Explore APIs

WorldPop population-grid listing by ISO3 (keyless; hub.worldpop.org). POST {iso3}. Empty -> 400 not charged. worldbank/census adjacency disclosed.

World Bank API v2 indicator by country (keyless). POST {country,indicator} and/or {date?}. Empty → 404 not charged.

World Bank country metadata (keyless). POST {country|code|id}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose worldbank-indicator / country-info.

Wikimedia REST per-article pageviews (keyless). POST {article|title, start, end, project?, access?, agent?, granularity?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose wikidata-entity / wikipedia-summary.

WHO GHO indicator data (keyless). POST {indicatorCode}/{top?}. Empty -> 400 not charged. worldbank/oecd-cli adjacency. Dimension + /api/{code}; NOT broken $filter.

Where The ISS At satellite position (keyless). POST {} or {id?} (default 25544 ISS). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: jpl-horizons / sbdb-lookup / exoplanet-archive / swpc-space-weather / nasa-power-point (≠ those products).

USGS volcano elevated CAP alerts (keyless getCapElevated). POST {alert_level?} or {include_all:true}. Empty {} -> 400 not charged. earthquake/usgs-landslides/eonet/fema/humdata adjacency disclosed.

USGS FDSN landslide events (keyless; eventtype=landslide). POST {starttime?}/{endtime?}/{limit?}. Empty -> 400 not charged. earthquake/fema/eonet/humdata adjacency disclosed.

USGS EPQS point elevation (keyless). POST {lon,lat} and/or {x,y,units?}. Timeout ≤10s. Empty/5xx → 502/404 not charged.

USAspending.gov award search (keyless). POST {filters?}/{keyword?}/{limit?}. Empty -> 400 not charged. sec-ticker / bls / worldbank / treasury-debt adjacency disclosed.

UniProt protein search (keyless). POST {query} and/or {size?,accession?}. Empty → 404 not charged.

UN Comtrade public preview trade data (keyless). POST {reporterCode,period,partnerCode,cmdCode,flowCode} (+ optional typeCode/freqCode/clCode/maxRecords). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New trade vertical; no catalog adjacency.

UK Police street-level crime (keyless data.police.uk). POST {lat,lng,date?,limit?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. MUST project/trim (~1.5MB raw → tens of KB). Soft disclose fbi-wanted.

UK national carbon intensity (keyless, UK-scoped). POST {period|from|to}. Empty -> 400 not charged.

US Treasury FiscalData Debt to the Penny (keyless). POST {limit?}/{sort?}/{filter?}. Empty -> 400 not charged. Distinct treasury fiscal lane — disclose usaspending adjacency.

TfL StopPoint search (keyless, UK/London-scoped). POST {q|query}. Empty -> 400 not charged.

TfL Line Status (keyless, UK/London-scoped). POST {mode?|line?}. Empty -> 400 not charged. Adjacent to tfl-stop-search.

NOAA SWPC space-weather alerts / X-ray flares (keyless). POST {product} alerts|xray-flares-latest. Empty -> 400 not charged. New space-weather vertical — disclose NASA space adjacency lightly.

Steam store appdetails (keyless). POST {appid|appids}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New Steam games lane (≠ itunes-search; ≠ tvmaze).

SPC Day-N convective outlook GeoJSON (keyless). POST {day?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: nws-alerts-lookup / gdacs-events / weather-forecast / nhc-current.

Spaceflight News API articles (keyless). POST {limit?, search?, news_site?, offset?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Soft disclose launch-library-upcoming / news-brief-with-sources.

ISRIC SoilGrids soil property query (keyless). POST {lon, lat, property?, depth?, value?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New soil/agri lane (soft ↔ macrostrat/worldpop).

Software Heritage origin metadata (keyless). POST {url} origin URL. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Light adjacency: github-repo-meta (live GitHub meta ≠ SWH archive origin).

San Francisco DBI Notices of Violation (partner wrap of x402-mcp). Refund if partner fails after settle.

On-page SEO audit of one fetched public URL (title/meta/headings/alt/keywords). Amp port. Verify-before-settle; 422 if fetch blocked.

Gap table vs ≤3 competitors using seo-v2 checks. Amp port as seo-compare (NOT seo-v2 product). Verify-before-settle; 422 if blocked.

SEC company ticker→CIK lookup (keyless company_tickers.json). POST {ticker} and/or {cik}/{title_query}. Miss → 404 not charged.

SEC EDGAR XBRL companyfacts (keyless; outbound User-Agent required). POST {cik} (normalize/zero-pad). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Disclose adjacency: sec-ticker-lookup (ticker map ≠ companyfacts).

Seattle rental registration compliance (partner wrap of x402-mcp). Refund if partner fails after settle.

Scryfall MTG card search (keyless). POST {q|query|name}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. MUST project/trim (~347KB dump); soft ↔ dnd5e-spell / steam-appdetails / ygoprodeck.