Keyword Research
Free keyword research tool: expand seed terms into hundreds of buyer-intent and question keywords with instant volume estimates, difficulty scores and CSV export. No signup.
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Free robots.txt Generator & AI Crawler Tester (GPTBot, ClaudeBot)
Pick your policy per bot, add disallow paths and a sitemap, then paste any URL to see if it is allowed or blocked — generated and tested entirely in your browser.
Why use this instead of doing it manually
Free robots.txt generator: build a valid robots file with one-tap allow/block rules for AI crawlers like GPTBot, ClaudeBot and Google-Extended, then test any URL against your rules instantly. No signup.
| Capability | The manual way | With ContentSERP |
|---|---|---|
| AI crawlers | Guess which bot strings to add | Curated, current user-agents with allow/block toggles |
| Rule testing | Re-read the file by eye | Longest-match evaluator checks any path per bot |
| Validity | Hope Google parses it | Correct group, wildcard and $ semantics emitted |
| Cost | Bundled in paid SEO suites | Free, runs in your browser |
Frequently asked questions
Should I block AI crawlers?
It depends. Blocking training bots (GPTBot, ClaudeBot, Google-Extended) stops your content being used to train models, but blocking search bots can hide you from AI answers that drive traffic. The tester lets you decide per agent.
Does this check my live robots.txt?
It generates and evaluates the rules you configure here. To audit a file already published on a live URL, use the AI Readiness checker, which fetches and parses a real site.
How does the path tester decide allow vs block?
It follows the robots.txt exclusion standard: the most specific matching path rule wins, Allow breaks ties, and a bot without its own group inherits User-agent: *.
Are Crawl-delay and Sitemap supported?
Yes. Add an optional crawl-delay, one or more Sitemap URLs and an optional Host line. Google ignores Crawl-delay but most other engines honour it.
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