API Portfolio

5 free APIs for developers. Domain WHOIS, Company Info, Email Validator, IP Geolocation, and Sanctions Screener. Built with Cursor AI, no coding skills required.

Python FastAPI Cursor AI Open Source RapidAPI

Domain WHOIS

Registration data for any domain via RDAP protocol. Returns registrar, dates, status, nameservers.

RapidAPI GitHub

Company Info

Company profiles from Wikipedia + Wikidata. Description, industry, founded, HQ, employees, revenue, ticker.

RapidAPI GitHub

Email Validator

3-stage verification: RFC 5322 syntax, DNS MX lookup, optional SMTP mailbox check.

RapidAPI GitHub

IP Geolocation

Country, city, lat/lon, timezone, ISP, ASN for any IP. Dual-source fallback for reliability.

RapidAPI GitHub

Sanctions Screener

Screen names against OFAC SDN (19,000+ entities) and UN Consolidated (1,000+ entities). Match scoring, AKA alias matching.

RapidAPI GitHub

Pricing

Basic
$0
100 requests/month
Pro
$19
5,000 requests/month
Ultra
$49
25,000 requests/month
Mega
$149
100,000 requests/month

Tech Stack

Cursor IDE FastAPI Python Render RapidAPI RDAP Wikipedia Wikidata OFAC UN
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Built with Cursor IDE. No coding skills required. 100% AI-generated code.

GitHub · dev.to Article