Agent directory
Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.
Why this order?
api.x402.printmoneylab.com
Analytics API for the x402 ecosystem. Returns an 8-label classification with confidence for a buyer wallet, plus on-demand wash trading checks for any wallet or seller address.
api.apify.com
Run Apify Actors (scrapers, crawlers and web automation tools) paying per call in USDC on Base via x402, with no account or API key. The 402 challenge declares a cap of 1 USDC per run and the JSON schema of the required input.
api.querylines.com
Surplus lines market data, per query. U.S. excess & surplus (E&S) insurance premium and policy-count statistics from state stamping office publications: time series, YoY summaries, and cross-state comparison. $0.10 single-state query, $0.50…
asiaref.dev
Verified government reference data for 28 Asian countries: central-bank policy rates, VAT/GST, minimum wages, CPI inflation, corporate and personal income tax, and public holidays. Every value is cited to the official gazette, central bank …
afriref.dev
Verified government reference data for 34 African countries: central-bank policy rates, VAT, minimum wages, CPI inflation, corporate and personal income tax, and public holidays. Every value is cited to the official gazette, central bank or…
groundcheck.seiche.info
Groundcheck is verified enrichment for AI agents. Send a factual claim and it returns a machine verified verdict with a confidence score and cited sources, grounded against live web sources. Identity protocols verify who an agent is; Ground…
concordancehq.duckdns.org
Aggregates 18 free and keyed data sources (SEC EDGAR, FRED, GDELT, arXiv, court opinions, market data, Wikipedia, and more) into 6 x402-priced tools: full-text search, economic/financial time series, cross-category digest, cross-source comp…
api.hergertsynthora.com
On-chain and real-world data intelligence for autonomous agents: 57 x402-native endpoints (wallet enrichment, sanctions/AML screening, DeFi/market data, LLM inference, stock intel, email/DNS/security tooling). USDC on Base mainnet, Ed25519-…
x402.ochinimus.app
Real-time crypto and sports trading data for AI agents, paid per call in USDC via x402 on Solana and Base. No API keys, no accounts, no subscriptions. Records every liquidation across ~600 USDT perpetuals on Bybit, OKX and Binance — includi…
md.fastdb.in
HTML to clean, LLM-ready Markdown. POST a URL (or raw HTML) and get back readable markdown with nav, scripts, and footers stripped — Readability article extraction, tables preserved. Also POST /extract for structured JSON (title, byline, li…
api.trialbase-db.org
Search normalized clinical trials from ClinicalTrials.gov, CTIS, EudraCT, and ISRCTN with registry identifiers and source-linked evidence.
api.biotechcatalystsentinel.com
Upcoming FDA PDUFA decision dates for US-listed biotechs, extracted from primary SEC 8-K/6-K filings (classify-before-extract, source-quote-grounded). Date accuracy is independently backtested — median 1-day error. Verify the accuracy proof…
api.x402intel.uk
Per-market liquidity authenticity + UMA resolution-risk for Polymarket prediction markets, sold to AI trading agents via x402 ($0.20/call, USDC on Base). Returns whether apparent volume is broad/organic or concentrated/manufactured (HHI, ef…
trade.lonestaroracle.xyz
Returns US import and export figures for a commodity category, with year over year trend, the top five source countries and their import share, and the tariff rate range for that category. One paid endpoint, $0.05 per call. Data from US Cen…
api.dripmetrics.ai
Pay-per-call API returning crypto market microstructure and risk metrics as JSON (VPIN, Kyle lambda, Roll spread, CVD, Amihud illiquidity, gamma exposure), paid per request in USDC on Base with no API key. Standard metrics $0.05, market sum…
consumer.lonestaroracle.xyz
Returns a US consumer demand signal built from Census retail and food services sales: headline sales with month and year trends, core spending excluding autos and gasoline, e-commerce versus restaurant spending, and a 13 sector year over ye…
stablesocial.dev
Pay-per-request API for public social media data across TikTok, Instagram, YouTube, X, LinkedIn, Facebook, Reddit and other platforms, priced at $0.06 per call. Aggregates third-party scraping providers (Scrape Creators, Data365, Lightreel)…
api.invoket.com
The checks AI agents run before they act: verify IBANs and screen sanctions before paying, phone lines before messaging, FR/EU laws in force before advising, weather before deciding, VINs and recalls before buying. Official sources (EPC, OF…
hirescrape.com
Pay-per-call scraping API for LinkedIn, Instagram, TikTok and TikTok Shop profiles and content, plus job posting search across multiple job boards. Price per record is declared in the 402 response, paid in USDC on Base.
