MarvenBot is a crawler operated by QUADRESS GmbH, a Bochum based German B2B marketing data company that also runs the Marven small business software product. Its documented purpose is building a company database for B2B business outreach, collecting publicly available information such as company activity, products, services, industry, locations, employee count, and contact details taken from imprint pages. The operator states it typically fetches three to four pages per company, being the homepage, the imprint and an about page, at a maximum of one request per second per domain, and that it can be blocked with a robots.txt entry for user agent MarvenBot. QUADRESS publishes no IP ranges and no reverse DNS hostnames for verification, and the bot does not appear in public crawler directories.

At a glance

Operator: QUADRESS GmbH
Type: Scraper

How Centinel checks it

User agent: The request calls itself this crawler. Anyone can send the same string.

MarvenBot publishes nothing Centinel can check a source against, so a match reports the name and leaves the source unconfirmed. 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, Scraper.

Back to the crawler catalog