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.
Halal Terminal
Shariah-compliant stock and ETF screening across 5 methodologies, zakat and purification
Halo
Halo 5 and Halo Wars 2 Information
Hashnode
A blogging platform built for developers
Hasura
GraphQL and REST API Engine with built in Authorization
HaterPicks
Australian sports odds and player props from every major Australian bookmaker, free tier
HaveIBeenPwned
Passwords which have previously been exposed in data breaches
Healthcare.gov
Educational content about the US Health Insurance Marketplace
Hebrew Calendar
Convert between Gregorian and Hebrew, fetch Shabbat and Holiday times, etc
Helious
US Treasury auction results with the tail and bidder split, plus scored economic releases
Helipaddy sites
Helicopter and passenger drone landing site directory, Helipaddy data and much more
Helium
Helium is a global, distributed network of Hotspots that create public, long-range wireless coverage
Helium
News with media bias scoring, balanced news synthesis, live market data, AI options pricing
HelloSalut
Get hello translation following user language
HERE Maps
Create/customize digital maps based on HERE Maps data
HeroHunt People Search
Search 1 billion people profiles across LinkedIn and GitHub for talent sourcing
Heroku
REST API to programmatically create apps, provision add-ons and perform other task on Heroku
Hex
Elixir and Erlang package versions and docs
HG Weather
Provides weather forecast data for cities in Brazil
Hipsum
Hipster-themed lorem ipsum generator for placeholder text
Hirak Exchange Rates
Exchange rates between 162 currency & 300 crypto currency update each 5 min, accurate, no limits
Hirak FaceAPI
Face detection, face recognition with age estimation/gender estimation, accurate, no quota limits
Hirak IP to Country
Ip to location with country code, currency code & currency name, fast response, unlimited requests
Hirak OCR
Image to text -text recognition- from image more than 100 language, accurate, unlimited requests
Hirak Translation
Translate between 21 of most used languages, accurate, unlimited requests
HireLayer
Parse resumes and job descriptions, normalize skills, match and rank candidates
Holidays
Historical data regarding holidays
Homebrew Formulae
Package and cask data for the Homebrew package manager
Hong Kong Obervatory
Provide weather information, earthquake information, and climate data
host-t.com
Basic DNS query via HTTP GET request
Host.io
Domains Data API for Developers
HostDealRadar
Source-backed hosting price and provider record lookup
HostDeFi
Free A+–F token-safety grades across Solana and EVM chains
Hotstoks
Stock market data powered by SQL
HousingFeed
US rental listings from property managers' own websites, verified weekly
Html2PDF
HTML/URL to PDF
HTTP Cat
Cat for every HTTP Status
HTTP Dog
Dogs for every HTTP response status code
HTTP2.Pro
Test endpoints for client and server HTTP/2 protocol support
Httpbin
A Simple HTTP Request & Response Service
Hugging Face
AI model hub with inference API for NLP, computer vision, and audio
Humanitarian Data Exchange
Humanitarian Data Exchange (HDX) is open platform for sharing data across crises and organisations
Humble Bundle
Humble Bundle's current bundles
Humor
Humor, Jokes, and Memes
Hunter
API for domain search, professional email finder, author finder and email verifier
Huobi
Seychelles based cryptocurrency exchange
Hybrid Analysis
File and URL malware analysis powered by Falcon Sandbox
Hyperliquid Market Data
Hyperliquid open interest, funding and cross-venue predicted rates per coin
Hyperserve
Video backend API: upload any format, transcode to MP4, deliver via CDN
Hypixel
Hypixel player stats
Hyrule Compendium
Data on all interactive items from The Legend of Zelda: BOTW
i6eal Open AI Data
Open datasets on AI policy, regulation and public-sector adoption in Germany and the EU
IBAN Analyzer
Resolve an IBAN to its bank name, BIC, city and address for 60+ countries
IBANforge
IBAN validation and BIC/SWIFT lookup for 89 countries with 121k+ BIC entries
IBGE
Aggregate services of IBGE (Brazilian Institute of Geography and Statistics)
IBM Text to Speech
Convert text to speech
icanhazdadjoke
The largest selection of dad jokes on the internet
Icanhazepoch
Get Epoch time
Icanhazip
IP Address API
Icon Horse
Favicons for any website, with fallbacks
Iconfinder
Icons
Iconify
Search and fetch SVG icons from 200+ open source icon sets
Icons8
Icons (find "search icon" hyperlink in page)
icy.tools
GraphQL based NFT API
iDigBio
Access millions of museum specimens from organizations around the world
IFTTT
IFTTT Connect API
IG
Spreadbetting and CFD Market Data
IGDB.com
Video Game Database
iLovePDF
Convert, merge, split, extract text and add page numbers for PDFs. Free for 250 documents/month
Image Upload
Image Optimization
Image-Charts
Generate charts, QR codes and graph images
Imagga
Image Recognition Solutions like Tagging, Visual Search, NSFW moderation
IMDbOT
Unofficial IMDb Movie / Series Information
Imgbb
Simple and quick private image sharing
Imgflip
Gets an array of popular memes
Imgur
Images
ImprovMX
API for free email forwarding service
iNaturalist
Citizen-science wildlife observations with species identification and mapping
inboxsink
Disposable inboxes for end-to-end tests that wait for the email and extract OTP codes
Index Agentica
Agent-first directory of skills, MCP servers, tools, protocols and APIs as JSON, markdown, llms.txt
India GST HSN & SAC
Indian GST HSN and SAC classification code lookup and search
India LGD Index
Free, keyless Indian states, districts, sub-districts and development blocks with LGD codes
India Public Holidays
Official Indian public holidays for the Central government and 36 states/UTs
Indian Mandi Prices
Free, keyless daily wholesale mandi prices for 5 Indian states, sourced from data.gov.in
Indian MSP Benchmarks
Statutory Minimum Support Prices and CACP production cost benchmarks across 28 Indian crops
Indian Mutual Fund
Get complete history of India Mutual Funds Data
Indodax
Trade your Bitcoin and other assets with rupiah
Inferdo
Computer Vision services like Facial detection, Image labeling, NSFW classification
Infermedica
NLP based symptom checker and patient triage API for health diagnosis from text
InfraNode
Unified German city open data: weather, air quality, EV chargers, transit, demographics
INFURA Ethereum
Interaction with the Ethereum mainnet and several testnets
Inshorts News
Provides news from inshorts
inspirehep.net
High Energy Physics info. system
Instagram Login, Share on Instagram, Social Plugins and more
Instatus
Post to and update maintenance and incidents on your status page through an HTTP REST API
Intellibook
Appointment booking and availability API for salons and clinics
Intelligence X
Perform OSINT via Intelligence X
Interpol Red Notices
Access and search Interpol Red Notices
Intrinio
A wide selection of financial data feeds
InvoiceIn
Parse and validate received e-invoices: XRechnung, ZUGFeRD, Peppol, FatturaPA, KSeF