API marketplace

Search a database of 33,000+ cities worldwide (population 15,000+) from GeoNames. Find cities by name, country and minimum population, look up a city by id, or find all cities near a coordinate (radius search). Each city includes coordinates, region, population, timezone and elevation — ideal for autocompletes, location pickers, store locators and geo dashboards.

Uptime

100.0%

Latency

78ms

Subs

3,371

Official US vehicle safety data from NHTSA: look up safety recalls (campaign number, affected component, consequence and remedy), owner complaints, and NCAP 5-star crash-test ratings (overall, frontal, side and rollover) for any make, model and year. Ideal for car marketplaces, dealer tools, insurance and consumer-safety apps.

Uptime

100.0%

Latency

222ms

Subs

3,175

Real-time aircraft positions from live ADS-B data (OpenSky Network). Query all aircraft inside a geographic bounding box or track a single aircraft by its ICAO24 transponder address — returns position, barometric & geometric altitude, ground speed, heading, vertical rate, squawk and country of registration. Ideal for live maps, flight dashboards and proximity alerts.

Uptime

100.0%

Latency

154ms

Subs

4,681

Political-bias and factual-reporting ratings for 1,350+ news sources, sourced from AllSides and Media Bias/Fact Check. Look up any outlet by domain or name to get its left/center/right political lean (5-point scale) and high/mixed/low factual reliability — ideal for news aggregators, media-literacy tools and content moderation.

Uptime

100.0%

Latency

81ms

Subs

4,999

Search and filter more than 5,400 Medicare-certified hospitals across the United States and territories: filter by state, city, free-text name, hospital type (acute care, critical access, psychiatric, childrens, veterans and more), ownership category, whether the hospital offers emergency services, and the CMS overall star rating. Look up any hospital by its CMS facility id, and read metadata listing every state with its hospital count plus the available types and ownership categories for building filter UIs. Each record returns the facility id, name, full address, county, phone number, type, ownership, emergency-services flag and overall rating. Built on the official CMS Hospital General Information dataset. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for healthcare directories, patient-facing apps, insurance and care-navigation tools, and research.

Uptime

100.0%

Latency

77ms

Subs

4,849

Decode any Vehicle Identification Number (VIN) into a full, structured vehicle specification — make, manufacturer, model, year, trim, series, body class, vehicle type, drive type, doors, engine (cylinders, displacement, horsepower, configuration and primary/secondary fuel), transmission style, gross vehicle weight rating and the manufacturing plant (country, city, state, company). Partial VINs with wildcards are supported and an optional model year improves accuracy. The API also lists every vehicle make (optionally for a vehicle type such as car, truck or motorcycle) and all models for a given make and year. Backed by the official NHTSA vPIC database, with clean, predictable JSON and no raw-data wrangling. Every endpoint accepts input via the query string or the request body. Ideal for automotive marketplaces, insurance and fleet tools, dealer and parts catalogues, and vehicle-registration flows.

Uptime

100.0%

Latency

354ms

Subs

3,728

Work with USDA Plant Hardiness Zones: determine the hardiness zone for any location from its average annual extreme minimum temperature in Celsius or Fahrenheit (returning the zone code such as 6b, the zone number, subzone and the temperature range in both units), browse the complete reference of all 26 subzones from 1a to 13b with their temperature ranges and example regions worldwide, look up a single subzone by code, and find which common garden plants — fruits, vegetables, herbs, shrubs, trees, perennials, vines, bulbs, succulents and grasses — tolerate a given zone. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for gardening and plant-finder apps, AgTech and landscaping tools, nurseries and education.

Uptime

100.0%

Latency

72ms

Subs

3,779

Turn any web page into clean, readable article text and turn any RSS or Atom feed into a structured, full-text feed. Extract the main article from a URL (title, author, published date, source, lead image, reading time, word count, plain text and cleaned HTML) using readability extraction, parse a feed into its entries, and — the signature feature — produce a full-text feed where every entry carries the complete extracted article instead of just the summary. Only public http/https URLs are accepted and private or internal hosts are blocked. Every endpoint accepts input via the query string or the request body and returns lean JSON. Ideal for read-it-later apps and newsreaders, newsletters and digests, summarisers and RAG pipelines, content monitoring and archiving.

Uptime

100.0%

Latency

662ms

Subs

4,246

Classify any location's climate with the Köppen-Geiger system — the standard used across geography, ecology, agriculture and architecture. Provide a location's twelve monthly mean temperatures and precipitation totals and get back its climate code (for example Cfb or BWh), the climate group and full name, a description, and a block of derived statistics (annual mean temperature, annual precipitation, warmest and coldest month, driest month, months above 10 °C, summer-precipitation share and the aridity threshold). The hemisphere is auto-detected from the temperature curve, or you can set it explicitly. A reference endpoint returns all thirty Köppen-Geiger codes with names, groups, descriptions and example cities. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for EdTech and geography tools, AgTech and crop-suitability apps, architecture and GIS pipelines.

