Health & Science APIs
Health & Science APIs come largely from free government and academic sources. Medical & Health Data includes openFDA, ClinicalTrials.gov and WHO health statistics, Biology covers genomes, proteins and taxonomy through services like Ensembl and UniProt, and NASA & Space offers NASA's Open APIs plus satellite tracking. A smaller Fitness group lists exercise databases.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
API Ninjas ExercisesSearches 3,000+ exercises by name, muscle group, type, difficulty and equipment, with instructions. Health & Science › Fitness | Freemium | API key | JSON | 100–1k/day | Live |
BootprintReturns a random image and fact about a celestial object like Mars, Jupiter or the Moon. Health & Science › NASA & Space | Free | None | JSON | Unlimited | Live |
CelesTrakSatellite orbital element sets (TLE/OMM) and catalog data for tracking objects in space. Health & Science › NASA & Space | Free | None | JSON | Unlimited | Live |
ClinicalTrials.gov APISearch 500,000+ registered clinical trials by condition, drug, sponsor, location and recruitment status. Health & Science › Medical & Health Data | Free | None | JSON | — | Live |
CMS.gov Provider DataUS Medicare provider directories and quality metrics (hospitals, dialysis, nursing homes) as open datasets. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Untested |
Coronavirus in the UKEngland public health surveillance data (COVID-19 and other diseases) from the UKHSA dashboard. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
Covid Tracking ProjectArchived daily US COVID-19 case, test, and hospitalization data by state, collected through March 2021. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
Covid-19 API (M Media Group)Historical COVID-19 case, death, recovery and vaccination counts by country and continent. Health & Science › Medical & Health Data | None | JSON | — | Deprecated | |
Covid-19 IndiaHistorical India COVID-19 case, testing and vaccination counts by state and district, frozen at Oct 2021. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
COVID-19 Tracker CanadaArchived historical Canadian COVID-19 case, death, vaccination and testing dataset, no longer updated. Health & Science › Medical & Health Data | JSON | — | Deprecated | ||
Cure Cancer With AIOncology data: PubMed papers, cancer news, FDA approvals, clinical trials and drug-interaction predictions. Health & Science › Medical & Health Data | Free | API key | JSON | 1k–10k/day | Live |
DailyMed web servicesOfficial FDA drug label (SPL) documents with NDCs, RxCUIs, drug classes, packaging and label version history. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
disease.shGlobal and country-level COVID-19 and influenza case, death, and vaccination statistics as JSON. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
Ensembl REST APIGenes, transcripts, variants, sequences and cross-species homology for human and other vertebrate genomes. Health & Science › Biology | Free | None | JSON | 10k+/day | Degraded |
ERstatTracks live Canadian ER closures, service disruptions and per-province coverage stats Health & Science › Medical & Health Data | Freemium | API key | JSON | — | Live |
ExerciseDB V1 (free, by AscendAPI)1,500 exercises with animated GIFs, target and secondary muscles, equipment and step-by-step instructions. Health & Science › Fitness | Freemium | None | JSON | — | Live |
HealthCare.gov Content APIMachine-readable glossary and educational content from the US health insurance marketplace. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
iDigBioSearch millions of digitized natural history museum specimen records by taxon, locality and collector. Health & Science › Biology | None | JSON | Unlimited | Live | |
ISRO APIReference data on ISRO's launched spacecraft, launchers, customer satellites and centres. Health & Science › NASA & Space | Free | None | JSON | Unlimited | Live |
ITISUS government taxonomic database of scientific and common names, hierarchy and classification for species. Health & Science › Biology | Free | None | JSON | Unlimited | Live |
Launch Library 2Upcoming and past orbital rocket launches, agencies, pads, and mission data. Health & Science › NASA & Space | Freemium | None | JSON | 100–1k/day | Live |
Longevity World CupBiological-age competition data: athlete biomarkers, rankings and PhenoAge/Bortz aging-clock results. Health & Science › Biology | None | JSON | Unlimited | Live | |
MedlinePlus GeneticsGenetic conditions, genes, chromosomes and mtDNA summaries from the NIH, as JSON or XML. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
MyGene.infoLooks up gene annotations (names, IDs, summaries) across species via simple REST queries. Health & Science › Biology | Free | None | JSON | Unlimited | Live |
NASA Open APIsNASA's own gateway to astronomy picture of the day, Mars rover photos, asteroid and Earth imagery data. Health & Science › NASA & Space | Free | API key | JSON | 10k+/day | Degraded |
