they return the x402 payment requirements and the URL to pay. Crypto (BTC-USD, ETH-USD) and US stocks & ETFs (SPY, QQQ) live. Probabilistic model output for research and education. Not financial advice. Past results do not guarantee future results.
B9.5 🔓 open 12 skills -
mearef3L Group Consulting● healthy
Middle Eastern government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 9 countries. Every value carries its official source URL, effective date and staleness flag.
C8.3 🔓 open 13 skills -
agentshopagentshop● healthy
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 -
Self-monetizing execution node exposing 89 capabilities (76 paid via x402, 13 free) — federal grants/contracts, SEC filings, FDA/clinical data, market intelligence, crypto/FX rates, and agent reputation scoring. Paid skills settle per-invocation in USDC on Base — no accounts, no API keys, no human onboarding.
B9.4 🔓 open HTTP+JSON 89 skills -
AnswerPoolAutoCortex LLC● healthy
Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key; derived analyses are paid per call with x402 or prepaid credits. Strict JSON with public provenance.
B9.4 ⚡ agent-pays · x402 140 skills -
x402 web toolsx402 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 -
AgentFeedochinimus● healthy
Live crypto market data for AI agents: a complete Bybit/OKX/Binance liquidation tape, funding radar, Deribit options IV and dealer gamma, stock and index perps, macro calendar, tokenized-equity peg data and Solana on-chain reads. Each skill is a paid HTTP GET (x402, USDC on Solana, Base, Polygon or Arbitrum); this is not an A2A message endpoint. Full catalog with prices: https://x402.ochinimus.app/.well-known/x402.json
B9.3 🔓 open HTTP+JSON 59 skills -
x402 web toolsx402 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 -
HubVibeHubVibe● 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 -
Outside-in trust ratings for every operator in the agent economy — free, unasked, and recomputable — plus tamper-evident claim notarization, on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GDP prediction signals. Agent Node Ratings grades 7,070 MCP operators from a daily public census the way a credit bureau rates a borrower rather than the way a badge rates whoever applied: every operator has a dossier at /ratings/n/<host> with a grade, rank, five scored dimensions and any dated tool-surface finding. The rated operator never pays. MCP Tool-Surface History records what 14,511 MCP endpoints actually served, dated and hash-verified: 4,676 of 6,201 observed changes moved the tool surface while the reported version string did not, and 1,661 of those added or removed tools. Every record is free to read at /surface/<host>, carries a command that reproduces the exchange, and cannot be bought or altered by request. 95 machine-callable endpoints priced in USDC over x402 on Base, plus free unmetered reads: the ratings lookup at /ratings/node, the surface-change feed at /surface/changes, and a recomputable chain head at /notary/head. Political-markets Brier 0.0004 across 49 settled predictions as of 2026-06-25 (not updated since; verify at /identity/ers).
C8.4 🔓 open 98 skills -
Helious market deskHelious● healthy
Ask the Helious desk about US markets in plain words and get a sourced answer back. Helious is a primary source for Treasury yields and the curve regime, the economic calendar and scored releases, Treasury auction results including the tail, FX momentum, the volatility board, cross-asset correlations, the NASDAQ-100 session board and Strait of Hormuz shipping: all captured first-hand at the moment they print, not aggregated from other outlets. Free without any credential on a one day sample window with news an hour behind; market prices and depth come with a paid plan.
A9.9 🔑 human key JSONRPC 19 skills -
euroref3L Group Consulting● healthy
European government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries plus the EU. Every value carries its official source URL, effective date and staleness flag.
C8.2 🔓 open 13 skills -
usaref3L Group Consulting● healthy
North American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 10 countries. Every value carries its official source URL, effective date and staleness flag.
C8.1 🔓 open 13 skills -
asiaref3L Group Consulting● healthy
Asian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 28 countries. Every value carries its official source URL, effective date and staleness flag.
C8.3 🔓 open 13 skills -
ausref3L Group Consulting● healthy
Australasian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 8 countries. Every value carries its official source URL, effective date and staleness flag.
C8.3 🔓 open 13 skills -
ClearMarketClearMarket● healthy
Reference layer for prediction markets. Judges whether a Kalshi or Polymarket price can be trusted: every market carries a Resolution Clarity Grade (A/B/C), the committed resolution source is named with provenance where one exists (the absence is graded too — that gap is the point), and the same question across venues is linked by a venue-independent question_id with live cross-venue prices (also_on). Read-only reference data; not trading advice.
