piperic/piperic-ai-crawlers

Piperic AI Crawler Registry

The most complete public registry of AI crawlers and AI-adjacent bots: 969 user agents with operator, purpose, robots.txt compliance and verification hints — maintained and continuously updated by Piperic.

• File: ai-crawlers.csv
• Columns: slug, name, operator, kind, category, purpose, respect, major, ua_patterns, verify, docs_url, sources, description (ua_patterns and sources are |-separated)
• Updated: weekly on the live site, monthly snapshots here (this snapshot: October 2026)
• License: CC BY 4.0 — free for any use with attribution to Piperic

What's inside

Every known AI-related crawler — training bots (GPTBot, ClaudeBot…), answer/ search bots (OAI-SearchBot, PerplexityBot…), assistants and agents — plus the wider ecosystem of AI-adjacent crawlers, merged from public robots lists, CDN bot directories and Piperic's own live-traffic observatory, with source attribution per row.

Useful for:

• building or auditing a robots.txt AI policy (allow answers, block training — the purpose column is the key)
• log analysis: match ua_patterns against your access logs, use verify for reverse-DNS confirmation of the big operators
• research on AI crawling behaviour and its evolution

Live, always-current version with per-bot pages, live traffic observations and a robots.txt policy generator: https://piperic.com/tools/ai-bots

Companion data

Piperic also measures how the web responds to these crawlers — which sites block which bots, by country and platform, across 50M+ sites: https://piperic.com/ai-report

Citation

Piperic AI Crawler Registry (October 2026 edition), Piperic Business Intelligence, https://piperic.com/tools/ai-bots — CC BY 4.0.

Questions: hello@piperic.com