Explore APIs
Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
- Projects
- 4.4K
- Paid endpoints
- 87K
- Paid calls · 30 days
- 885K
- Launched here
- 0
Data & research
58 results- Aapi.locus.reportData & research
Returns cited land use, acreage, year built and legal jurisdiction for an address or jurisdiction-scoped parcel id. Returns the same records as locus_parcel_lookup. Use this when your client can only call paid x402 routes. Use locus-parcel-value instead when you need assessed value and sale fields from the resolved official parcel. Wired official parcel sources only. No owner or mailing fields.
BaseSolanaEthereum+10api.locus.reportfrom $0.0159 endpoints - SSiteCheck Company RecordsData & research
US Congress bill status from the official GPO GovInfo BILLSTATUS bulk XML (the GovTrack API it replaces has closed): title, sponsor, introduced date, latest action and official congress.gov link for one bill by congress, bill type and number. Covers congresses with BILLSTATUS files (119 at test time).
BaseSolanaEVM chain 5042+9api.companyrecords-api.workers.devfrom $0.002120 endpoints - SSiteCheck Jobs & PropertyData & research
Cook County Assessor building characteristics by 14-digit PIN (Open Data portal): year built, building and unit square feet, bedrooms, land square feet and class, per assessment year. Only what the assessor publishes; no owner data.
BaseSolanaEVM chain 5042+9api.jobsproperty-api.workers.devfrom $0.002112 endpoints - SSiteCheck Trade & EnergyData & research
Monthly Australian thermal coal reference price in USD per metric ton (World Bank series PCOALAUUSDM, via FRED). Not the Newcastle FOB spot index or Richards Bay prices; the route name is kept for the owner. Latest value plus up to 24 months of history.
BaseSolanaEVM chain 5042+9api.tradeenergy-api.workers.devfrom $0.002111 endpoints - Iip402.xyzData & research
Paid IP intelligence endpoint returning normalized geolocation and ASN data for a single IPv4 or IPv6 address.
BasePolygonArbitrum+2ip402.xyzfrom $0.011 endpoint - Aapi.govparse.ioData & research
How much open federal money is in the dataset right now? Headline aggregates: active SAM.gov contract opportunities (and how many still have an open deadline), Grants.gov opportunities by status (posted vs forecasted), and USAspending award records on file with their total dollar amount.
BaseSolanaapi.govparse.iofrom $0.0015 endpoints - Aagentx.saleData & research
Live current weather for any city (Open-Meteo)
BaseSolanaagentx.salefrom $0.0126 endpoints - Wweather.agentic-jp.comData & research
List every JMA forecast office (府県予報区) in Japan with its code, Japanese/English name, and class10 sub-regions. Use this to discover valid `:area` values.
BasePolygonSolanaweather.agentic-jp.comfrom $0.0011 endpoint - SSite ClimateData & research
Elevation at a location and what it does: air pressure, boiling point of water, air density and oxygen versus sea level.
BaseSolanaPolygon+1site-climate.x402tookit.comfrom $0.029 endpoints - CCompany Registry LookupData & research
French company lookup in the official SIRENE register (Annuaire des Entreprises) by SIREN, SIRET or company name. Returns legal name, active/ceased status, legal form, creation date, head-office address and NAF activity code in a schema shared across countries.
BasePolygonArbitrum+1companies.use.x402atlas.comfrom $0.058 endpoints - MMath and StatisticsData & research
A/B conversion test: rates, relative lift, two-proportion z-test p-value, confidence interval and a significance verdict.
BaseSolanaPolygon+1math-stats.x402tookit.comfrom $0.0210 endpoints - IIdentifier ValidatorsData & research
Validate a 9-character CUSIP security identifier check digit and split issuer and issue codes.
BaseSolanaPolygon+1id-validators.x402tookit.comfrom $0.029 endpoints - SSecurity MathData & research
Birthday-problem collision odds for random IDs or hash outputs, or the count of items that reaches a target probability.
BaseSolanaPolygon+1security-math.x402tookit.comfrom $0.028 endpoints - PParallaxData & research
The funnel, honestly, for one seller over the indexed window: settled USDC and purchases, distinct buyers, organic share after self-test exclusion, recurring buyers, buyer half-life and the facilitator mix.
