What to decide first
Start by naming the real user problem, the decision owner, and the final artifact needed after reading this page.
Reference guide
AI crawler user-agent directory
A robots.txt decision starts with user agents, but it should not end there. The same company may operate separate crawlers for model training, AI search, user-triggered fetching, indexing, or infrastructure testing.
| User agent | Common policy question | Typical review note |
|---|---|---|
| GPTBot | Should public content be available for model training? | Often reviewed separately from AI search visibility. |
| OAI-SearchBot | Should pages be discoverable in OpenAI search experiences? | Blocking may reduce the chance of surfacing or citation. |
| ChatGPT-User | Should a user-requested fetch be allowed for public pages? | Usually treated differently from autonomous training crawlers. |
| ClaudeBot | Should Anthropic training or indexing crawlers access public content? | Review licensing, publisher strategy, and source documentation. |
| Claude-SearchBot | Should content appear in Claude-related search or retrieval experiences? | Consider visibility separately from training restrictions. |
| Google-Extended | Should content be used for certain Google AI products? | Do not confuse this with blocking Googlebot for normal Search. |
| CCBot | Should Common Crawl access public content? | Some teams block it because downstream use can be broad. |
| Bytespider | Should the crawler access publisher or product content? | Useful to review if bandwidth, licensing, or content control is a concern. |
How to use this directory
Do not copy a user-agent list blindly. First decide whether the website needs broad visibility, strict content protection, balanced AI search participation, or internal clarity for a regulated workflow. Then test the final robots.txt file against the exact public URLs that matter.
Keep a dated note with each rule. A short note such as "Blocked GPTBot on 2026-07-30 because article archives are licensed separately, allowed OAI-SearchBot for public citation visibility" is more useful than a silent block list. It lets future owners understand the business reason behind the technical file.
Practical value
Practical review notes for AI crawler user-agent directory
The page should help a site owner make a crawler access decision that can be tested on real URLs. This page is written to help visitors understand how the site is maintained, with concrete checks they can apply before relying on the result.
What to keep as evidence
A useful crawler policy includes URL groups, intended bot categories, rule text, test examples, and a change note. Visitors should be able to copy, export, save, or repeat the workflow later instead of treating the page as a one-time explanation.
What not to overclaim
Robots.txt is a public crawl instruction. It is not authentication, paywall enforcement, or a substitute for server-side access control. The page avoids fake certainty, hidden uploads, broken next steps, and generic claims that do not help someone complete a real task.
Recommended next step
After reading this page, open the most relevant tool, run a realistic example, and compare the output with your actual requirement. If the result will be used publicly, save the generated artifact and keep a separate note explaining why you accepted it.
Open the main workflow tool or browse the example library for a complete use case.
Detailed operating notes
How to evaluate AI crawler user-agent directory
This section turns the page into a practical crawler access workflow. It gives the reader a way to prepare inputs, judge the output, and keep a useful record instead of leaving with a shallow summary.
1. Prepare the real requirement
Before using this page, separate public discovery pages, licensed content, private paths, dynamic filters, and files that should never be crawled. The more precise the requirement is, the easier it is to decide whether the generated result is ready to use or needs another pass.
For a real project, write the requirement in one sentence and keep it next to the result. That simple note helps future reviewers understand why a specific setting, wording, rule, file format, or checklist item was chosen.
2. Review the output carefully
The expected outcome is a robots.txt rule set, llms.txt map, crawler test list, or change log entry. A useful result should be specific enough that another person can inspect it, repeat it, or compare it with the original requirement.
After generating an output, test representative URLs after publishing so the rule behavior matches the written crawler policy. If the output is vague, missing a key field, or does not match the destination requirement, revise the inputs and run the workflow again.
3. Avoid the common failure
The most common mistake is using one broad allow or block rule for the whole domain when different URL groups need different crawler treatment. This site is designed to reduce that risk by keeping tool actions visible and by linking guides, scenarios, and examples back to a concrete workflow.
When the page involves public publishing, compliance, or access rules, keep the final result separate from the draft. That makes it easier to rollback, correct, or explain the decision later.
Quality checklist before you leave
- Confirm that the page you used matches the actual situation, not just a similar title.
- Check every generated recommendation, file, rule, or notice against the requirement you wrote down first.
- Save a copy of the final output with the date, source page, and owner of the decision.
- Use the example library when you need to see how the same workflow behaves in a complete real-world case.
- Return to the main workflow when the requirement changes, instead of editing old output by guesswork.