Here is a small list of APIs that will be useful for automating various tasks in OSINT:
| Numverify | https://numverify.com | Global Phone Number Validation & Lookup JSON API. Supports 232 countries. | 250 requests FREE || Twillo | https://www.twilio.com/docs/lookup/api | Provides a way to retrieve additional information about a phone number | Free or $0.01 per request (for caller lookup) |
| Plivo | https://www.plivo.com/lookup/ | Determine carrier, number type, format, and country for any phone number worldwide | from $0.04 per request |
| GetContact |https://github.com/kovinevmv/getcontact | Find info about user by phone number| from $6,89 in months/100 requests|
| Veriphone | https://veriphone.io/ | Phone number validation & carrier lookup | FREE |
| US Street Address | https://smartystreets.com/docs/cloud/us-street-api | Validate and append data for any US postal address | FREE |
| Google Maps Geocoding API | https://developers.google.com/maps/documentation/geocoding/overview | convert addresses (like "1600 Amphitheatre Parkway, Mountain View, CA") into geographic coordinates | 0.005 USD per request |
| Postcoder | https://postcoder.com/address-lookup | Find adress by postcode | £130/5000 requests |
| Zipcodebase | https://zipcodebase.com | Lookup postal codes, calculate distances and much more | 5000 requests FREE | | Openweathermap geocoding API | https://openweathermap.org/api/geocoding-api | get geographical coordinates (lat, lon) by using name of the location (city name or area name) | 60 calls/minute 1,000,000 calls/month FREE |
| DistanceMatrix | https://distancematrix.ai/product | Calculate, evaluate and plan your routes | $1.25-$2 per 1000 elements |
| Approuve.com | https://appruve.co | Allows you to verify the identities of individuals, businesses, and connect to financial account data across Africa | Paid |
| Onfido.com | https://onfido.com | Onfido Document Verification lets your users scan a photo ID from any device, before checking it’s genuine. Combined with Biometric Verification, it’s a seamless way to anchor an account to the real identity of a customer. India| Paid
| Superpass.io | https://surepass.io/passport-id-verification-api/ | Passport, Photo ID and Driver License Verification in India | Paid
| Linkedin company search API |https://docs.microsoft.com/en-us/linkedin/marketing/integrations/community-management/organizations/company-search?context=linkedin%2Fcompliance%2Fcontext&tabs=http | Find companies using keywords, industry, location, and other criteria | FREE |
| API OSINT DS |https://github.com/davidonzo/apiosintDS | Collect info about IPv4/FQDN/URLs and file hashes in md5, sha1 or sha256 | FREE |
| InfoDB API | https://www.ipinfodb.com/api | The API returns the location of an IP address (country, region, city, zipcode, latitude, longitude) and the associated timezone in XML, JSON or plain text format | FREE |
| Domainsdb.info | https://domainsdb.info | Registered Domain Names Search | FREE |
| BGPView | https://bgpview.docs.apiary.io/# | allowing consumers to view all sort of analytics data about the current state and structure of the internet | FREE |
| DNSCheck | https://www.dnscheck.co/api | monitor the status of both individual DNS records and groups of related DNS records | up to 10 DNS records/FREE |
| Cloudflare Trace | https://github.com/fawazahmed0/cloudflare-trace-api | Get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More | FREE |
| Host.io | https://host.io/ | Get info about domain | FREE |
| ZenRows | https://www.zenrows.com/ | Web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies apiKey Yes Unknown | FREE |
| Whois freaks| https://whoisfreaks.com/ | well-parsed and structured domain WHOIS data for all domain names, registrars, countries and TLDs since the birth of internet | $19/5000 requests |
| WhoisXMLApi | https://whois.whoisxmlapi.com | gathers a variety of domain ownership and registration data points from a comprehensive WHOIS database | 500 requests in month/FREE |
| IPtoWhois | https://www.ip2whois.com/developers-api| Get detailed info about a domain | FREE |
| Ipstack | https://ipstack.com | Detect country, region, city and zip code | FREE || Ipgeolocation.io | https://ipgeolocation.io | provides country, city, state, province, local currency, latitude and longitude, company detail, ISP lookup, language, zip code, country calling code, time zone, current time, sunset and sunrise time, moonset and moonrise | 30 000 requests per month/FREE | | IPInfoDB | https://ipinfodb.com/api | Free Geolocation tools and APIs for country, region, city and time zone lookup by IP address | FREE |
| IP API | https://ip-api.com/ | Free domain/IP geolocation info | FREE |
