Centinel AnalyticaSofyaBot
SofyaBot is the web crawler for Sofya, a commercial web search, fetch and extraction API sold to AI agents and developers. Sofya states that it builds its own independent index rather than reselling another engine's results, and SofyaBot performs the crawling behind that index. The documentation says the crawler reads robots.txt, honours Crawl-delay, otherwise makes at most one request per second per site, backs off on 429, 503 and 509 responses, does not execute JavaScript, and skips pages behind a login or paywall. Sofya publishes a single crawler IP address, 159.195.72.86, and documents no reverse DNS hostnames for verification.
At a glance
- Operator: Sofya
- Type: AI Search
- RSL category:
ai-input
How Centinel checks it
- User agent: The request calls itself this crawler. Anyone can send the same string.
- IP ranges: The operator publishes the addresses it crawls from, and Centinel checks the client address against that list.
A request that passes one of these checks is SofyaBot itself. One that only matches the user agent is reported as unverified. The match tokens, verification domains, and address feeds are not published here.
Allowing or blocking it
The crawler object in the /validate response sets access_allowed to true only for a verified source that your tenant allowlists. A policy rule can allow or block this crawler by its category, AI Search.