Security — entry 027 of 30
Shodan
Shodan continuously scans the public internet and indexes service banners, ports, and metadata for hundreds of millions of connected devices, from routers and webcams to industrial control systems. Its REST API surfaces that index for host search, exposure monitoring, and attack-surface discovery, with free InternetDB lookups for single IPs alongside credit-metered search and export endpoints. Full account features (search filters, scanning, CLI) unlock with a one-time paid membership or a monthly API subscription.
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<a href="https://greatapis.com/api/shodan/"><img src="https://greatapis.com/badge/shodan.svg" alt="Scored 61 on greatapis.com"></a>Auth quickstart
- Get a key at the provider
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
InternetDB API (free, keyless): burst rate limit up to 10,000 requests/second -- per book.shodan.io/developer-apis/internetdb/; GeoNet API (free): rate limit of 1 request/second -- per blog.shodan.io/introducing-the-geonet-api-2/