Uptime

100.0%

Latency

81ms

Subs

4,920

Estimate CO2e emissions for everyday activities using the official DEFRA 2023 GHG conversion factors: road and rail travel (per kilometre by vehicle type, split across passengers), flights (by airport IATA pair with great-circle distance, or by distance, across cabin classes and round trips), grid electricity (by kilowatt-hour and country carbon intensity) and direct fuel combustion (by litres and fuel type). A factors endpoint exposes every emission factor, supported vehicle and fuel type, and the country grid-intensity table. Each result returns CO2e in kilograms, tonnes and grams. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side compute (no third-party upstream), so responses are instant and always available. Ideal for travel and booking flows, sustainability dashboards, ESG and Scope-3 reporting, and carbon-aware product features.

Uptime

100.0%

Latency

74ms

Subs

3,982

Physical and orbital data for the solar system and beyond: every planet, dwarf planet, major moon and the Sun with NASA fact-sheet values (mass, radius, surface gravity, density, escape velocity, mean temperature, orbital and rotation period, semi-major axis, moon count and rings), plus a searchable catalogue of more than 6,000 confirmed exoplanets from the NASA Exoplanet Archive (radius, mass, orbital period, equilibrium temperature, distance in light-years, host star, discovery year and method). Filter exoplanets by host star, discovery method, year, size or distance, compare solar-system bodies side by side, and look up any single body or exoplanet by name. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for education, EdTech, astronomy apps, data visualisation and science tools.

Uptime

100.0%

Latency

76ms

Subs

4,814

Serve chess tactics puzzles on demand: a random puzzle (optionally constrained by theme and rating), a single puzzle by id, full search and filtering by tactic theme and difficulty rating, and the complete list of available themes. Every puzzle includes the starting position as FEN, the full solution as UCI moves, the side to move, the difficulty rating, popularity and play count, theme and opening tags and a direct link to train it on Lichess. Built on a curated 20,000-puzzle sample of the open Lichess puzzle database (CC0) spanning 73 themes and ratings from roughly 400 to 3100. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for chess apps, training tools, "puzzle of the day" features and games.

Uptime

100.0%

Latency

78ms

Subs

3,518

Look up visa requirements between 199 passports and 199 destinations: whether a passport holder needs a visa, can enter visa-free, gets a visa on arrival, an e-visa or an eTA, or is not admitted — including the allowed length of stay in days. Get a full breakdown for any passport (every destination with category counts and a passport-power mobility score), the reverse view for any destination (which passports may enter), a ranking that compares the mobility of several passports, and the list of supported countries. Countries can be given as ISO-2, ISO-3 or exact name, and every endpoint accepts input via the query string or the request body. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for travel-booking flows, relocation and immigration tools, fintech onboarding and travel apps.

Uptime

100.0%

Latency

70ms

Subs

3,583

Search and explore over 50,000 internet and FM radio stations worldwide — a fast, clean wrapper over Radio Browser with automatic mirror failover. Find stations by name, country, language, genre tag or codec, sort by votes or popularity, fetch a single station by UUID with its stream URL, favicon and metadata, list the most-voted stations, browse all countries with station counts and discover the most popular genre/format tags. Every endpoint accepts input via the query string or the request body and returns lean, predictable JSON with the playable stream URL, bitrate, codec, tags and geo where available. Ideal for radio players, music and media apps, smart-speaker skills and directory features.

Uptime

100.0%

Latency

172ms

Subs

3,184

A complete exercise and workout database covering 870+ exercises: search and filter by target muscle, required equipment, category, difficulty level, force type and mechanic, fetch a single exercise with step-by-step instructions, primary and secondary muscles and demonstration images, pull a random exercise matching any filter, and read all available facet values to build filter UIs. Every endpoint accepts input via the query string or the request body and returns lean, predictable JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for fitness and gym apps, workout planners, personal-trainer tools and health platforms.

Uptime

100.0%

Latency

76ms

Subs

4,261

Search, filter and locate breweries worldwide — a fast, clean wrapper over Open Brewery DB covering thousands of breweries across the US and beyond. Filter by city, state, country, name, postal code or brewery type (micro, nano, regional, brewpub, large, bar, contract and more), sort results nearest-first from any latitude/longitude, autocomplete brewery names for typeahead, pull random breweries, fetch a single brewery by id and read aggregate counts. Every endpoint accepts input via the query string or the request body and returns lean, predictable JSON with normalized address, coordinates, phone and website fields. Ideal for beer and travel apps, store locators, maps and directory features.

