Category
Science & Math APIs
59 APIs, 51 of them with no auth listed. Each one links to its own page with auth, HTTPS, CORS and the official docs.
APIs59
No auth listed86%51 of 59
HTTPS97%
CORS enabled44%
Docs link reachable95%at the last weekly check
Quick starts
No key, HTTPS and CORS, and the docs link answered at the last check: call these from a web page in minutes.
BotleroSourced, quoted specs for humanoid robots
CycleCalcsInterpreted astronomy: sun and moon times, moon phases, planets, eclipses, seasons
DataCiteSearch and retrieve DOI metadata for research datasets and publications
ENANucleotide sequences, genomes and raw reads archive
GBIFGlobal Biodiversity Information Facility
iNaturalistCitizen-science wildlife observations with species identification and mapping
All Science & Math APIs
arcsecond.ioMultiple astronomy data sourcesNo auth
arXivCurated research-sharing platform: physics, mathematics, quantitative finance, and economicsNo auth- BotleroSourced, quoted specs for humanoid robotsNo authCORS
- ChempiricalChemical compounds with physical data, reactions and substructure searchNo authCORS
CodeCogsRender LaTeX equations in PNG, GIF, SVG, EMF, PDF, JSON, or download formats with styling optionsNo auth
COREAccess the world's Open Access research papersapiKey- CycleCalcsInterpreted astronomy: sun and moon times, moon phases, planets, eclipses, seasonsNo authCORS
- DataCiteSearch and retrieve DOI metadata for research datasets and publicationsNo authCORS
- ENANucleotide sequences, genomes and raw reads archiveNo authCORS
- Europe PMCLife-science literature search with abstracts, citations and full-text linksNo authCORS
- GBIFGlobal Biodiversity Information FacilityNo authCORS
iDigBioAccess millions of museum specimens from organizations around the worldNo auth- iNaturalistCitizen-science wildlife observations with species identification and mappingNo authCORS
inspirehep.netHigh Energy Physics info. systemNo auth
isEven (humor)Check if a number is evenNo auth- ISROISRO Space Crafts InformationNo auth
ITISIntegrated Taxonomic Information SystemNo authKEGGGenes, pathways, compounds and reactionsNo auth
Launch Library 2Spaceflight launches and events databaseNo authCORS
MacrostratGeologic maps, rock columns and stratigraphy dataNo authCORS
Materials Platform for Data ScienceCurated experimental data for materials scienceapiKey
MathJSEvaluate math expressions via GET or POST as JSONNo authCORS- Minor Planet CenterAsterank.com InformationNo auth
MyGene.infoGene annotation queries and ID lookupNo authCORS
NASANASA data, including imageryNo auth- NASA ADSNASA Astrophysics Data SystemOAuthCORS
NASA InSightMars weather data from InSight landerapiKeyCORS
NCBI E-utilitiesBiomedical literature, sequences and gene databasesNo authCORS- NewtonSymbolic and Arithmetic Math CalculatorNo auth
- NoctuaREST API used to access NoctuaSky featuresNo authLink down
NumbersNumber of the day, random number, number facts and anything else you want to do with numbersapiKey- OBISGlobal marine species occurrence and distribution dataNo authCORS
- Ocean FactsFacts pertaining to the physical science of OceanographyNo authLink down
Oliver's mTOR AtlasCurated mTOR research: studies by evidence type, pathway claims, open questionsNo authCORS
Open EphemerisSub-arcsecond planetary positions, natal charts, transits, and Human Design from NASA JPL DE440apiKey- Open NotifyISS astronauts, current location, etcNo auth
Open Science FrameworkRepository and archive for study designs, research materials, data, manuscripts, etcNo auth
OpenAlexOpen catalog of scholarly works, authors, institutions, sources, and conceptsNo authCORS
OrbitalWikiCatalog of 16,000+ satellites merging CelesTrak, GCAT, Wikidata; free tier includedapiKeyCORS
Purple AirReal Time Air Quality MonitoringNo auth- RCSB PDB3D structures of proteins and nucleic acidsNo authCORS
Remote CalcDecodes base64 encoding and parses it to return a solution to the calculation in JSONNo authCORS- SatNOGSSatellite observations from open ground stationsNo auth
Semantic ScholarAcademic search engine for papers, authors, and citationsNo auth
SHAREA free, open, dataset about research and scholarly activitiesNo auth
Solar System OpenDataData and facts on solar system bodies and planetsNo authCORS- SpaceXGraphQL, Company, Ships, launchpad and launch dataNo auth
SpaceXCompany, vehicle, launchpad and launch dataNo auth
Sunrise and SunsetSunset and sunrise times for a given latitude and longitudeNo auth
TallytopiaCalculators for finance, health, math, space and sports with step-by-step resultsNo authCORS
Times AdderWith this API you can add each of the times introduced in the array sendedNo auth
TLESatellite informationNo auth
UnpaywallOpen-access status and legal full-text links for scholarly articlesNo authCORSUSGS Earthquake Hazards ProgramEarthquakes data real-timeNo auth
USGS Water ServicesWater quality and level info for rivers and lakesNo auth
VedIntel™ AstroAPIVedic astrology computation — birth charts, dashas, panchang, AI narrativesapiKeyCORS
World BankWorld DataNo auth
WoRMSMarine species taxonomy, synonyms and distributionsNo auth- xMathRandom mathematical expressionsNo authCORSLink down