SummalyBot is the link-preview fetcher used by Misskey and other Fediverse servers (via the summaly library) to render thumbnails and metadata for URLs shared in posts.

At a glance

Operator: SummalyBot
Type: Preview

How Centinel checks it

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

SummalyBot 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, Preview.

Back to the crawler catalog