Uptime

100.0%

Latency

652ms

Subs

4,832

Look up software vulnerabilities by their CVE identifier and get clean, structured details — title, description, CVSS score, severity and vector, CWE weakness types, affected vendors and products with version ranges, and reference links — plus search every CVE that affects a given vendor or product, and stream the most recently published CVEs. Sourced from the CIRCL CVE Search service over the official CVE Record 5.1 data and returned as tidy JSON through a fast, reliable API. Ideal for vulnerability management and SOC tooling, DevSecOps and SCA pipelines, security dashboards, compliance and asset-risk monitoring.

Uptime

88.9%

Latency

582ms

Subs

4,918

A clean reference for the world’s languages. Look up any language by its ISO 639-1 (two-letter) or ISO 639-2 (three-letter) code or by name, search by English or native name, list every language with an optional right-to-left filter, or group languages by family. Each entry includes the ISO codes, English and native names, language family, a right-to-left flag and a Wikipedia link. Built on the open ISO 639 dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for internationalization and localization, language pickers and selectors, content tagging and developer tooling.

Uptime

100.0%

Latency

76ms

Subs

3,602

A worldwide airport database in one fast API: roughly 7,700 airports with IATA and ICAO codes, name, city, country, latitude and longitude, altitude and time zone. Look up any airport by its IATA (3-letter) or ICAO (4-letter) code, search by name, city or country, find the airports nearest to any coordinate within a radius (with great-circle distances, optionally only those with IATA codes), or list every airport in a country. Built on the open OpenFlights/OurAirports dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for travel and booking apps, flight trackers, logistics and routing, maps and location features.

Uptime

100.0%

Latency

82ms

Subs

4,396

Search the world’s biomedical literature and retrieve clean article metadata and abstracts, powered by the U.S. National Library of Medicine’s PubMed via NCBI E-utilities. Search 35+ million citations by keyword with relevance or date sorting, look up one or more articles by PubMed id for title, authors, journal, publication date, volume/issue/pages, DOI and publication type, or fetch the full abstract text for a paper. Authoritative open data returned as tidy JSON through a fast, reliable API. Ideal for health-tech and clinical tools, pharma and life-sciences research, systematic reviews, reference managers and academic apps.

Uptime

100.0%

Latency

620ms

Subs

3,806

Decades of historical weather for any location on Earth, from 1940 to the present. Pull daily records — temperature highs, lows and means, apparent temperature, precipitation, rain, snowfall, wind speed, gusts and direction — or an hourly series with temperature, humidity, precipitation, wind, pressure and cloud cover, or a period summary with mean temperature, the hottest and coldest day, total precipitation and wet-day counts. Global coverage from the ERA5 reanalysis archive via Open-Meteo, delivered as tidy JSON through a fast, reliable API. Ideal for agriculture and energy, insurance and risk, climate research, construction and travel planning.

Uptime

100.0%

Latency

789ms

Subs

4,972

Economic and development data for every country, drawn from the World Bank Open Data catalogue. Pull a clean time series for any of roughly 1,500 indicators — GDP, population, inflation, life expectancy, CO₂ emissions, internet use and far more — for a chosen country and year range; list and filter countries by region or income level with capital and coordinates; look up a single country; and search the indicator catalogue to discover the codes you need. Authoritative open data returned as tidy JSON through a fast, reliable API. Ideal for fintech and research, economic dashboards and BI tools, data journalism, education and development analytics.

Uptime

100.0%

Latency

274ms

Subs

3,320

High and low tide predictions for thousands of US coastal stations, powered by NOAA CO-OPS. Search the station directory by state or name, pull full station metadata (coordinates and time zone), and get tide predictions as high/low events or an hourly height series for up to seven days, in feet or metres and against the datum of your choice (MLLW, MSL, MHHW and more). Delivered through a fast, reliable API with clear errors for invalid stations. Ideal for boating and sailing, fishing and surfing, ports and logistics, beach and tourism services and coastal planning.

Uptime

100.0%

Latency

660ms

Subs

3,221

Real-time and forecast ocean conditions for any coastal or open-water location. Get the current sea-surface temperature (in °C and °F) together with a wave snapshot — height, direction, period, swell and wind-wave — pull an hourly series of temperature and waves, or a daily forecast with sea-temperature min/avg/max and wave aggregates. Global ocean coverage sourced from Open-Meteo’s Marine model, delivered through a fast, reliable API; inland coordinates return a clear not-found so you always know you have ocean data. Ideal for surf and sailing apps, fishing and diving, beach and tourism services, shipping and coastal or climate monitoring.

Uptime

100.0%

Latency

150ms

Subs

3,481