Free Public APIs for Developers and Agents
Free public web APIs that developers and AI agents can call. Entries come from the open public-apis list; each link was checked automatically (HTTP status) on the date shown, which says the site responded, not that the API is good.
Vuntum
Sourced, dated data on consumer robots and physical AI: specs, prices, evidence
Vuntum
Sourced, dated facts on consumer robots and physical AI, licensed CC BY 4.0
W3C Validator
Validate HTML and check markup errors
Waifu.im
Get waifu pictures from an archive of over 4000 images and multiple tags
Waifu.pics
Image sharing platform for anime images
WakaTime
Automated time tracking leaderboards for programmers
Waldrand Avatar
Deterministic SVG/PNG/WebP avatars from any string, four styles
Wallhaven
Wallpapers
WallstreetBets
WallstreetBets Stock Comments Sentiment Analysis
Wargaming.net
Wargaming.net info and stats
Warrant
APIs for authorization and access control
Watchdata
Provide simple and reliable API access to Ethereum blockchain
Watchmode
API for finding out the streaming availability of movies & shows
WattFigure
US electricity rates by state, with appliance and EV charging running costs
weather-api
A RESTful free API to check the weather
WeatherAPI
Weather API with other stuff like Astronomy and Geolocation API
Weatherbit
Weather
Weatherstack
Real-Time & Historical World Weather Data API
WeatherTotals
Measured US snow, rain, hail and aurora totals by state and city
Web Metadata & Contact Extractor
Extract SEO metadata, contact emails, social links, and tech stack (<200ms)
Web of Trust
IP/domain/URL reputation
Web Series Quotes Generator
API generates various Web Series Quote Images
Web3 Storage
File Sharing and Storage for Free with 1TB Space
Webclaw
Web content extraction for LLMs with scrape, crawl, search, and summarize
Webdam
Images
WebScraping.AI
Web Scraping API with built-in proxies and JS rendering
Website Carbon
API to estimate the carbon footprint of loading web pages
WeCanTrack
Automatically place subids in affiliate links to attribute affiliate conversions to click data
Wger
Workout manager data as exercises, muscles or equipment
What3Words
Three words as rememberable and unique coordinates worldwide
WhatJobs
Job search engine
WhatPulse
Small application that measures your keyboard/mouse usage
Wheelwise
UK used-car listings with fair-price grade, 36-month resale forecast and monthly cost per advert
When is next MCU film
Upcoming MCU film information
WhensTheRace
F1 season schedule with UTC session start times as JSON, RSS and iCal
WhereParcel
Unified parcel tracking API across 60+ carriers worldwide (USPS, FedEx, UPS, DHL, etc.)
WhichTrim
US vehicle recalls, complaints, fuel economy, crash ratings, service bulletins and VIN decoding
WhiskyHunter
Past online whisky auctions statistical data
WhiteBIT
European cryptocurrency exchange
Wikidata
Collaboratively edited knowledge base operated by the Wikimedia Foundation
Wikipedia
Mediawiki Encyclopedia
Wiktionary
Collaborative dictionary data
Windsock
Aircraft valuations, FAA registry lookups, cost of ownership and aviation market data
Wizard World
Get information from the Harry Potter universe
WolframAlpha
Provides specific answers to questions using data and algorithms
Wolne Lektury
API for obtaining information about e-books available on the WolneLektury.pl website
WooCommerce
WooCommerce REST APIS to create, read, update, and delete data on wordpress website in JSON format
Word Cloud
Easily create word clouds
Wordnik
Dictionary Data
Words
Definitions and synonyms for more than 150,000 words
WordSoHard
Word definitions with Scrabble validity and tile score in one call, built for word games
Worklittle
Job search, over 4 million jobs
World Bank
World Data
World Time & Weather
Current weather, local time, UTC offset and DST rules for 400 cities as static JSON
WorldCoinIndex
Cryptocurrencies Prices
WoRMS
Marine species taxonomy, synonyms and distributions
Worth the Rip
Sealed trading-card product prices and expected value across 10 TCGs, refreshed every 2 hours
wttr.in
Weather in your terminal, supports JSON output
xeno-canto
Bird recordings
Xeramail Temp Mail
Temp email address REST API for privacy, testing, automation with OTP extraction
xfetch
Read API for X/Twitter search, profiles, tweets, and social graph
XFINLAB
Market events, sentiment, technical analysis and macro data for stocks
XFlux
Read X/Twitter profiles, search, timelines; account monitors with signed webhooks
xkcd
Retrieve xkcd comics as JSON
XLSX Inspector
Inspect XLSX/XLSM structure: sheets, formulas, macros and external links
XOOMAR
US market data from SEC, FINRA, CFTC and the Fed: filings, insiders, earnings dates, short interest
Yandex.Maps Geocoder
Use geocoding to get an object's coordinates from its address
Yandex.Weather
Assesses weather condition in specific locations
Yes No
Generate yes or no randomly
Yes or No Oracle
Random yes/no/maybe answers in 7 themed oracle voices (Magic 8 Ball, Tarot, and more)
YNAB
Budgeting & Planning
Yo Momma Jokes
REST API for Yo Momma Jokes
YouTube
Add YouTube functionality to your sites and apps
Yu-Gi-Oh!
Yu-Gi-Oh! TCG Information
Zelothorn
Plain-English explanations of US public companies with SEC filings and earnings data
Zen Quotes
Large collection of Zen quotes for inspiration
ZenRows
Web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies
Zestful
Parse recipe ingredients
ZipCodeAPI
US zip code distance, radius and location API
ZipRecruiter
Job search app and website
Ziptastic
Get the country, state, and city of any US zip-code
ZMOK
Ethereum JSON RPC API and Web3 provider
Zoho Books
Online accounting software, built for your business
Zornade
Cadastral parcels, geocoding, OMI valuations, risk and demographics for Italy (85M parcels)
Zube
Full stack project management