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.
TestingAPIs
Free fake REST API with products, posts, todos, any HTTP status code and request echo
TETR.IO
TETR.IO Tetra Channel API
Text-till-Kladdesign
AI fashion design generator — transform Swedish text into clothing concepts
THC Open Mindfulness Resources
Free mindfulness resources and research metadata
The Bible
Everything you need from the Bible in one discoverable place
The Calendar
Public holidays for US states and 30 countries plus sports and finance calendars as static JSON
The Coin Analysis
Live and historical cryptocurrency prices, market caps, volatility and drawdown
The Color API
Convert and generate color schemes
The Deploy Log
1,000+ AI deployments, each linked to the publisher's own page, JSON and CSV, CC BY 4.0
The Dog
A public service all about Dogs, free to use when making your fancy new App, Website or Service
The Graph
Indexing protocol for querying networks like Ethereum with GraphQL
The Lord of the Rings
The Lord of the Rings API
The Muse
Job board and company profiles
The Null Pointer
No-bullshit file hosting and URL shortening service
The Old Reader
RSS reader
The Report of the Week
Food & Drink Reviews
The Vampire Diaries
TV Show Data
TheAudioDB
Music
TheCocktailDB
Cocktail Recipes
TheMealDB
Meal Recipes
TheNews
Aggregated headlines, top story and live news JSON API
TheQRCode
Generate QR codes for URLs, WiFi, contact cards, email and text, with custom colors and styling
TheRundown
Real-time sports data: odds, scores, stats & prediction markets, 30+ leagues, 18+ sportsbooks
TheSportsDB
Crowd-Sourced Sports Data and Artwork
They Said So Quotes
Quotes Trusted by many fortune brands around the world
Thirds
Create branded PDFs and images from HTML or reusable templates
Thirukkural
1330 Thirukkural poems and explanation in Tamil and English
This Person Does not Exist
Generates real-life faces of people who do not exist
Thisispaper
Curated architecture, design, photography and art projects with visual-similarity and taste metadata
ThreatCluster
Threat intelligence: incident clusters, validated IOCs, CVEs, ransomware leak-site victims
ThronesApi
Game Of Thrones Characters Data with imagery
Thunder Client
API testing tool
Thunderbit
Extract web pages as Markdown or structured data for AI apps
TickerInside
Holdings of every US ETF, which ETFs hold a stock, and overlap between funds, each dated
TickerLayer
Real-time and historical market data for stocks, forex, crypto and more
TickerMint
Daily market prices and price history for Pokémon, One Piece, Lorcana and Yu-Gi-Oh cards
Tickerz
Daily indexes of real-world activity from public data, each reading timestamped in Bitcoin
TidyTools
Web page to clean Markdown and AI crawler robots.txt checks, free without a key (rate limited)
TikTok
Fetches user info and user's video posts on TikTok platform
Tilth
Free daily UK fertiliser price index across nine grades, CC BY 4.0 licensed
Time Door
A time series analysis API
Times Adder
With this API you can add each of the times introduced in the array sended
Timezone WorldTime
Current time, UTC offset and DST for any time zone or IP, a drop-in WorldTimeAPI replacement
Tinify.dev
Image compression, resize and crop API with usage metadata
Tiny Plates
Structured recipes, semantic search, serving adjustments and shopping lists
TinyMind Agent Tools
Free APIs by an AI agent on a VPS: actor lookup, word-of-the-day, poems, jokes, ping
TinyURL
Shorten long URLs
TIPO
Taiwan patent search system api
Tisane
Text Analytics with focus on detection of abusive content and law enforcement applications
TLE
Satellite information
TMDb
Community-based movie data
Todoist
Todo Lists
Together AI
Fast inference API for open-source LLMs including Llama, Qwen, DeepSeek with a free tier
ToHuman
Rewrite AI-assisted drafts into natural, human-sounding text that reads like you wrote it
TokenRoute
One OpenAI-compatible endpoint for hundreds of LLMs, with a free tier and per-token pricing
Tokopedia
Tokopedia's Official API for integration of various services from Tokopedia
Tollmint
Advertising, subscription, AI-disclosure and accessibility rules across the US, EU and UK
Tomba email finder
Email Finder for B2B sales and email marketing and email verifier
Tomorrow
Weather API Powered by Proprietary Technology
TomTom
Maps, Directions, Places and Traffic APIs
ToolForte
Deterministic utilities: IBAN/VAT validation, cron parsing, regex, diffs, Dutch holidays, test data
Top 5 Stocks
Daily AI-ranked stock and crypto watchlists
TotalShiftLeft Sandbox
Free multi-protocol sandbox: REST, GraphQL & SOAP with OAuth2/JWT auth and OpenAPI 3.0 spec
TourneyRadar
Upcoming chess tournaments from 140+ national federations worldwide
Trace Moe
A useful tool to get the exact scene of an anime from a screenshot
TradeDataHub
U.S. contractor datasets with a free discovery API for coverage, pricing and masked previews
Tradier
US equity/option market data (delayed, intraday, historical)
Traitify
Assess, collect and analyze Personality
Trakt
Movie and TV Data
TransCAPI
Live bus and rail departures, vehicles, disruptions and journey planning for Great Britain
TranscriptYT
YouTube transcripts as JSON, text, SRT or VTT in 150+ languages, with AI fallback
TransitLand
Transit Aggregation
TransparentCars
Fair-price valuation and yearly road tax (IUC) for used cars in Portugal
Transport for Auckland, New Zealand
Auckland Transport
Transport for Belgium
The iRail API is a third-party API for Belgian public transport by train
Transport for Berlin, Germany
Third-party VBB API
Transport for Bordeaux, France
Bordeaux Métropole public transport and more (France)
Transport for Budapest, Hungary
Budapest public transport API
Transport for Czech Republic
Czech transport API
Transport for Finland
Finnish transport API
Transport for Grenoble, France
Grenoble public transport
Transport for Hessen, Germany
RMV API (Public Transport in Hessen)
Transport for Lisbon, Portugal
Data about buses routes, parking and traffic
Transport for Los Angeles, US
Data about positions of Metro vehicles in real time and travel their routes
Transport for Manchester, England
TfGM transport network data
Transport for Norway
Transport APIs and dataset for Norway
Transport for Ottawa, Canada
OC Transpo API
Transport for Spain
Public trains of Spain
Transport for Sweden
Public Transport consumer
Transport for Switzerland
Official Swiss Public Transport Open Data
Transport for Switzerland
Swiss public transport API
Transport for The Netherlands
OVAPI, country-wide public transport
Transport for UK
Transport API and dataset for UK
Transport for United States
NextBus API
Transport for Vancouver, Canada
TransLink
Transport for Washington, US
Washington Metro transport API
transport.rest
Community maintained, developer-friendly public transport API
Trash Nothing
A freecycling community with thousands of free items posted every day