Ansafi API

Technology data from an open monthly crawl. Every response tells you where it came from.

We observe 4,015 technologies across 716,977 profiled domains, monthly. Lead lists and switch feeds are available for the technologies we have validated; the rest are visible and searchable.

The unusual part. The crawl underneath is public infrastructure, run by the Internet Archive since 2011. Because we hold every month of it, we can tell you not just what a company runs but when they changed it — which is the part that is actually actionable.

Two products

Lead lists are companies currently running a technology. Switch feeds are companies that adopted or dropped one. Feeds require history and careful filtering — a site that merely failed to load looks identical to a departure — so a technology may be available as a list before it is available as a feed.

Base URL

https://www.ansafi.com/api/v1

First call

curl https://www.ansafi.com/api/v1/technologies?list_audit_status=audited \
  -H "Authorization: Bearer sk_live_..."

Quickstart →