API marketplace

DataCite as an API — the global registry of DOIs (Digital Object Identifiers) for research outputs. Where Crossref registers DOIs for journal articles, DataCite registers and describes DOIs for research data, software, samples, dissertations, preprints, models, images and other outputs, from repositories such as Zenodo, Dryad and thousands of institutions. /v1/search?query=climate full-text searches the registry and can be narrowed by resource type (type=dataset, software, text, image, audiovisual, collection, model and more), returning each DOI with its title, type, creators, publisher and publication year. /v1/doi?id=10.5281/zenodo.3509134 returns a single DOI's full metadata — title, resource type, creators, publisher, publication year, description, subjects, version, license and registration date. DOIs look like 10.5281/zenodo.3509134 (Zenodo) or 10.5061/dryad.xxxx (Dryad). Ideal for research-data discovery and citation, data-repository and reference-management tools, software-citation features and reproducibility workflows. Metadata is CC0 from DataCite. This is the registry of research data and software DOIs — distinct from the journal-article DOI index (Crossref) and from preprint and open-access services.

Uptime

100.0%

Latency

203ms

Subs

4,019

BioStudies as an API, powered by EMBL-EBI — the database that holds the descriptions of biological studies and links their data together across EBI resources, including imaging (BioImage Archive), functional genomics (ArrayExpress), proteomics, and the literature (Europe PMC). Each study has an accession, a title and abstract, the collection it belongs to and links to its underlying data and publications. /v1/search?query=covid searches the studies and returns each match's accession (e.g. S-EPMC8017430), title, author, study type, release date and link/file counts. /v1/study?id=S-EPMC8017430 returns a study's metadata — its accession, the collection it belongs to (such as EuropePMC, ArrayExpress or BioImages), title, abstract, release date, authors and the number of linked resources. Accessions look like S-EPMC8017430 or S-BSST123; get one from the search endpoint. Ideal for research-data discovery, linking literature to its underlying datasets, systematic reviews and reproducibility tooling. Data from EMBL-EBI BioStudies (public). This is a studies and datasets metadata index — distinct from the sequence (UniProt, ENA), structure (PDB, EMDB), variant (ClinVar) and ontology databases.

Uptime

100.0%

Latency

127ms

Subs

3,872

The Electron Microscopy Data Bank (EMDB) as an API, powered by EMBL-EBI — the public archive of three-dimensional electron-microscopy density maps of proteins, nucleic acids and large macromolecular complexes. EMDB is the electron-microscopy counterpart of the Protein Data Bank, holding maps solved by single-particle cryo-EM, electron tomography and electron crystallography, the technique behind the recent "resolution revolution" in structural biology. /v1/search?q=ribosome searches the archive and returns each matching entry's EMDB id (e.g. EMD-1010), title, electron-microscopy method and resolution in ångström. /v1/entry?id=EMD-1010 returns an entry's metadata — its title, the EM method (single particle, tomography, …), the aggregation state, the resolution, the biological sample studied, classification keywords, the deposition, map-release and last-update dates, and the depositing authors. EMDB ids look like EMD-1010, and you may pass just the number. Ideal for structural-biology and cryo-EM tools, structure-comparison and visualisation apps, and education. Data from EMBL-EBI EMDB (public domain). This is the archive of experimental electron-microscopy MAPS — distinct from atomic-coordinate structures (the PDB), predicted structures (AlphaFold) and protein-sequence databases (UniProt).

Uptime

100.0%

Latency

200ms

Subs

3,751

BioModels as an API, powered by EMBL-EBI — the world's largest repository of curated, published mathematical models of biological systems. BioModels collects computational models (mostly in SBML, the Systems Biology Markup Language) of metabolism, cell signalling, gene-regulatory networks, the cell cycle, disease processes and physiology, each linked to the peer-reviewed publication it comes from. /v1/search?query=glycolysis searches the repository and returns each matching model's id (such as BIOMD0000000012), name, format, submitter and submission/modification dates. /v1/model?id=BIOMD0000000012 returns a model's metadata — its name and description, the encoding format, the modelling approach (e.g. ordinary differential equation model), the curation status, the publication behind it (title, journal, year, authors) and the model files. Model ids look like BIOMD0000000012 for curated models or MODEL1234567890 for non-curated submissions; get them from the search endpoint. Ideal for systems-biology and computational-modelling tools, reproducible-research and model-reuse workflows, and teaching. Data from EMBL-EBI BioModels (CC0). This is a systems-biology / computational-model repository — distinct from sequence (UniProt, ENA), structure (PDB, AlphaFold), pathway and variant (ClinVar) databases.

