Link previewers

Slackbot

Slack's link-expanding fetcher that reads oEmbed/Open Graph/Twitter Card tags (partial Range fetch) when a user posts a link in Slack; caches about 30 minutes.

Dossier

Operator: Slack (Salesforce)
Documentation: api.slack.com
robots.txt token: Slackbot-LinkExpanding
Feeds: link preview
Follows robots.txt: No, per its documentationDocs: Slack does not currently honor robots.txt; it acts on behalf of a human and does not follow links.
How to verify: No published method
Names in our logs: slackbot
Researched: 23 Oct 2026

Observed on New Runtime

Baseline 2026-10-23 · 93-day window · loading live numbers…

Requests: 37
Days active: 2 / 93
First seen: 11 Sept 2026
Last seen: 14 Sept 2026

Dormantother_bot

Daily requests across the observed window, square-root scale.

Identity check claimed vs verified

No per-family identity check is published for this reader; its name is a claim.

What it reads crawler journeys · current window

The crawler-journeys aggregate tracks reading depth for the busiest named crawlers only; this family is not among them.

Sources

api.slack.comapi.slack.com/robots