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.
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0x
API for querying token and pool stats across various liquidity pools
1Forge
Forex currency market data
1inch
API for querying decentralize exchange
1pt
A simple URL shortener
221
Senegal reference data: public holidays, mobile operators, banks, communes, legal forms
24 Pull Requests
Project to promote open source collaboration during December
3DTexel
Search free CC0 PBR materials, HDRIs, decals and 3D models for games
49 Gallery Historical Data
Normalized historical records and 25 daily-updated reference series
4chan
Simple image-based bulletin board dedicated to a variety of topics
5DollarFootball
Football fixtures, results, standings and historical odds with corner and card lines
7digital
Api of Music store 7digital
AbuseIPDB
IP/domain/URL reputation
AccuWeather
Weather and forecast data
AcesAPI
ATP and WTA tennis since 2007: match results, draws, rankings, head to head, surface Elo and odds
AcreLens
Land suitability scoring API for any US property: off-grid, rural, recreational, investment
Actinia Grass GIS
Actinia is an open source REST API for geographical data that uses GRASS GIS
administrative-divisons-db
Get all administrative divisions of a country
adresse.data.gouv.fr
Address database of France, geocoding and reverse
Adzuna
Job board aggregator
Aemet
Weather and forecast data from Spain
Aether Bridge
Autonomous agent team management and API workflow orchestration
Aether-X Port Congestion Oracle
Predictive port congestion, ETA delay and freight volatility signals for 16 global ports
Aftership
API to update, manage and track shipment efficiently
Agent Nexus
Find agent-callable APIs, MCP servers and CLIs by capability, with live health and uptime data
Agent Nexus
Continuously probed registry of APIs, MCP servers and CLIs callable by agents
Agent Verifier
Self-check for AI agents: verifies Web Bot Auth signatures and shows how a request looks
AgentPay Doc Tools
PDF to text, RSS/Atom/JSON feeds to JSON and sitemaps to URL lists, paid per call via x402
AgentPay Domain Lookup
DNS records, WHOIS/RDAP, IP ownership and domain reports for AI agents, paid per call via x402
Agify.io
Estimates the age from a first name
AI Dev Jobs
AI/ML engineering job aggregator with REST, RSS, and MCP endpoints
AI Economics Tools
Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek
AI For Thai
Free Various Thai AI API
AI Law Tracker
AI regulation laws by jurisdiction (US, EU, global) as read-only JSON; free tier
AI Mastering
Automated Music Mastering
AirNow
US EPA air quality data and forecasts
AirportMiles
Airport codes, distances, routes and passenger numbers as static JSON files
airportsapi
Get name and website-URL for airports by ICAO code
Airtable
Integrate with Airtable
Airtel IP
IP Geolocation API. Collecting data from multiple sources
Alchemy Ethereum
Ethereum Node-as-a-Service Provider
Aletheia
Insider trading data, earnings call analysis, financial statements, and more
AlienVault Open Threat Exchange (OTX)
IP/domain/URL reputation
Allowly Hiring Evidence
Deterministic hiring policy decisions and signed evidence records
Allscreenshots
Website screenshots and PDFs with full-page capture, dark mode and ad blocking
Alpaca
Realtime and historical market data on all US equities and ETFs
Alpha (Mossland)
Korean crypto channel stance + RAG Q&A + canonical entity/topic/event store
Alpha Vantage
Realtime and historical stock data
Amadeus for Developers
Travel Search - Limited usage
Amanah Sunnah
Semantic search across Quran, Hadith, Tafsir & 18K+ Rijal narrators
Amazonscraperapi
Amazon product, search & batch scraping API with residential proxies (1000 free)
AmberOne
Turn any website into a build-ready Android, iOS, PWA or Electron app project
Amdoren
Free currency API with over 150 currencies
AmiiboAPI
Nintendo Amiibo Information
An API of Ice And Fire
Game Of Thrones API
AniAPI
Anime discovery, streaming & syncing with trackers
AniDB
Anime Database
AniList
Anime discovery & tracking
AnimeChan
Anime quotes (over 10k+)
AnimeFacts
Anime Facts (over 100+)
AnimeNewsNetwork
Anime industry news
AnswerLine
Answers, citations and sources from AI assistants and Google surfaces through one API
AnswerLine
ChatGPT, Gemini, Copilot, AI Mode and Google Search/News results as structured JSON
Anycrap
35,000+ absurdist AI-generated product concepts with names, descriptions, and images
Apache Superset
API to manage your BI dashboards and data sources on Superset
API Direct
Real-time social media data from X, LinkedIn, Reddit, YouTube, Instagram, TikTok, Facebook and news
API Grátis
Multiples services and public APIs
API Setu
An Indian Government platform that provides a lot of APIS for KYC, business, education & employment
API Tool Calls
API Tool Calls: Home cost planners, page to Markdown, SEO checks and recalls
API-FOOTBALL
Get information about Football Leagues & Cups
Api2Convert
Online File Conversion API
ApicAgent
Extract device details from user-agent string
ApiFlash
Chrome based screenshot API for developers
Apiip
Get location information by IP address
apilayer aviationstack
Real-time Flight Status & Global Aviation Data API
apilayer languagelayer
Language Detection JSON API supporting 173 languages
apilayer pdflayer
HTML/URL to PDF
APIllow
Zillow property data: 50+ fields per listing by address, URL, ZPID or ZIP, with sold data and comps
Apimetro
Geospatial data for Mexico City public transport system (Metro, Metrobús, Cablebús, RTP, etc.)
apipj
Brazilian company data by CNPJ from Receita Federal open data, incl. alphanumeric CNPJ; free tier
APIs.guru
Wikipedia for Web APIs, OpenAPI/Swagger specs for public APIs
APITemplate.io
Dynamically generate images and PDFs from templates with a simple API
APIXU
Weather
APIzone
Independent uptime & status monitoring for 200+ popular APIs
ApogeoAPI
Bundled API for countries, states, cities, IP geolocation, and live exchange rates
Application Environment Verification
Android library and API to verify the safety of user devices, detect rooted devices and other risks
AQICN
Air Quality Index Data for over 1000 cities
Aquanode
Live GPU rental prices and availability across nine cloud providers
Arbeitnow
API for Job board aggregator in Europe / Remote
Arbeitsamt
API for the "Arbeitsamt", which is a german Job board aggregator
ARC
Open data on whether AI shopping agents can reach checkout at specific online stores
Archive.org
The Internet Archive
Arcmira
Search indexed YouTube transcripts for timestamped passages and mentions
ArcNautical
Screen any ship by IMO for OFAC/EU/UN/UK sanctions, ownership opacity and a vetting grade
arcsecond.io
Multiple astronomy data sources
Arkleon
Point-in-time SEC EDGAR fundamentals over /v1
Artificial Intelligence Jobs
Live AI/ML job listings from 260+ companies' own career pages, with salary, location, remote and seniority filters
arXiv
Curated research-sharing platform: physics, mathematics, quantitative finance, and economics
Asana
Programmatic access to all data in your asana system
Assinafy
Brazilian e-signature API with a free plan