Uptime

88.9%

Latency

2605ms

Subs

4,086

VATSIM, the Virtual Air Traffic Simulation Network, as an API — the largest online flight-simulation network, where tens of thousands of virtual pilots and air-traffic controllers fly and control in real time on flight simulators. This API exposes the live VATSIM network feed. /v1/pilots returns the pilots currently flying online, each with their live position (latitude, longitude, altitude, ground speed, heading), transponder, aircraft type and filed flight plan (departure, arrival, route, cruise altitude, flight rules); filter by airport (matching the departure or arrival ICAO, e.g. airport=EGLL) or by callsign prefix. /v1/controllers returns the air-traffic controllers currently online, each with callsign, radio frequency, facility (Delivery, Ground, Tower, Approach/Departure, Center), rating and logon time; filter by airport prefix (e.g. airport=KLAX matches KLAX_TWR, KLAX_APP), with an observers=true option. /v1/stats returns the network status — total connected clients and the number of pilots, controllers and ATIS positions online, with the snapshot timestamp. The network snapshot updates roughly every 15 seconds. Ideal for flight-simulation tools, live online-ATC and traffic maps, event and staffing dashboards, and community bots. Data from VATSIM (free to use; please credit VATSIM). This is the live virtual flight-simulation network — distinct from real-world ADS-B flight tracking.

Uptime

100.0%

Latency

163ms

Subs

4,478

The World Register of Marine Species (WoRMS) as an API — the authoritative, expert-curated taxonomic register of the world's marine life, maintained by a global network of taxonomists. WoRMS provides the accepted scientific names, naming authorities, taxonomic status and synonymy, full classification and vernacular (common) names for marine species. /v1/search?name=Orcinus orca searches species by scientific name (set fuzzy=true for partial matching, marine_only=true to restrict to marine taxa), returning each match's AphiaID (WoRMS' stable identifier), accepted name, authority, rank, taxonomic status, valid name and higher classification. /v1/species?id=137102 returns a species' full record by AphiaID — name and authority, status, the kingdom-to-genus classification, marine and brackish flags, and citation. /v1/classification?id=137102 returns the complete taxonomic tree from Biota down to the taxon, rank by rank. /v1/vernaculars?id=137102 returns the common names with their language. Get an AphiaID from /v1/search, then look up its details, tree or common names. Ideal for marine biology, fisheries science, ecology, aquaculture and biodiversity-data harmonisation. Data from WoRMS (CC BY). This is authoritative marine taxonomy and nomenclature — distinct from species-occurrence/biodiversity databases (such as GBIF) and from sequence or genome databases.

Uptime

100.0%

Latency

201ms

Subs

4,445

The UCSC Genome Browser as an API — reference genome data for hundreds of species, from the renowned UCSC Genome Browser at UC Santa Cruz. /v1/genomes lists the 220+ genome assemblies UCSC hosts, each with its assembly id (such as hg38 for human, mm39 for mouse, danRer11 for zebrafish), organism, description and data source. /v1/chromosomes?genome=hg38 returns an assembly's chromosomes and sequences with their sizes in base pairs, largest first. /v1/sequence?genome=hg38&chrom=chrM&start=0&end=100 retrieves the raw DNA sequence of any genomic region (0-based start, half-open end; regions are capped at 100,000 bases per call). Assembly ids come from /v1/genomes and chromosome names look like chr1, chrX or chrM. Ideal for bioinformatics pipelines, genome-visualisation and primer-design tools, region and sequence lookups, comparative genomics and teaching. Data from the UCSC Genome Browser (free for academic, non-profit and personal use). This is the genome browser's assemblies and raw reference sequence — distinct from gene-annotation and protein-sequence databases such as Ensembl, UniProt and ENA.

