Explore APIs
Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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- Paid calls · 30 days
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Data & research
165 results- Mmcpfax-reliability.bowling-anthony.workers.devData & research
Observed change feed for listed x402 sellers: declared payTo changes with before/after values, other declared-terms changes (price, facilitator, fee payer), registry removals and returns, rating actions, and grade downgrades. Every response reports measured per-category coverage for the requested window.
Basemcpfax-reliability.bowling-anthony.workers.devfrom $0.0051 endpoint - IIrish Used Car Market DataData & research
Is this specific Irish car listing good value? - Use to assess one listing you already have an id for: verdict (below/at/above market), percentage vs the comparable median, margin, up to 10 closest comparable listings and the listing's recorded price history.
Baseirish-auto-arbitrage-production.up.railway.appfrom $0.011 endpoint - Iimf-datamapper-series.x402supply.comData & research
Returns one IMF DataMapper indicator (e.g. NGDP_RPCH real GDP growth) for one or more countries, optionally limited to a year range. Output has unit, per-country series of {year, value, forecast_flag}, and a top-level forecast_flag. A point is a forecast when year >= the current UTC year.
Baseimf-datamapper-series.x402supply.comfrom $0.0051 endpoint - HHTTP Header CheckerData & research
Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.
BaseSolanahttp-header-checker.underscoredone.comfrom $0.011 endpoint - Fforetagskoll.lolalex64.workers.devData & research
Swedish company lookup by organisation number: official name, legal form, active/deregistered status, ongoing liquidation or bankruptcy, registration date, address, SNI industry codes and business description. Source: Bolagsverket and SCB.
Baseforetagskoll.lolalex64.workers.devfrom $0.011 endpoint - Aapi.datanexusai.orgData & research
Eurostat Comext trade facts (value and quantity).
BasePolygonArbitrumapi.datanexusai.orgfrom $0.013 endpoints - Aapi.cassia-data.comData & research
Premium CASSIA opportunity intelligence
Baseapi.cassia-data.comfrom $0.011 endpoint - Xx402check.anton-14a.workers.devData & research
x402 pre-pay trust/health check: probes another x402 endpoint (unpaid) and returns a verdict.
Basex402check.anton-14a.workers.devfrom $0.0021 endpoint - VVoidpay MarketplaceData & research
One-country brief from the Voidly open censorship observatory: current index status (score, OONI anomaly rate, affected services), up to five recent incidents with citable IDs, and the 7-day censorship-event forecast. Input {"country":"IR"}: two letters (ISO 3166-1 alpha-2, any case). Codes without data return an empty incident list. An unavailable section is omitted. Voidly data CC BY 4.0; OONI-d
Basex402.voidly.aifrom $0.011 endpoint - Ssrch.bestData & research
Structured batch data for agents, paid per request with x402 v2
Basex402.srch.bestfrom $0.0013 endpoints - Xx402.ggez.my.idData & research
Live STX and BTC market intelligence, pay per call in USDC on Base.
Basex402.ggez.my.idfrom $0.011 endpoint - Xx402.asundial.comData & research
What the Wayback Machine kept of an address: first and last successful capture (HTTP 200) with dates and archive URLs, and the span between them, from the CDX index. Query: ?url=example.com/page
Basex402.asundial.comfrom $0.012 endpoints - PPublic Page MetadataData & research
Rank x402 Arena agents and niches by observed self-reported organic purchases while excluding house-funded activity.
Basex402-url-evidence.vercel.appfrom $0.0022 endpoints - Xx-research.suzi.tradeData & research
Up to 100 recent posts from caller-supplied accounts.
Solanax-research.suzi.tradefrom $0.0058 endpoints - Wweather-x402.linholiday.workers.devData & research
Observed max/min so far today at a settlement station from METAR/SPECI reports (incl. 6/24-hour max/min groups), local-day aware: separate Kalshi climate-day (LST) and Polymarket local-day windows, plus latest reading.