NCBI Entrez E-utilitiesSearch and fetch records from PubMed, GenBank, Gene, Protein and other NCBI databases by query or ID. Health & Science › Biology | Free | None | XML | 10k+/day | Live |
NoctuaSkyLooks up stars, planets and deep-sky objects by name; powers the Stellarium Web planetarium. Health & Science › NASA & Space | None | JSON | — | Live | |
NPPES NPI RegistryLook up US healthcare providers by NPI number, name, or location from CMS's official registry. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
Open Data NHS ScotlandHealth and social care statistics and datasets published by Public Health Scotland via a CKAN API. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
Open EphemerisComputes planetary positions, natal charts, transits and astrocartography from NASA JPL's DE440 ephemeris. Health & Science › NASA & Space | Freemium | API key | JSON | — | Live |
openFDASearchable US FDA records on drug labels, recalls, adverse events, and device/food safety. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
OrbitalWikiSatellite orbital data — TLE elements, operator, launch info — merged from CelesTrak, GCAT, and Wikidata. Health & Science › NASA & Space | Freemium | API key | JSON | 1k–10k/day | Live |
PixelaRecords daily habit/effort quantities per user and renders them as GitHub-style contribution graphs. Health & Science › Fitness | Freemium | API key | JSON | — | Live |
Psychologie et SérénitéClinical psychology concepts, blog articles, and a book catalog from a French CBT practitioner. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
RCSB PDB3D structure and sequence metadata for proteins and nucleic acids from the Protein Data Bank archive. Health & Science › Biology | Free | None | JSON | Unlimited | Live |
RxNorm (NLM RxNav)Normalized U.S. drug names and codes: RxCUIs, NDCs, brands, generics and ingredient relationships. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
Satellite Passes APIPredicted next visible passes of a satellite (e.g. the ISS) above your latitude/longitude. Health & Science › NASA & Space | Free | None | JSON | Unlimited | Live |
Solar System OpenDataPhysical and orbital data for planets, moons, dwarf planets and asteroids in the solar system. Health & Science › NASA & Space | Free | API key | JSON | — | Live |
SpaceX API (r/SpaceX)Open-source SpaceX launch, rocket, capsule, and landing pad data; now offline (server unreachable). Health & Science › NASA & Space | None | JSON | Unlimited | Deprecated | |
Stanza DSCSA VerifierValidates FDA DSCSA/EU FMD pharmaceutical 2D barcodes and converts NDC codes to GTIN. Health & Science › Medical & Health Data | Freemium | API key | JSON | <100/day | Live |
TLEUp-to-date NORAD two-line element sets for satellites, queryable by satellite ID. Health & Science › NASA & Space | Free | None | JSON | Unlimited | Live |
UniProt REST APIProtein sequences, functions, names, taxonomy and cross-references for 250M+ UniProtKB entries. Health & Science › Biology | Free | None | JSON | — | Live |
Urgences QuébecQuebec emergency room crowding, stretcher occupancy, and wait times, refreshed every 15 minutes. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
Verified Supplement DataRanks supplements by cost per clinically effective dose, citing PubMed evidence for each pick. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
wgerOpen exercise database, workout routines and nutrition/ingredient data from the wger project. Health & Science › Fitness | None | JSON | Unlimited | Live | |
WHO Global Health Observatory (GHO) OData APICountry-by-year WHO health statistics such as life expectancy, mortality, disease and immunisation rates. Health & Science › Medical & Health Data | Free | None | JSON | — | Live |
WoRMSAuthoritative taxonomic register of marine species names, synonyms, and classification data. Health & Science › Biology | Free | None | JSON | Unlimited | Live |
Your Move - Exercise APIExercise library with 1,400+ HD videos, muscle/equipment data, and AI workout/program generation. Health & Science › Fitness | Free trial | API key | JSON | <100/day | Live |
API Ninjas ExercisesFreemiumLive
Searches 3,000+ exercises by name, muscle group, type, difficulty and equipment, with instructions.
API key · JSON
100–1k/day
no machine-readable spec
BootprintFreeLive
Returns a random image and fact about a celestial object like Mars, Jupiter or the Moon.
None · JSON
Unlimited
llms.txt
CelesTrakFreeLive
Satellite orbital element sets (TLE/OMM) and catalog data for tracking objects in space.
None · JSON
Unlimited
no machine-readable spec
ClinicalTrials.gov APIFreeLive
Search 500,000+ registered clinical trials by condition, drug, sponsor, location and recruitment status.
None · JSON
—
OpenAPI spec
CMS.gov Provider DataFreeUntested
US Medicare provider directories and quality metrics (hospitals, dialysis, nursing homes) as open datasets.
None · JSON
Unlimited
no machine-readable spec
Coronavirus in the UKFreeDeprecated
England public health surveillance data (COVID-19 and other diseases) from the UKHSA dashboard.