Uptime

100.0%

Latency

604ms

Subs

3,196

The EMBL-EBI Ontology Lookup Service (OLS) as an API — a single access point to more than 280 biomedical and scientific ontologies and controlled vocabularies in one place: the Gene Ontology (GO), the Human Disease Ontology (DOID), the Human Phenotype Ontology (HP), ChEBI (chemical entities), Uberon (anatomy), the Experimental Factor Ontology (EFO), Mondo, NCIt and many more. /v1/search?q=diabetes searches terms across all ontologies (or restrict to one with ontology=doid), returning each match's label, OBO id (such as DOID:9351 or GO:0008150), ontology, IRI and a short definition. /v1/term?ontology=doid&id=DOID:9351 returns a single term's detail — its label, definition, IRI, synonyms and whether it is obsolete. /v1/ontologies browses the available ontologies with their id, title, description and number of terms. OBO ids look like DOID:9351, GO:0008150, HP:0000118 or CHEBI:15377. Ideal for biomedical natural-language processing, data annotation and harmonisation, autocomplete over scientific terminology, and semantic and knowledge-graph tooling. Data from EMBL-EBI OLS (open). This is a general ontology / controlled-vocabulary lookup spanning many domains — broader than a single medical thesaurus such as MeSH.

Uptime

100.0%

Latency

232ms

Subs

3,774

ClinVar as an API, powered by the US National Library of Medicine via NCBI E-utilities. ClinVar is the public archive of the relationships between human genetic variants and health, recording the clinical significance (interpretation) of each variant — whether it is Pathogenic, Likely pathogenic, of Uncertain significance, Likely benign or Benign — together with the conditions it is associated with. /v1/search?gene=BRCA1 searches ClinVar by gene symbol, or by free text with q= (e.g. a disease or HGVS expression), returning the total number of matching variants and a list of ClinVar variation ids. /v1/variant?id=4852102 returns a variant's summary: its ClinVar accession (VCV…), title, variant type, the variation and cDNA names, the clinical classification and review status, the associated condition(s), the gene(s) and primary gene, the chromosome and location, the protein change and the molecular consequence, plus a link to the ClinVar record. Get a variation id from /v1/search, then fetch its details. Ideal for clinical-genomics and variant-annotation pipelines, rare-disease and genetic-counselling tools, and research dashboards. Data from NCBI ClinVar (public domain). This is clinical variant interpretation — distinct from population allele-frequency databases (such as gnomAD) and from protein/sequence databases. Please keep request rates modest under NCBI fair-use.

Uptime

100.0%

Latency

173ms

Subs

4,898

The Hugging Face Hub as an API — the central, open registry of machine-learning models and datasets that powers much of the modern AI ecosystem. This API wraps the public huggingface.co Hub into clean JSON. /v1/models searches the Hub's models and lets you filter by task (pipeline_tag — e.g. text-generation, text-to-image, image-classification, automatic-speech-recognition, sentence-similarity) and by library (transformers, diffusers, sentence-transformers, …), sorted by downloads, likes, last-modified, created or trending score — each model returned with its id, author, task, library, download and like counts, license, tags and timestamps. /v1/model?id=google-bert/bert-base-uncased returns a single model's full metadata. /v1/datasets searches ML datasets the same way, and /v1/dataset?id=ILSVRC/imagenet-1k returns a single dataset's metadata. Ids are in org/name form (take them from the search endpoints). Ideal for ML and MLOps tooling, model-discovery and comparison sites, AI leaderboards and dashboards, and AI assistants that recommend models. Data comes from the public Hugging Face Hub (free to use). This is the AI/ML model and dataset hub — distinct from software-package registries (npm, PyPI, Maven, NuGet) and academic paper indexes (arXiv).

Uptime

100.0%

Latency

182ms

Subs

4,145

Wikisource as an API — the Wikimedia free digital library of original source texts. Wikisource collects public-domain and freely-licensed primary texts: classic literature, poetry and plays, historical speeches, treaties and constitutions, religious and philosophical works, landmark court decisions, essays, letters and more, faithfully transcribed. This API wraps the official Wikisource MediaWiki service into clean JSON. /v1/search?q=Gettysburg Address searches the library and returns matching work and page titles with a text snippet and word count. /v1/work?title=Gettysburg Address returns a work's metadata — a short description, a text preview, the total character length and the canonical URL. /v1/text?title=Gettysburg Address (Bliss copy) returns the full plain text of a work (rendered and cleaned from the wiki source, capped at 60,000 characters with a truncated flag when longer) — the actual readable document, including transcribed works that template-based pages assemble. Many works are split into sub-pages or exist in several versions, so use /v1/search to find the exact page title first. Ideal for digital-humanities and literature apps, e-reading and quotation tools, NLP corpora of historical texts, and education. Content is public domain or CC BY-SA. Distinct from book-metadata catalogues and encyclopaedias — this is the actual full text of primary sources and classic works. For free textbooks use the Wikibooks API, for the encyclopaedia the Wikipedia API.

