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API Portfolio — 5 Free APIs
5 free dev APIs: WHOIS, Company, Email, Geo, Sanctions
5 production APIs for developers who need data without expensive subscriptions: Domain WHOIS via RDAP, Company Info from Wikipedia + Wikidata, Email Validator with MX + SMTP, IP Geolocation with dual-source fallback, and Sanctions Screener with 20K+ OFAC + UN entities. Built with Cursor AI, no coding skills required. Free tier: 100 requests/month, no credit card. All open source on GitHub.
Hey Product Hunt! 👋
I built this API portfolio using only Cursor IDE — an AI code editor that writes code from plain English. Zero coding experience, but Cursor wrote 100% of the code for all 5 APIs.
Each API wraps free public data sources (RDAP, Wikipedia, DNS, OFAC, UN) into clean, fast JSON. All deployed on Render free tier, listed on RapidAPI for distribution to 4M+ developers.
Free tier: 100 requests/month, no credit card. Would love your feedback — what API should I build next?
Adding a webhook option for the sanctions screener would be really useful so we can get notified automatically when new entities are added, instead of having to poll the endpoint.
the open source angle is a nice move, makes it easy to trust what the endpoints are actually doing. also love that the free tier needs no credit card, removes that whole friction dance.
Tested the WHOIS and IP geolocation endpoints and both returned clean JSON fast, no rate limit headaches on the free tier. Genuinely impressed something this useful ships open source without a credit card wall.
Love how each API has its own dual-source fallback logic, especially the geolocation one. Makes the free tier actually reliable instead of just a teaser.
The dual-source fallback on the IP geolocation endpoint is a smart touch — shows you actually thought about reliability instead of just wiring up a single provider. Curious how the sanctions screener stays current with OFAC updates.
Tested the WHOIS and email validator endpoints on a few domains and both returned fast, clean JSON without me needing to read any docs. Genuinely useful for small side projects.
the sanctions screener is genuinely useful, checked a few names against OFAC and it matched up. nice to see this stuff available without locking everything behind a paid plan.
Love that the WHOIS endpoint uses RDAP instead of scraping, and the sanctions list actually feels current. Hit a few free-tier requests and response times were snappy, going to bookmark this for weekend projects.
Solid free tier for anyone needing quick data lookups without jumping through billing hoops. The sanctions screener stood out, surprisingly useful for basic compliance checks at 100 requests a month.
The dual-source fallback on the IP geolocation API is a really thoughtful touch, especially for anyone who's been burned by flaky single-provider lookups. Love that it's open source too.
About API Portfolio — 5 Free APIs on Product Hunt
“5 free dev APIs: WHOIS, Company, Email, Geo, Sanctions”
API Portfolio — 5 Free APIs was submitted on Product Hunt and earned 19 upvotes and 11 comments, placing #46 on the daily leaderboard. 5 production APIs for developers who need data without expensive subscriptions: Domain WHOIS via RDAP, Company Info from Wikipedia + Wikidata, Email Validator with MX + SMTP, IP Geolocation with dual-source fallback, and Sanctions Screener with 20K+ OFAC + UN entities. Built with Cursor AI, no coding skills required. Free tier: 100 requests/month, no credit card. All open source on GitHub.
API Portfolio — 5 Free APIs was featured in API (98.4k followers), Open Source (68.6k followers), Developer Tools (516.3k followers) and GitHub (41.3k followers) on Product Hunt. Together, these topics include over 127.4k products, making this a competitive space to launch in.
Who hunted API Portfolio — 5 Free APIs?
API Portfolio — 5 Free APIs was hunted by Onizuka. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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