None · JSON
Unlimited
no machine-readable spec
Covid Tracking ProjectFreeDeprecated
Archived daily US COVID-19 case, test, and hospitalization data by state, collected through March 2021.
None · JSON
Unlimited
no machine-readable spec
Covid-19 API (M Media Group)Deprecated
Historical COVID-19 case, death, recovery and vaccination counts by country and continent.
None · JSON
—
no machine-readable spec
Covid-19 IndiaFreeDeprecated
Historical India COVID-19 case, testing and vaccination counts by state and district, frozen at Oct 2021.
None · JSON
Unlimited
no machine-readable spec
COVID-19 Tracker CanadaDeprecated
Archived historical Canadian COVID-19 case, death, vaccination and testing dataset, no longer updated.
· JSON
—
no machine-readable spec
Cure Cancer With AIFreeLive
Oncology data: PubMed papers, cancer news, FDA approvals, clinical trials and drug-interaction predictions.
API key · JSON
1k–10k/day
OpenAPI spec
DailyMed web servicesLive
Official FDA drug label (SPL) documents with NDCs, RxCUIs, drug classes, packaging and label version history.
None · JSON
Unlimited
no machine-readable spec
disease.shFreeLive
Global and country-level COVID-19 and influenza case, death, and vaccination statistics as JSON.
None · JSON
Unlimited
OpenAPI spec
Ensembl REST APIFreeDegraded
Genes, transcripts, variants, sequences and cross-species homology for human and other vertebrate genomes.
None · JSON
10k+/day
no machine-readable spec
ERstatFreemiumLive
Tracks live Canadian ER closures, service disruptions and per-province coverage stats
API key · JSON
—
llms.txt
ExerciseDB V1 (free, by AscendAPI)FreemiumLive
1,500 exercises with animated GIFs, target and secondary muscles, equipment and step-by-step instructions.
None · JSON
—
OpenAPI spec
HealthCare.gov Content APIFreeLive
Machine-readable glossary and educational content from the US health insurance marketplace.
None · JSON
Unlimited
OpenAPI spec
iDigBioLive
Search millions of digitized natural history museum specimen records by taxon, locality and collector.
None · JSON
Unlimited
no machine-readable spec
ISRO APIFreeLive
Reference data on ISRO's launched spacecraft, launchers, customer satellites and centres.
None · JSON
Unlimited
no machine-readable spec
ITISFreeLive
US government taxonomic database of scientific and common names, hierarchy and classification for species.
None · JSON
Unlimited
no machine-readable spec
Launch Library 2FreemiumLive
Upcoming and past orbital rocket launches, agencies, pads, and mission data.
None · JSON
100–1k/day
no machine-readable spec
Longevity World CupLive
Biological-age competition data: athlete biomarkers, rankings and PhenoAge/Bortz aging-clock results.
None · JSON
Unlimited
OpenAPI spec · llms.txt
MedlinePlus GeneticsFreeLive
Genetic conditions, genes, chromosomes and mtDNA summaries from the NIH, as JSON or XML.
None · JSON
Unlimited
no machine-readable spec
MyGene.infoFreeLive
Looks up gene annotations (names, IDs, summaries) across species via simple REST queries.
None · JSON
Unlimited
no machine-readable spec
NASA Open APIsFreeDegraded
NASA's own gateway to astronomy picture of the day, Mars rover photos, asteroid and Earth imagery data.
API key · JSON
10k+/day
OpenAPI spec
NCBI Entrez E-utilitiesFreeLive
Search and fetch records from PubMed, GenBank, Gene, Protein and other NCBI databases by query or ID.
None · XML
10k+/day
no machine-readable spec
NoctuaSkyLive
Looks up stars, planets and deep-sky objects by name; powers the Stellarium Web planetarium.
None · JSON
—
OpenAPI spec
NPPES NPI RegistryLive
Look up US healthcare providers by NPI number, name, or location from CMS's official registry.
None · JSON
Unlimited
OpenAPI spec
Open Data NHS ScotlandLive
Health and social care statistics and datasets published by Public Health Scotland via a CKAN API.
None · JSON
Unlimited
no machine-readable spec
Open EphemerisFreemiumLive
Computes planetary positions, natal charts, transits and astrocartography from NASA JPL's DE440 ephemeris.
API key · JSON
—
OpenAPI spec · MCP server · llms.txt
openFDAFreeLive
Searchable US FDA records on drug labels, recalls, adverse events, and device/food safety.
None · JSON
10k+/day
no machine-readable spec
OrbitalWikiFreemiumLive
Satellite orbital data — TLE elements, operator, launch info — merged from CelesTrak, GCAT, and Wikidata.