| Mylnikov API | https://www.mylnikov.org | public API implementation of Wi-Fi Geo-Location database | FREE |
| Wigle | https://api.wigle.net/ | get location and other information by SSID | FREE | | PeetingDB | https://www.peeringdb.com/apidocs/ | Database of networks, and the go-to location for interconnection data | FREE |
| PacketTotal | https://packettotal.com/api.html | .pcap files analyze| FREE |
| Binlist.net | https://binlist.net/ | get information about bank by BIN | FREE | v | FDIC Bank Data API | https://banks.data.fdic.gov/docs/ | institutions, locations and history events | FREE |
| Amdoren | https://www.amdoren.com/currency-api/ | Free currency API with over 150 currencies | FREE |
| VATComply.com | https://www.vatcomply.com/documentation | Exchange rates, geolocation and VAT number validation | FREE |
| Alpaca | https://alpaca.markets/docs/api-documentation/api-v2/market-data/alpaca-data-api-v2/ | Realtime and historical market data on all US equities and ETFs | FREE |
|Swiftcodesapi | https://swiftcodesapi.com | Verifying the validity of a bank SWIFT code or IBAN account number | $39 per month/4000 swift lookups |
| EVA | https://eva.pingutil.com/ | Measuring email deliverability & quality | FREE |
| Mailboxlayer | https://mailboxlayer.com/ | Simple REST API measuring email deliverability & quality | 100 requests FREE, 5000 requests in month — $14.49 |
| EmailCrawlr | https://emailcrawlr.com/ | Get key information about company websites. Find all email addresses associated with a domain. Get social accounts associated with an email. Verify email address deliverability. | 200 requests FREE, 5000 requets — $40 |
| Voila Norbert | https://www.voilanorbert.com/api/ | Find anyone’s email address and ensure your emails reach real people | from $49 in month |
| Kickbox | https://open.kickbox.com/ | Email verification API | FREE |
| Psdmp.ws | https://psbdmp.ws/api | search in Pastebin | $9.95 per 10000 requests |
| LeakPeek| https://psbdmp.ws/api | searc in leaks databases | $9.99 per 4 weeks unlimited access |
| BreachDirectory.com| https://breachdirectory.com/api?lang=en | search domain in data breaches databases | FREE |
| LeekLookup| https://leak-lookup.com/api | search domain, email_address, fullname, ip address, phone, password, username in leaks databases | 10 requests FREE |
| BreachDirectory.org| https://rapidapi.com/rohan-patra/api/breachdirectory/pricing | search domain, email_address, fullname, ip address, phone, password, username in leaks databases (possible to view password hashes) | 50 requests in month/FREE |
| Wayback Machine API | https://archive.org/help/wayback_api.php | Retrieve information about Wayback capture data | FREE |
| BotsArchive | https://botsarchive.com/docs.html | JSON formatted details about Telegram Bots available in database | FREE |
| MD5 Decrypt| https://md5decrypt.net/en/Api/ | Search for decrypted hashes in the database | 1.99 EURO/day| | BTC.com | https://btc.com/btc/adapter?type=api-doc | get information about addresses and transanctions | FREE |
| Blockchair | https://blockchair.com | Explore data stored on 17 blockchains (BTC, ETH, Cardano, Ripple etc) | $0.33 - $1 per 1000 calls | | Bitcointabyse | https://www.bitcoinabuse.com/api-docs | Lookup bitcoin addresses that have been linked to criminal activity | FREE | | Bitcoinwhoswho | https://www.bitcoinwhoswho.com/api | Scam reports on the Bitcoin Address | FREE | | Etherscan | https://etherscan.io/apis | Ethereum explorer API | FREE |
| apilayer coinlayer | https://coinlayer.com | Real-time Crypto Currency Exchange Rates | FREE |
| BlockFacts | https://blockfacts.io/ | Real-time crypto data from multiple exchanges via a single unified API, and much more | FREE |
| Brave NewCoin | https://bravenewcoin.com/developers | Real-time and historic crypto data from more than 200+ exchanges | FREE |
| WorldCoinIndex | https://www.worldcoinindex.com/apiservice | Cryptocurrencies Prices | FREE |
| Shodan | https://developer.shodan.io | IP and DNS information about all devices in the internet | from $59/month |
| Fofa.so | https://fofa.so/static_pages/api_help | IP and DNS information about all devices in the internet | ??? | | Censys.io | https://censys.io/api | Search engine for Internet connected host and devices | FREE |
| VirusTotal | https://developers.virustotal.com/reference | files and urls analyze |Public API is FREE |
| AbuseLPDB | https://docs.abuseipdb.com/#introduction | IP/domain/URL reputation | FREE |
| AlienVault Open Threat Exchange (OTX) | https://otx.alienvault.com/api | IP/domain/URL reputation | FREE |
| Phisherman | https://phisherman.gg | IP/domain/URL reputation | FREE |