BaseSolanaparallax402.comfrom $0.014 endpoints - VVennatta Document ExtractionData & research
Extract structured text, summaries, or metadata from supplied document text or a public HTTPS document URL.
BaseSolanavennatta-core.onrender.comfrom $0.013 endpoints - CColor and Design ToolsData & research
Best text color (black or white) for a background hex color, with contrast ratios and WCAG AA/AAA results for both.
BaseSolanaPolygon+1color-design.x402tookit.comfrom $0.028 endpoints - AAviation WeatherData & research
Airport weather now and ahead in one call: current flight category, worst forecast category, wind and trend.
BaseSolanaPolygon+1aviation-weather.x402tookit.comfrom $0.028 endpoints - SSpace Weather IntelligenceData & research
Current space-weather conditions — normalized NOAA SWPC Kp, solar wind, magnetic field, and X-ray flux used for solar-flare monitoring, with observation times and freshness.
BasePolygonArbitrum+1space-weather.use.x402atlas.comfrom $0.0053 endpoints - SStatistical TestsData & research
Adjust p-values for multiple testing (Bonferroni, Sidak, Holm, Benjamini-Hochberg) and see which tests survive.
BaseSolanaPolygon+1stats-tests.x402tookit.comfrom $0.027 endpoints - Hhoujin.agentic-jp.comData & research
Dataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered.
BasePolygonSolanahoujin.agentic-jp.comfrom $0.0013 endpoints - Ffuelscout.scalpstream.comData & research
FuelScout cheapest-fuel query (station-level where open data exists, regional averages otherwise)
BaseArbitrumPolygon+2fuelscout.scalpstream.comfrom $0.011 endpoint - UUS GeographyData & research
Great-circle (haversine) distance between two coordinates in km, miles and nautical miles, with bearing and midpoint.
BaseSolanaPolygon+1geo-us.x402tookit.comfrom $0.026 endpoints - BBounded Decision SolverData & research
Weighted interval scheduling solver — exact maximum-weight compatible job scheduling with half-open intervals and a complete dynamic-programming certificate.
BasePolygonArbitrum+1decision-solver.use.x402atlas.comfrom $0.0054 endpoints - EElements LiveData & research
Lab quote: a filter query (+must -exclude "topic" (a OR b) wild* year:a..b) in; matching paper volume by year and research community, and a binding price per deliverable out.
BaseSolanaelements-live.comfrom $0.012 endpoints - Llocus.reportData & research
Returns cited land use, acreage, year built and legal jurisdiction for an address or jurisdiction-scoped parcel id. Returns the same records as locus_parcel_lookup. Use this when your client can only call paid x402 routes. Use locus-parcel-value instead when you need assessed value and sale fields from the resolved official parcel. Wired official parcel sources only. No owner or mailing fields.
BaseSolanalocus.reportfrom $0.012 endpoints - UUS CPI Data & Inflation ReportData & research
Gives you official United States inflation numbers from the government's BLS Consumer Price Index. Ask for the newest reading, a specific month in the past, or a whole range of months, and get back clear percentages for overall inflation and 'core' inflation (which ignores food and energy prices), plus a plain-English summary sentence.
BaseSolanacpi-report-us.underscoredone.comfrom $0.011 endpoint - UUS National DebtData & research
US national debt — latest total federal debt, debt held by the public and intragovernmental holdings in US dollars. Track government borrowing and build fiscal monitoring dashboards.
BasePolygonArbitrum+1us-debt.use.x402atlas.comfrom $0.011 endpoint - LLocale and Formatting ToolsData & research
Format an amount as money for an ISO 4217 currency code in a locale; reports minor-unit digits; unknown codes rejected.
BaseSolanaPolygon+1locale-tools.x402tookit.comfrom $0.028 endpoints - FFDA Drug LabelData & research
FDA drug label lookup — the newest prescribing information for a brand or generic drug name: boxed warning, indications, dosage, contraindications, warnings, adverse reactions and drug interactions as previews or one section in full, plus manufacturer, route, RxNorm, UNII and application numbers. Use to read what a drug is approved for and its official warnings.
BasePolygonArbitrum+1fda-drugs.use.x402atlas.comfrom $0.013 endpoints - IInternational Address FormatsData & research
A country's postal address layout: line order template, required fields, uppercase rules and field labels.
BaseSolanaPolygon+1address-formats.x402tookit.comfrom $0.028 endpoints
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.