API key · JSON
1k–10k/day
OpenAPI spec · llms.txt
PixelaFreemiumLive
Records daily habit/effort quantities per user and renders them as GitHub-style contribution graphs.
API key · JSON
—
no machine-readable spec
Psychologie et SérénitéFreeLive
Clinical psychology concepts, blog articles, and a book catalog from a French CBT practitioner.
None · JSON
10k+/day
OpenAPI spec · llms.txt
RCSB PDBFreeLive
3D structure and sequence metadata for proteins and nucleic acids from the Protein Data Bank archive.
None · JSON
Unlimited
no machine-readable spec
RxNorm (NLM RxNav)FreeLive
Normalized U.S. drug names and codes: RxCUIs, NDCs, brands, generics and ingredient relationships.
None · JSON
10k+/day
no machine-readable spec
Satellite Passes APIFreeLive
Predicted next visible passes of a satellite (e.g. the ISS) above your latitude/longitude.
None · JSON
Unlimited
OpenAPI spec
Solar System OpenDataFreeLive
Physical and orbital data for planets, moons, dwarf planets and asteroids in the solar system.
API key · JSON
—
OpenAPI spec
SpaceX API (r/SpaceX)Deprecated
Open-source SpaceX launch, rocket, capsule, and landing pad data; now offline (server unreachable).
None · JSON
Unlimited
no machine-readable spec
Stanza DSCSA VerifierFreemiumLive
Validates FDA DSCSA/EU FMD pharmaceutical 2D barcodes and converts NDC codes to GTIN.
API key · JSON
<100/day
llms.txt
TLEFreeLive
Up-to-date NORAD two-line element sets for satellites, queryable by satellite ID.
None · JSON
Unlimited
no machine-readable spec
UniProt REST APIFreeLive
Protein sequences, functions, names, taxonomy and cross-references for 250M+ UniProtKB entries.
None · JSON
—
no machine-readable spec
Urgences QuébecFreeLive
Quebec emergency room crowding, stretcher occupancy, and wait times, refreshed every 15 minutes.
None · JSON
Unlimited
llms.txt
Verified Supplement DataFreeLive
Ranks supplements by cost per clinically effective dose, citing PubMed evidence for each pick.
None · JSON
Unlimited
OpenAPI spec · MCP server · llms.txt
wgerLive
Open exercise database, workout routines and nutrition/ingredient data from the wger project.
None · JSON
Unlimited
no machine-readable spec
WHO Global Health Observatory (GHO) OData APIFreeLive
Country-by-year WHO health statistics such as life expectancy, mortality, disease and immunisation rates.
None · JSON
—
no machine-readable spec
WoRMSFreeLive
Authoritative taxonomic register of marine species names, synonyms, and classification data.
None · JSON
Unlimited
no machine-readable spec
Your Move - Exercise APIFree trialLive
Exercise library with 1,400+ HD videos, muscle/equipment data, and AI workout/program generation.
API key · JSON
<100/day
OpenAPI spec · llms.txt
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Choosing a Health & Science API
Is there a free Health & Science API?
Yes. NASA Open APIs, openFDA, ClinicalTrials.gov API, Bootprint, CelesTrak and 21 others are free to use, and API Ninjas Exercises, ERstat, ExerciseDB V1 (free, by AscendAPI), Launch Library 2, Open Ephemeris and 3 others have a free tier alongside paid plans.
Which Health & Science APIs work without an API key?
openFDA, ClinicalTrials.gov API, Bootprint, CelesTrak, CMS.gov Provider Data and 27 others need no key or sign-up, so you can try them with a plain request.
Can I call a Health & Science API from front-end JavaScript?
openFDA, ClinicalTrials.gov API, CelesTrak, disease.sh, Ensembl REST API and 17 others allow cross-origin requests and need no key, so they work straight from the browser. For the others, call them from your server so your key stays private.
Can I use Health & Science APIs in a commercial project?
NASA Open APIs, openFDA, API Ninjas Exercises, CelesTrak, Ensembl REST API and 8 others permit commercial use. disease.sh, ERstat, OrbitalWiki, WHO Global Health Observatory (GHO) OData API and Your Move - Exercise API restrict it, for example to non-commercial or attributed use, so read the terms first.
Which Health & Science APIs work with AI agents?
Open Ephemeris and Verified Supplement Data have both an MCP server and an OpenAPI spec. NASA Open APIs, ClinicalTrials.gov API, Cure Cancer With AI, disease.sh, ExerciseDB V1 (free, by AscendAPI) and 9 others publish an OpenAPI spec for generating clients and tools.
Browse by subcategory: Medical & Health Data APIs · Biology APIs · NASA & Space APIs · Fitness APIs
Popular topics: Drug Data APIs · Satellite Tracking APIs