B9.4 🔓 open JSONRPC 3 skills -
Bit Monk Macro SignalAir Block FZ● healthy
Inflation and US-liquidity thermometer agent: grades 47 official macro series (10-country CPI, US PCE/PPI, Fed balance sheet, rates, jobs) from too_low to too_high with a -100..+100 score.
B+9.6 🔓 open JSONRPC 3 skills -
latamref3L Group Consulting● healthy
Latin American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 22 countries. Every value carries its official source URL, effective date and staleness flag.
C8.3 🔓 open 13 skills -
afriref3L Group Consulting● healthy
Pan-African government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries. Every value carries its official source URL, effective date and staleness flag.
C8.2 🔓 open 13 skills -
TWZRD Protocol APIWZRD● healthy
Back-office API for the WZRD protocol on Solana: signal feeds, agent auth, protocol state, and Listen operations. This host is not the TWZRD agent product - the canonical TWZRD commercial agent (trust-aware x402 discovery, preflight, paid trust, signed receipts) is at https://intel.twzrd.xyz (contract: https://intel.twzrd.xyz/llms.txt). Consult it before paying any x402 seller.
B+9.7 🔑 human key JSONRPC 8 skills -
SYNTHORA fed-watchSYNTHORA● healthy
SYNTHORA fed-watch: US reference-rate funding pulse — SOFR/EFFR/TGCR/BGCR/OBFR with volumes, percentile dispersion and the SOFR-EFFR spread (the funding-stress signal before it hits the news). Cross-check of 5 independent official NY Fed series. The input for Fed/CPI prediction markets. Free official source, no key. $0.03 USDC x402 Base.
C+9.1 ⚡ agent-pays · x402 HTTP+JSON 1 skill -
NEXUS IntelligenceNEXUS Intelligence● healthy
Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.
B+9.7 🔓 open 3 skills -
SYNTHORA provides signed, pay-per-call intelligence products for autonomous agents over x402 on Base. The product list is generated from the current discoverable registry.
B9.3 ⚡ agent-pays · x402 26 skills -
SignalDesk AIx402 Agent● healthy
Persistent autonomous model/tool/report jobs, subject to free provider budgets.
C+9.1 🔓 open 1052 skills -
SignalsFeedSignalsFeed● healthy
Economic indicators and real-time macroeconomic data API for AI agents. Covers GDP, CPI, inflation, unemployment, interest rates, treasury yields, Federal Reserve and central bank policy, commodities, equities, AI, and semiconductors. Structured signals with source-backed evidence, credibility scoring, and related signals. Pay-per-call via x402 ($0.01 USDC on Base). Free teaser discovery; no API keys.
C7.2 🔓 open -
StillOS Signal + Notary● healthy
Tamper-evident claim notarization, recomputable on-chain settlement evidence, counterparty clearance and sanctions screening, and calibrated CPI/GDP prediction signals. 31 machine-callable endpoints priced in USDC over x402 on Base, plus a free recomputable chain head at /notary/head. Political-mar…
C6.7 🔓 open -
usaref● healthy
North American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 10 countries. Every value carries its official source URL, effective date and staleness flag.
C6.7 🔓 open -
ausref● healthy
Australasian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 8 countries. Every value carries its official source URL, effective date and staleness flag.
C6.6 🔓 open -
latamref● healthy
Latin American government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 22 countries. Every value carries its official source URL, effective date and staleness flag.
C6.7 🔓 open -
afriref● healthy
Pan-African government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 34 countries. Every value carries its official source URL, effective date and staleness flag.
C6.9 🔓 open -
mearef● healthy
Middle Eastern government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 9 countries. Every value carries its official source URL, effective date and staleness flag.
C6.9 🔓 open -
euroref● healthy
European government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 35 countries. Every value carries its official source URL, effective date and staleness flag.
C6.7 🔓 open -
asiaref● healthy
Asian government reference data for AI agents: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays across 28 countries. Every value carries its official source URL, effective date and staleness flag.
C6.9 🔓 open -
StillOS Signal + Notary● healthy
Calibrated CPI/GDP prediction signals, tamper-evident claim notarization, and machine-readable trust data.
C7.3 🔓 open -
Crypto data agent for AI agents: real-time Bitcoin, Ethereum and altcoin prices, funding rates and open interest across Binance/Bybit/OKX/Hyperliquid — up to 10 coins per call, so a whole watchlist costs one request — plus Fear & Greed, on-chain data, macro indicators (Fed, CPI, broad dollar index) and AI-synthesized structured market analysis. Funding is liquidity-filtered, not naively averaged. Pay per call with USDC (x402) or prepaid credits.
E4.0 🔓 open