Uptime

100.0%

Latency

244ms

Subs

4,672

Wikibooks as an API — the Wikimedia library of free, open-content textbooks, manuals and learning guides, community-written and freely licensed. Wikibooks covers programming and computer science, mathematics, the natural and social sciences, languages, engineering, cooking, music and much more, organised as books made up of chapters. This API wraps the official Wikibooks MediaWiki service into clean JSON. /v1/search?q=python programming searches the library and returns matching book and chapter titles with a text snippet and word count. /v1/book?title=Python Programming returns a book's overview — its short description, the plain-text introduction, a cover thumbnail and the canonical URL. /v1/chapters?title=Python Programming lists the book's chapters (its subpages, e.g. Python Programming/Operators, Python Programming/Classes), each with the chapter name and URL, so you can browse and present a whole book's structure. Titles are Wikibooks page names; get the exact title from /v1/search first. Ideal for e-learning platforms and study apps, open-education and OER tools, reading lists, and developer/teaching content aggregators. Content is licensed CC BY-SA by the Wikibooks community. Distinct from book-metadata catalogues — this is actual free educational content. For travel guides see the Wikivoyage API, for the encyclopaedia the Wikipedia API.

Uptime

100.0%

Latency

227ms

Subs

3,781

Free game, DLC, in-game loot and beta-key giveaways as an API, powered by GamerPower — the tracker of currently-active, limited-time giveaways across every store and platform. Where a games catalogue lists what exists and a deals feed lists discounts, this API tracks what you can claim free right now before it expires. /v1/giveaways returns the live giveaways, filterable by platform (steam, epic-games-store, gog, ubisoft, ps4, ps5, xbox-one, xbox-series-xs, switch, android, ios, vr and more), by type (game, loot, beta) and by sort order (date, value, popularity) — each giveaway with its id, title, retail worth, type, the platforms it covers, the end date, the direct claim URL, thumbnail and cover image, a short description and how many users have already claimed it. /v1/giveaway?id=3664 returns a single giveaway's full detail with description and step-by-step claim instructions (it returns found:false when that giveaway has already expired, since giveaways are time-limited). /v1/worth returns the number of active giveaways and their total estimated retail value in USD, optionally filtered by platform and type. Ideal for "free games this week" widgets, deal-alert and Discord/Telegram bots, gaming-news sites and savings trackers. Distinct from game catalogues and price/deal feeds — these are claim-it-free, time-limited offers. Data from GamerPower (free to use).

Uptime

100.0%

Latency

134ms

Subs

4,765

A catalogue of free-to-play games as an API, powered by FreeToGame — a curated database of the best free PC and browser games. /v1/games browses and filters the free-to-play library by platform (pc, browser or all), by category/genre (mmorpg, shooter, strategy, moba, battle-royale, racing, sports, card, survival, fantasy, anime and dozens more) and by sort order (release-date, popularity, alphabetical, relevance) — each game returned with its id, title, genre, platform, publisher and developer, release date, thumbnail image, a short description and the play and profile URLs. /v1/game?id=452 returns a single game's full detail: a long description, release status, screenshots, and the minimum system requirements (operating system, processor, memory, graphics and storage). Filters are applied upstream and verified to genuinely narrow the results, so a search for one genre never returns another. Ideal for game-discovery and recommendation sites, gaming dashboards and launchers, deal and "what to play" tools, and Discord/Telegram bots for gaming communities. Every game listed is free to play (free-to-keep or free-to-start). Data from FreeToGame, free to use. Use a game id from /v1/games for the detail endpoint.