| URLScan.io | https://urlscan.io/about-api/ | Scan and Analyse URLs | FREE |
| Web of Thrust | https://support.mywot.com/hc/en-us/sections/360004477734-API-| IP/domain/URL reputation | FREE |
| Search4facev | https://search4faces.com/api.html | Search for people in social networks by facial image | $21 per 1000 requests |
| Twitch | https://dev.twitch.tv/docs/v5/reference |
| Reddit | https://www.reddit.com/dev/api/ |
| YouTube Data API | https://developers.google.com/youtube/v3 |
| Vkontakte | https://vk.com/dev/methods |
| Twitter API | https://developer.twitter.com/en |
| Linkedin API | https://docs.microsoft.com/en-us/linkedin/ |
| All Facebook and Instagram API | https://developers.facebook.com/docs/ |
| Whatsapp Business API |https://www.whatsapp.com/business/api |
| Telegram and Telegram Bot API | https://core.telegram.org |
| Weibo API | https://open.weibo.com/wiki/API文档/en |
| XING | https://dev.xing.com/partners/job_integration/api_docs |
| Viber| https://developers.viber.com/docs/api/rest-bot-api/ |
| Dicord|https://discord.com/developers/docs|
| Odnoklassniki| https://ok.ru/apiok|
| Blogger | https://developers.google.com/blogger/ |The Blogger APIs allows client applications to view and update Blogger content | FREE |
| Disqus | https://disqus.com/api/docs/auth/ |Communicate with Disqus data | FREE |
| Foursquare | https://developer.foursquare.com/ | Interact with Foursquare users and places (geolocation-based checkins, photos, tips, events, etc) | FREE |
| HackerNews | https://github.com/HackerNews/API | Social news for CS and entrepreneurship | FREE |
| Kakao | https://developers.kakao.com/ | Kakao Login, Share on KakaoTalk, Social Plugins and more | FREE |
| Line | https://developers.line.biz/ |Line Login, Share on Line, Social Plugins and more | FREE |
| TikTok | https://developers.tiktok.com/doc/login-kit-web | Fetches user info and user's video posts on TikTok platform | FREE |
| Tumblr | https://www.tumblr.com/docs/en/api/v2 | Read and write Tumblr Data | FREE |
|Serpstack | https://serpstack.com/ | Google search results to JSON | FREE |
|Serpapi | https://serpapi.com | Google, Baidu, Yandex, Yahoo, DuckDuckGo, Bint and many others search results | $50/5000 searches/month |
|Bing Web Search API | https://www.microsoft.com/en-us/bing/apis/bing-web-search-api | Search in Bing (+instant answers and location) | 1000 transactions per month FREE |
|WolframAlpha API | https://products.wolframalpha.com/api/pricing/ | Short answers, conversations, calculators and many more | from $25 per 1000 queries |
|DuckDuckgo Instant Answers API | https://duckduckgo.com/api | An API for some of our Instant Answers, not for full search results. | FREE |
|MediaStack | https://mediastack.com/ | News articles search results in JSON | 500 requests/month FREE |
|Darksearch.io | https://darksearch.io/apidoc | search by websites in .onion zone | FREE | | Aviation Stack | https://aviationstack.com | get information about flights, aircrafts and airlines | FREE | | OpenSky Network | https://opensky-network.org/apidoc/index.html |Free real-time ADS-B aviation data | FREE || AviationAPI | https://docs.aviationapi.com/ | FAA Aeronautical Charts and Publications, Airport Information, and Airport Weather | FREE |
|REQBIN Online REST & SOAP API Testing Tool | https://reqbin.com |
|ExtendClass Online REST Client| https://extendsclass.com/rest-client-online.html |
|Codebeatify.org Online API Test | https://codebeautify.org/api-test|
|SyncWith Google Sheet add-on. Link more than 1000 APIs with Spreadsheet | https://workspace.google.com/u/0/marketplace/app/syncwith_crypto_binance_coingecko_airbox/449644239211?hl=ru&pann=sheets_addon_widget|
|Talend API Tester Google Chrome Extension| https://workspace.google.com/u/0/marketplace/app/syncwith_crypto_binance_coingecko_airbox/449644239211?hl=ru&pann=sheets_addon_widget| |
|Reetoo. Rest API Generator | https://retool.com/api-generator/|
|Beeceptor. Rest API mocking and intercepting in seconds (no coding). |https://beeceptor.com |
|Postman. Platform for creating your own API | https://www.postman.com |
|RapidAPI. Market your API for millions of developers |https://rapidapi.com/solution/api-provider/ |
|Apilayer. API Marketplace | https://apilayer.com|
Twitter — https://twitter.com/cyb_detective
Telegram — https://t.me/cybdetective
Linkedin — https://www.linkedin.com/groups/1908171/
Revue — https://www.getrevue.co/profile/cyb_detective
Github — https://github.com/cipher387
Discord — every week I post a fresh invite on Twitter. You can find it by searching for "discord from:cyb_detective"
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent