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> /v1/apis · THE FREE API DIRECTORY

Public APIs[1580]

1,580 free public APIs across 52 categories. Filter by auth, CORS, HTTPS support — find what you need to build with.

30 of 1580 APIs
// CALENDAR0931

Non-Working Days

Database of ICS files for non working days

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// EMAIL0932

NoParam

Email validation API for real-time & bulk checking

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// EMAIL0933

Notilify

A seamless messaging platform & API to send all types of SMS

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DOCUMENTS & PRODUCTIVITY0934

Notion

Integrate with Notion

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// ART & DESIGN0935

Noun Project

Icons

AUTH: OAUTHCORS: UNKNOWNOPEN ↗
// CRYPTOCURRENCY0936

NovaDax

NovaDAX API to access all market data, trading management endpoints

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// BLOCKCHAIN0937

Nownodes

Blockchain-as-a-service solution that provides high-quality connection via API

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0938

npm Registry

Query information about your favorite Node.js libraries programmatically

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// HEALTH0939

NPPES

National Plan & Provider Enumeration System, info on healthcare providers registered in US

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// SCIENCE & MATH0940

Numbers

Number of the day, random number, number facts and anything else you want to do with numbers

AUTH: APIKEYHTTPSCORS: NOOPEN ↗
// SCIENCE & MATH0941

Numbers

Facts about numbers

NO AUTHCORS: NOOPEN ↗
// PHONE0942

NumlookupAPI

Worldwide Phone Number Lookup & Verification API

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// HEALTH0943

Nutritionix

Worlds largest verified nutrition database

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// PHOTOGRAPHY0944

ObjectCut

Image Background removal

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// DOCUMENTS & PRODUCTIVITY0945

OCR AI

Document validation API using OCR and AI. Automatically extracts data from documents  and compares it with user-provided data to verify consistency

AUTH: APIKEYHTTPSCORS: NOOPEN ↗
// SPORTS & FITNESS0946

Oddsmagnet

Odds history from multiple UK bookmakers

NO AUTHHTTPSCORS: YESOPEN ↗
// WEATHER0947

ODWeather

Weather and weather webcams

NO AUTHCORS: UNKNOWNOPEN ↗
// ENTERTAINMENT0948

Official Joke

API for random and programming jokes

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// URL SHORTENERS0949

Ogli

Generate short links like any other shortener but with custom OG/meta tags for perfect previews. Ideal for SPAs, apps, and anyone who wants control over what gets shared.

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// WEATHER0950

Oikolab

70+ years of global, hourly historical and forecast weather data from NOAA and ECMWF

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// CRYPTOCURRENCY0951

OKEx

Cryptocurrency exchange based in Seychelles

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// JOBS0952

OkJob

4 day week job board

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0953

Olostep

AI-native web search, scraping, and crawling API that delivers clean, structured, real-time web data. Used by top AI companies

AUTH: APIKEYHTTPSCORS: YESOPEN ↗
// SHOPPING0954

OLX Poland

Integrate with local sites by posting, managing adverts and communicating with OLX users

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// CLOUD STORAGE & FILE SHARING0955

OneDrive

File Sharing and Storage

AUTH: OAUTHHTTPSCORS: UNKNOWNOPEN ↗
// GEOCODING0956

One Map, Singapore

Singapore Land Authority REST API services for Singapore addresses

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// DEVELOPMENT0957

OneSignal

Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App

AUTH: APIKEYHTTPSCORS: UNKNOWNOPEN ↗
// GEOCODING0958

OnWater

Determine if a lat/lon is on water or land

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// OPEN DATA0959

openAFRICA

Large datasets repository of African open data

NO AUTHHTTPSCORS: UNKNOWNOPEN ↗
// MACHINE LEARNING0960

OpenAI

Use AI models such as ChatGPT or DALL-E to experience the capabilities of AI

AUTH: APIKEYHTTPSCORS: YESOPEN ↗