What is Slackbot?
Direct Answer: Slackbot fetches URLs shared in Slack channels to generate link previews and unfurls for team communication.
User-Agent Identification
The following user-agent strings identify Slackbot in your live traffic data:
Slackbot-LinkExpanding 1.0 (+https://api.slack.com/robots)
robots.txt Rules for Slackbot
Respects robots.txt: No
Robots.txt has limited effect on user-initiated bots
Slackbot is triggered by user actions within Salesforce's products. While Salesforce states it respects robots.txt, the bot operates differently from autonomous crawlers — it fetches specific URLs on demand rather than systematically spidering your site. Server-log monitoring is the only reliable way to verify what actually happens.
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Crawl Activity Index
Relative crawl activity for Slackbot over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.
View recent activity data (last 7 days)
| Date | Activity Index |
|---|---|
| Mar 28, 2026 | 32.1 |
| Mar 29, 2026 | 23.7 |
| Mar 30, 2026 | 21.8 |
| Mar 31, 2026 | 56.8 |
| Apr 1, 2026 | 56.0 |
| Apr 2, 2026 | 53.1 |
| Apr 3, 2026 | 40.7 |
Source: Cloudflare Radar
Why track Slackbot traffic?
Identify and classify unknown crawler activity. Slackbot may appear in your live traffic data with varying frequency. Tracking its behavior helps you decide whether to allow, throttle, or block it based on actual data.
Protect your crawl budget. Every bot request consumes server resources. Understanding what Slackbot crawls helps you prioritize the crawlers that matter.
Log Verification
To verify Slackbot traffic in your live traffic data:
- Search access logs for the user-agent strings listed above
- Check if the IP addresses match documented ranges (if provided by Salesforce)
- Verify the crawl pattern matches documented behavior
- Use reverse DNS lookup for additional verification if available
Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.
Official Documentation
View Official Slackbot Documentation →
Information sourced from official documentation. Content generated with AI assistance.