Free HarborByte Tools
Free, fast, trustworthy utilities for web teams. No sign‑up. Built with performance and clarity in mind.
About HarborByte →More tools coming soon: monitoring, bulk checks, badges, and a developer API.
Crawler/Training
Free AI Access Checker
Check if your site allows or blocks GPTBot, ClaudeBot, PerplexityBot, and more. Parses robots.txt and meta/X‑Robots.
Open Free AI Access Checker →
Generator + Validator
Free robots.txt Generator
Create and validate robots.txt to control web and AI crawlers. Copy, download, and learn best practices.
Open Free robots.txt Generator →
Domain Lookup
Free WHOIS / RDAP Lookup
Modern RDAP domain lookup: registrar, expiry, nameservers, DNS and status in seconds.
Open Free WHOIS Lookup →