Polyschau is the fetcher for polyschau.de, a German-language site that compares how different outlets cover the same story and highlights coverage gaps. Its FAQ states that it pulls from roughly 47 German news sources hourly over RSS and generates AI summaries on the same hourly schedule, and the user agent identifies the underlying Python requests library. The site is operated by a sole trader based in Denmark, describes itself as an analysis tool rather than a news medium, and publishes no crawler documentation, no IP ranges and no reverse DNS hostnames.

At a glance

Operator: Polyschau
Type: Aggregator
RSL category: ai-input

How Centinel checks it

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

Polyschau 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, Aggregator.

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