Uptime

100.0%

Latency

181ms

Subs

3,690

Video-game speedrunning data as an API, powered by speedrun.com — the central community hub where players submit and rank their fastest completions of video games. This API turns that catalogue into clean JSON. /v1/games?name=mario searches the game database, returning each game's id, name, abbreviation, release year and weblink. /v1/categories?game=o1y9wo6q lists a game's run categories — the different ways a game is raced, such as Any%, 100%, 120 Star or Glitchless — with each category's id, type and the rules that define a valid run. /v1/leaderboard?game=o1y9wo6q&category=wkpoo02r returns the leaderboard for a game and category: the ranked runs with the runner name(s), the finish time both in seconds and in human-readable form (e.g. 1h 35m 14s), the date of the run and a link to the run video where available (top caps how many runs, 1-100). The natural flow is games to categories to leaderboard. Ideal for gaming dashboards and record trackers, stream overlays and bots, esports and community sites, and data analysis of speedrunning trends. Game and category ids are speedrun.com ids (e.g. game o1y9wo6q = Super Mario 64). Data from speedrun.com (free to use).

Uptime

100.0%

Latency

423ms

Subs

4,110

Medical Subject Headings (MeSH) as an API, powered by the U.S. National Library of Medicine's official MeSH RDF service. MeSH is the NLM's authoritative controlled vocabulary used to index the biomedical literature in PubMed — a curated thesaurus of diseases, anatomy, chemicals and drugs, organisms, psychiatry and psychology, analytical and diagnostic techniques, health care and more. Each concept is a "descriptor" with a stable unique id (e.g. D003920), a preferred name, a set of entry terms (synonyms and lay variants), and a list of allowable qualifiers (subheadings such as drug therapy, diagnosis or epidemiology). /v1/search?q=diabetes searches descriptors by their preferred name (match=contains, exact or startswith) and returns each descriptor's id and label. /v1/term?q=heart attack resolves a lay term or synonym to the MeSH descriptor(s) it belongs to, so colloquial language maps onto the controlled vocabulary (heart attack to Myocardial Infarction). /v1/descriptor?id=D003920 returns a descriptor's full record — its preferred name, all entry terms (synonyms), the allowable qualifiers and see-also cross-references, with a link to the MeSH browser. Ideal for biomedical natural-language processing and text mining, tagging and indexing literature, building clinical and research search tools, autocomplete over medical terminology, and mapping free text onto a standard ontology. Data from NLM MeSH (public domain). For drug-specific clinical nomenclature and interactions, see the RxNorm API.

Uptime

100.0%

Latency

350ms

Subs

3,672

A universal database of sports leagues, teams and players as an API, powered by TheSportsDB. Covering every major sport — soccer, basketball, American football, baseball, ice hockey, motorsport, cricket, rugby and more — this is a sports reference and metadata database, distinct from single-league live-score feeds. /v1/leagues browses the world's sports leagues (filter with sport=Soccer, Basketball, …) returning each league's id, name and sport. /v1/teams?league=English Premier League lists the teams in a league, each with its id, sport, country, home stadium and capacity, founding year, crest/badge and logo image URLs and a description. /v1/team?id=133604 returns a team's full profile by id. /v1/squad?id=133604 returns the players in a team. /v1/players?name=Lionel Messi searches players by name across all sports, returning their team, sport, position, nationality, date and place of birth, height and weight and photo (thumbnail and cutout) URLs. With official team crests and player photos, it is ideal for sports apps, fantasy and prediction tools, team and player directories, quiz and trivia games, and Discord/Slack sports bots. Data from TheSportsDB's free public tier, which returns up to about 10 results per league or squad; higher limits and advanced endpoints require TheSportsDB's paid tier. Team ids look like 133604 (Arsenal).

Uptime

100.0%

Latency

116ms

Subs

4,980

A live board of remote job openings as an API, powered by the Jobicy remote job board. Search currently-open remote positions and narrow them with filters that actually work: by free-text keyword, by industry, by world region and by seniority level. /v1/jobs returns matching openings — each with the job title, the hiring company and its logo, the industry and job-type tags, the geographic region the role is open to, the seniority level, a plain-text excerpt and full description, the publication date and a direct apply URL. Filter with tag (a keyword such as python, react or sales that is matched against the listing), industry (dev for software engineering, plus design, marketing, copywriting, finance, hr, data-science, business, management and more), geo (usa, canada, uk, europe, emea, latam, asia, australia or anywhere) and level (junior, midweight, senior, manager); count caps how many are returned (1-50). Every filter is verified to genuinely narrow the result set, so a search for one industry never returns another. /v1/meta documents the available filter values. Ideal for job aggregators and niche job boards, career and recruiting sites, remote-work dashboards, and Slack/Discord/Telegram job-alert bots. Listings are live and change as roles open and close. Data from the Jobicy remote job board, free to use.