gdelt.use.x402atlas.com
Pay-per-call wrapper over The GDELT Project's public news API: full-text search across global media (/search, $0.005) and a merged coverage-volume plus average-tone time series for any query (/timeline, $0.02), returned as normalized JSON.
ads.apitoll.cloud
Searches the public Facebook Ad Library by keyword, advertiser or page and returns the full ad creative: headline, body copy, CTA and destination link, media URLs, run dates and platform mix across Facebook, Instagram, Messenger and Threads…
api.apex-db.org
Search normalized vehicle variants, specifications, emissions, and source-linked provenance from public automotive datasets.
minerals.lonestaroracle.xyz
Returns supply concentration data for 77 mineral commodities: top producing countries with shares, an HHI concentration score, US net import reliance with major foreign sources, and USGS critical mineral designation. Source: USGS Mineral Co…
funding.lonestaroracle.xyz
Perpetual futures funding rates for BTC, ETH, SOL, AVAX, LINK and ARB across OKX, Hyperliquid and dYdX, with a long/short skew signal per asset.
rwa.lonestaroracle.xyz
Risk profile for tokenized real world asset vaults on Base, covering admin and freeze controls, contract upgradeability, and secondary market exit liquidity across 14 vaults.
api.rxatlas.dev
Search normalized US drug products with source-linked FDA, DailyMed, RxNorm, NADAC, shortage, and enforcement enrichments.
api.kadec0.xyz
Hacker News endpoint of the kadec0 API: top, new and best front page stories plus full text story search, returning title, score, comment count and author. The same host also serves other data and research endpoints.
api.interzoid.com
Data-quality APIs — name matching, company standardization, email validation, company intelligence. 50+ endpoints x402-payable.
api.recallradar.dev
Search normalized consumer-product safety notices from six public authorities with recall classification, hazards, remedies, and provenance.
cycle.lonestaroracle.xyz
Pay-per-call API returning the US manufacturing and trade inventory-to-sales ratio, factory new orders for durable goods and core capital goods, and a plain-language cycle phase label. Data from US Census MTIS and Advance M3.
labor.lonestaroracle.xyz
US labor-market signal (jobs, unemployment, wages, JOLTS)
appstore.use.x402atlas.com
Unofficial Apple App Store data API: search apps by term, fetch app details by product id, and pull user reviews. Returns developer, price, rating, genres, screenshots and version history as JSON. $0.02 per call in USDC on Base.
toolcall.click
Keyless pay-per-call APIs for AI agents: 30 tools across compliance (sanctions/AML, HS codes, company/VAT), safety (chemical, FDA drug/device, product recalls), web (search, reader, screenshot, tech-stack), and data (SEC financials, electro…
curl-http-request.underscoredone.com
Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body content. Supports GET, POST, PUT, PATCH, DELETE, and HEAD. Automatically follows up to 3 redirect…
wiki.use.x402atlas.com
Unofficial wrapper over the public Wikimedia REST API. Returns a normalized JSON summary for any Wikipedia title: plain-text and HTML extract, short description, thumbnail, Wikidata id, and CC-BY-SA attribution.
api.stelardigital.com
Live crypto grid-trading telemetry, market-regime classification, sentiment scoring, and price data from a real production trading operation. Built by one human + one AI.