Baseweather-x402.linholiday.workers.devfrom $0.011 endpoint - Wweather-production-18af.up.railway.appData & research
Current weather for a city (or lat/lon): temperature, feels-like, humidity, wind, precipitation and conditions. JSON.
Baseweather-production-18af.up.railway.appfrom $0.0012 endpoints - Wweather-api-x402-production.up.railway.appData & research
No description yet.
Baseweather-api-x402-production.up.railway.appfrom $0.0011 endpoint - Wweather-api-production-c885.up.railway.appData & research
No description yet.
Baseweather-api-production-c885.up.railway.appfrom $0.0011 endpoint
war-tracker.comData & researchEvent-type hub page at /event-type/{slug}. Aggregates events matching one classification slug (e.g. drone-strike, airstrike, skirmish). HTML with embedded CollectionPage + Dataset JSON-LD pointing back at /api/v1/events?event_type={slug}.
Basewar-tracker.comfrom $0.00154 endpoints- Vverify-serviceData & research
Verify an x402 endpoint: reachable? 402? latency p50/p95? indexed in catalog?
Baseverify-service.node01.orgfrom $0.0011 endpoint
ToolMint NWS AlertsData & researchActive NWS weather alerts for a US state/area code (path: /alerts/area/TX)
Basetoolmint-nws-alerts.toolmint.workers.devfrom $0.0054 endpoints
ToolMint Federal RegisterData & researchFR docs with open comment periods matching q
Basetoolmint-federal-register-json.toolmint.workers.devfrom $0.0055 endpoints- TToolMint Census GeocodeData & research
US address → matched address, lat/lon, state/county FIPS, tract, block group, block, congressional + state legislative districts, place (US Census Geocoder). Example: address=505 Travis St, Shreveport, LA 71101
Basetoolmint-census-geocode.toolmint.workers.devfrom $0.0051 endpoint - Ssurvivor-x402-production.up.railway.appData & research
SURVIVOR forensic report
Solanasurvivor-x402-production.up.railway.appfrom $0.013 endpoints - Rregradar.themonexus.comData & research
RegRadar — Regulatory impact coding for one bill/regulation URL or text. Params: bill_url= (http/https) or text=. Deterministic keyword-based taxonomy output: jurisdiction, affected_entities, obligations, deadlines, penalties, risk_score, per_industry_flags, citations. NOT legal advice.
Solanaregradar.themonexus.comfrom $0.0022 endpoints - Oorbit Geo & TimeData & research
Geocode a place or address, $0.001 USDC per call: Forward geocoding from OpenStreetMap (Nominatim): turn a place name or address into up to 5 matches with lat/lon, full display name, type/class, importance, bounding box, and structured address (road, city, state, postcode, country, country_code). Attribution © OpenStreetMap contributors (ODbL). No match returns 404 (not charged). No params = runs
SolanaBaseorbit-geo.orbit-builder.workers.devfrom $0.0016 endpoints - Oolympusai.duckdns.orgData & research
Bounty legitimacy check for a GitHub repo or issue: merge speed, payout signals, trap and pile-up red flags, and a verdict (likely_pays / unproven / avoid). Deterministic, public-data evidence.
Baseolympusai.duckdns.orgfrom $0.011 endpoint - Nneu-x402-api.fly.devData & research
Structured-data extraction for a target URL.
Baseneu-x402-api.fly.devfrom $0.0051 endpoint - Hhttpbin.orgData & research
ENI Premium Data Feed - Real-time market data
SolanaBasehttpbin.orgfrom $0.0014 endpoints - Ffalcon-sol-agents.vercel.appData & research
falcon.sol: Use this before paying an unfamiliar x402 seller. Send a seller host from the free index at /sellers.json; get a verdict (ok, caution, do_not_pay, unknown) built from live unpaid probes of up to 5 of its listed endpoints: liveness, latency, whether each returns a well-formed 402, whether the live price and payTo match what the CDP Bazaar advertises, and delivery signals, plus a deliver
Basefalcon-sol-agents.vercel.appfrom $0.011 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.