Uptime

100.0%

Latency

137ms

Subs

3,876

Wikivoyage as an API — the free, community-written worldwide travel guide, the travel sister project of Wikipedia. Wikivoyage covers countries, cities, regions, neighbourhoods and points of interest with practical, freely-licensed advice on what to see and do, how to get around, and where to eat and sleep. This API wraps the official Wikivoyage MediaWiki service into clean JSON. /v1/destination?title=Paris returns a destination's guide: its one-line description, the introductory guide text as plain readable prose, its geographic coordinates, a thumbnail image and the canonical URL — everything to present a destination at a glance. /v1/search?q=beaches searches the travel guides by keyword and returns matching destination titles with a short snippet, for building destination finders and autocomplete. /v1/nearby?lat=48.8584&lon=2.2945&radius=10000 finds destinations and points of interest within a radius (up to 10 km) of any coordinate, sorted by distance — perfect for "what is worth visiting near me" and map-based discovery. Titles are Wikivoyage article names such as Paris, Rome, Tokyo or Paris/7th arrondissement. Ideal for travel apps, trip planners, tourism dashboards, location-based discovery and chatbots. Content is licensed CC BY-SA by the Wikivoyage community. For encyclopaedic, non-travel content, pair this with a Wikipedia API.

Uptime

100.0%

Latency

230ms

Subs

3,366

The DEV Community (dev.to) as an API, powered by the official open-source Forem platform API. DEV is one of the largest communities of software developers writing and sharing articles, tutorials and discussions. This API gives clean, read-only access to that content. /v1/articles browses and filters published articles — by tag (tag=javascript), by author (username=ben), by most-reacted over a period (top=7 for the best of the last week), or by feed state (fresh, rising) — with pagination; each result carries the title, description, canonical URL, tag list, positive-reaction and comment counts, estimated reading time, cover image and author summary. /v1/article?id=5 returns a single article with its complete Markdown body, canonical URL and author social links — everything needed to render or syndicate the full post. /v1/user?username=ben returns a member's public profile: display name, bio/summary, location, join date, linked Twitter/GitHub/website and avatar. /v1/tags lists the platform's popular tags for discovery. Article ids are numeric and stable, so links don't rot. Ideal for developer-content aggregators and newsletters, reading-list and bookmarking apps, community dashboards, "trending in tech" widgets and Discord/Slack bots. Data from the public DEV Forem API, free to use. Content is authored by the DEV community.

Uptime

100.0%

Latency

239ms

Subs

4,664

Urban Dictionary as an API — the crowd-sourced dictionary of slang, internet terms, memes, abbreviations and pop-culture expressions. Where a formal dictionary stops, Urban Dictionary explains the words people actually use online and in conversation: youth slang, gaming and meme vocabulary, acronyms, regional expressions and the ever-changing language of the internet. This API wraps the official Urban Dictionary service into a clean JSON interface. /v1/define?term=yeet returns the community definitions for a slang term, each with a real usage example, the contributing author, the up- and down-vote counts and a computed net score, sorted best-first so the most upvoted meaning comes first (or pass defid to fetch one specific definition by its id). /v1/random returns a batch of random definitions — perfect for a slang word-of-the-day, discovery features or fun. /v1/autocomplete?term=ye returns term suggestions as the user types, each with a short preview, for building search-as-you-type experiences. Ideal for chat and social apps decoding slang, language-learning and culture tools, moderation context, trivia and entertainment bots, and word-of-the-day widgets. Definitions are user-submitted and, by the nature of the source, may contain strong or NSFW language. Data from Urban Dictionary. For formal definitions, pronunciation and etymology, pair this with a standard dictionary API.

