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.
Roboflow Universe
Pre-trained computer vision models
RoboHash
Generate random robot/alien avatars
Ron Swanson Quotes
Television
RubyGems
Ruby gem metadata, versions, dependencies and search
RunConvert
Convert video, audio, image, and document files programmatically
RuneScape
RuneScape and OSRS RPGs information
Runyankole Bible
Free REST API for the Runyankore-Rukiga Bible — 66 books, 31106 verses
Russian Calendar
Check if a date is a Russian holiday or not
Rwanda Locations
Rwanda Provences, Districts, Cities, Capital City, Sector, cells, villages and streets
RxNorm
Normalized drug names, RxCUIs and NDC codes
Sabre for Developers
Travel Search - Limited usage
SafeReel
NSFW detection for images and full-length videos by URL, free tier
Sahifa
HTML/URL to PDF and screenshots with Arabic and right-to-left support; free tier
Sakura CardCaptor
Sakura CardCaptor Cards Information
Sales Tax Calculator
Computes exact sales tax amounts and breakdowns for checkout and billing
Sampuli
Format-true synthetic test data for 90 countries: IDs, IBANs, cards, addresses
SatNOGS
Satellite observations from open ground stations
SavePage.io
A free, RESTful API used to screenshot any desktop, or mobile website
SayItVid
English video pronunciation search with timestamps, IPA phonetics and subtitle context
ScaleReach
Turn long videos into short vertical clips with AI captions and face-tracking crop
Scanii
Simple REST API that can scan submitted documents/files for the presence of threats
ScanMalware
Scan URLs in a sandboxed browser and search past scans by domain, IP, ASN, JARM or favicon hash
SchemaShield
Read-only preflight for breaking schema changes and downstream query impact
Schiphol Airport
Schiphol
Scoopkit
AI-industry news deduplicated into structured events with a versioned category taxonomy
ScrapeNinja
Scraping API with Chrome fingerprint and residential proxies
ScraperApi
Easily build scalable web scrapers
scraperBox
Undetectable web scraping API
scrapestack
Real-time, Scalable Proxy & Web Scraping REST API
ScrapingAnt
Headless Chrome scraping with a simple API
ScrapingBot
Web scraping, AI extraction, and public TikTok, Instagram, Google and Amazon data as JSON
ScrapingDog
Proxy API for Web scraping
Scrappa
Google Search, Maps, Jobs, YouTube and review site results as structured JSON
Scrax
Web scraping API that only bills for successful scrapes
Screenshot
Take programmatic screenshots of web pages from any website
Screenshot Happy
Website screenshot API (PNG/JPEG/PDF) with full-page capture and visual-diff monitors
Screenshot Studio
Capture web pages as images through a public HTTP API
ScreenshotAPI.net
Create pixel-perfect website screenshots
Screenshotlayer
URL to screenshot
ScriptMasterLabs MCP
Model Context Protocol server with web search, social search & LLM chat paid via x402
Scryfall
Magic: The Gathering database
Sealed Rose
AI media forensics and synthetic content verification for video, audio, image, and text
SearchPinCode
Indian postal PIN code lookup, post office locator and district data
SeatGeek
Search events, venues and performers
SEC EDGAR Data
API to access annual reports of public US companies
SecurityTrails
Domain and IP related information such as current and historical WHOIS and DNS records
SeedFinder
Minecraft Bedrock structures prediction
Segmara
IPO calendars, filing stages and estimated lockup dates
SegmentLite
Lightweight event routing and webhook fan-out API alternative to Segment
Seiche
Free public funding, FX and capital-market evidence with source clocks
Semantic Scholar
Academic search engine for papers, authors, and citations
Semantria
Text Analytics with sentiment analysis, categorization & named entity extraction
Sendgrid
A cloud-based SMTP provider that allows you to send emails without having to maintain email servers
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
SendRaven
Email for AI agents: send email, receive replies as threads, with per-key send limits and approvals
sensor.community
Community air quality sensor network data worldwide
Serialif Color
Color conversion, complementary, grayscale and contrasted text
Serply
Google, Bing, News, Scholar and Maps search results and page scraping as JSON
serpstack
Real-Time & Accurate Google Search Results API
ShapelessAI
Write, schedule and publish social posts, carousels and short video to 8 networks
SHARE
A free, open, dataset about research and scholarly activities
Sheetsu
Easy google sheets integration
Shields
Concise, consistent, and legible badges in SVG and raster format
Shikimori
Anime discovery, tracking, forum, rates
Shodan
Search engine for Internet connected devices
Shopee
Shopee's official API for integration of various services from Shopee
Shortcut
Manage stories, epics, iterations and objectives in a Shortcut workspace
Shotanvil
Screenshot, PDF and HTML rendering API with a free tier, API key or x402 auth
Shotstack
Cloud video editing API to create and render videos programmatically
Shrtcode
URl Shortener with multiple Domains
Shrtlnk
Simple and efficient short link creation
Shumi
Crypto market data: prices, trends, funding rates, sentiment, narratives and market regime
shutterstock
Stock Photos and Videos
Silicon Floor
Who owns AI and chip stocks, what insiders sell, how fast they grow: answers from SEC filings
Simkl
Movie, TV and Anime data
Sirv
Image management solutions like optimization, manipulation, hosting
SiteIntel
Extract metadata, tech stack, emails, and screenshots from any URL
SkyAccess
Search 5,000+ live empty leg flights, get charter price estimates and booking links
SkyBiometry
Face Detection, Face Recognition and Face Grouping
Slack
Team Instant Messaging
SlashYear
Dated historical events as JSON, each quoted from a cited Wikipedia revision
SLF
German city, country, river, database
Smart Image Enhancement
Performs image upscaling by adding detail to images through multiple super-resolution algorithms
SmartAPI
Gain access to set of <SmartAPI> and create end-to-end broking services
Smartcar
Lock and unlock vehicles and get data like odometer reading and location. Works on most new cars
Smartsheet
Allows you to programmatically access and Smartsheet data and account information
Smithsonian Open Access
Smithsonian collection metadata and open-access digital media
SMKlog
Live parcel shipping rates and labels from a plain-words item description
SMTPfast
Send transactional email, manage contacts and broadcasts, free 3,000 emails/month
SnapRender
Website screenshots as PNG, JPEG, WebP or PDF, and page content as markdown, with a free tier
SnoopScan
Scrape, crawl, map and search the web as clean markdown or JSON, with a free monthly tier
Social Casino Index
Daily-checked US social casino toplist: signup bonuses, payout times, minimums, sources
SocialCrawl
Social and commerce data from 50+ platforms in one JSON schema
SocialSwarm
Turn articles into ready-to-post X thread drafts with different hooks
Socrata
Access to Open Data from Governments, Non-profits and NGOs around the world
Solana JSON RPC
Provides various endpoints to interact with the Solana Blockchain
Solar System OpenData
Data and facts on solar system bodies and planets
SoldStack
Sold resale listings from Poshmark with median price, days to sell and net payout after fees
Solematica
Compare Italian solar (photovoltaic) installer offers, energy prices (PUN/ARERA) and satellite roof data
SolidPing
Create and run uptime checks, read results and incidents, manage status pages, with a free tier