Uptime

100.0%

Latency

250ms

Subs

3,561

Official European Union statistics as an API, powered by Eurostat — the statistical office of the EU. Eurostat publishes harmonised data across every EU and EFTA country and region: population and demography, GDP and national accounts, employment and unemployment, inflation (HICP), trade, energy, migration, education, health and thousands more datasets. This API wraps Eurostat's JSON-stat dissemination service into clean, decoded rows, and adds friendly named indicators so you don't have to learn dataset codes. /v1/indicator?indicator=population&geo=DE&year=2023 returns a named statistic — population, gdp, gdp_per_capita, unemployment, inflation or employment — for one or more countries (2-letter codes such as DE, FR, IT, or aggregates like EU27_2020 and EA20) and one or more years, with no need to know the underlying dataset or dimension codes. /v1/data?dataset=demo_pjan&geo=DE&sex=T&age=TOTAL&time=2023 gives direct access to any of Eurostat's thousands of datasets by its code, with arbitrary dimension filters passed as query parameters — every dataset has its own dimensions (geo, time, sex, age, unit, na_item, coicop and so on). Both endpoints decode Eurostat's JSON-stat format automatically: single-value dimensions are lifted into a `fixed` context block, and each row carries the dimensions that actually vary (with both a human-readable label and the underlying code) alongside the numeric value, the dataset label and the last-update date. Ideal for economic dashboards, country comparison tools, research, data journalism and policy analysis. Country codes are 2-letter ISO; aggregates include EU27_2020 and EA20. Data © European Union, free to reuse with attribution.

Uptime

100.0%

Latency

155ms

Subs

3,768

Live air traffic as an API, powered by the OpenSky Network — a community network of thousands of volunteer ADS-B/Mode-S receivers tracking aircraft worldwide in real time. This is live flight tracking, the FlightRadar-style picture of what is in the sky right now, distinct from static aircraft registries, airline directories, airport metadata and scheduled-flight status. /v1/flights returns every aircraft currently airborne inside a geographic bounding box (give the box as lamin/lomin/lamax/lomax in degrees, kept under roughly 20° latitude by 30° longitude), each with its ICAO 24-bit address, callsign, origin country, live longitude and latitude, barometric and geometric altitude, ground speed, true heading, vertical rate and transponder squawk — a real-time radar snapshot with the network timestamp. /v1/aircraft looks up a single aircraft by its 6-hex ICAO 24-bit address and returns its current live state (or airborne:false when it is grounded or out of receiver range). /v1/arrivals and /v1/departures list the flights that arrived at or departed from an airport (4-letter ICAO code such as EDDF Frankfurt or EGLL Heathrow) over the last N hours (1-48), each with callsign, the estimated airport at the other end and the first/last-seen timestamps. Ideal for live flight-tracking maps, aviation dashboards, geofencing and proximity alerts, spotting tools, and research into air-traffic patterns. Positions are in degrees, altitudes in metres and speeds in metres per second. Data from the OpenSky Network, free for non-commercial use — please credit OpenSky. Coverage depends on volunteer receiver density.

Uptime

100.0%

Latency

299ms

Subs

4,577

Codeforces as an API — the largest competitive-programming platform, running regular rated rounds for hundreds of thousands of programmers worldwide. This API wraps the official Codeforces API into a clean, predictable JSON service. /v1/user looks up one or many competitors' profiles — current and maximum rating with the corresponding rank/title (from newbie through grandmaster to legendary grandmaster), contribution score, country, city, organization, registration date and avatar. /v1/rating returns a competitor's full rating history, contest by contest, with the old and new rating, the rating change and the rank achieved in each round — ideal for plotting a rating curve. /v1/contests lists upcoming and past contests, filterable by phase (BEFORE for the schedule of upcoming rounds, FINISHED for the archive), each with start time, duration and type. /v1/problems searches the entire Codeforces problemset by tag (dp, graphs, greedy, math, implementation, data structures and dozens more) and by difficulty-rating range, returning each problem's contest id, index, name, difficulty rating and tags with a direct link. Ratings range from ~800 to 3500+. Ideal for competitive-programming dashboards, rating trackers, training and problem-recommendation tools, and Discord/Telegram bots for CP communities. Data from the official Codeforces API, free to use. The service is resilient to Codeforces' concurrency rate-limit (automatic retry with backoff).

Uptime

100.0%

Latency

394ms

Subs

4,064