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Skills/kostja94/marketing-skills/robots-txt
robots-txt logo

robots-txt

kostja94/marketing-skills
875 installs615 stars
Run it on Hostinger →up to 70% off + an extra 10% with code ZACAARON10Free API →

Installation

npx skills add https://github.com/kostja94/marketing-skills --skill robots-txt

Summary

When the user wants to configure, audit, or optimize robots.txt. Also use when the user mentions "robots.txt," "crawler rules," "block crawlers," "AI crawlers," "GPTBot," "allow/disallow," "disallow path," "crawl directives," "user-agent," "block Googlebot," "fix robots.txt," "robots.txt blocking," or "search engine crawling." For indexing, use indexing.

SKILL.md

SEO Technical: robots.txt

Guides configuration and auditing of robots.txt for search engine and AI crawler control.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Scope (Technical SEO)

  • Robots.txt: Configure Disallow/Allow, Sitemap, Clean-param; audit for accidental blocks
  • Crawler access: Path-level crawl control; AI crawler allow/block strategy
  • Differentiation: robots.txt = crawl control (who accesses what paths); noindex = index control (what gets indexed). See indexing for page-level exclusions.

Initial Assessment

Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for site URL and indexing goals.

Identify:

  1. Site URL: Base domain (e.g., https://example.com)
  2. Indexing scope: Full site, partial, or specific paths to exclude
  3. AI crawler strategy: Allow search/indexing vs. block training data crawlers

Best Practices

Purpose and Limitations

PointNote
PurposeControls crawler access; does NOT prevent indexing (disallowed URLs may still appear in search without snippet)
AdvisoryRules are advisory; malicious crawlers may ignore
Publicrobots.txt is publicly readable; use noindex or auth for sensitive content. See indexing

Crawl vs Index vs Link Equity (Quick Reference)

ToolControlsPrevents indexing?
robots.txtCrawl (path-level)No—blocked URLs may still appear in SERP
noindex (meta / X-Robots-Tag)Index (page-level)Yes. See indexing
nofollowLink equity onlyNo—does not control indexing

When to Use robots.txt vs noindex

UseToolExample
Path-level (whole directory)robots.txtDisallow: /admin/, Disallow: /api/, Disallow: /staging/
Page-level (specific pages)noindex meta / X-Robots-TagLogin, signup, thank-you, 404, legal. See indexing for full list
CriticalDo NOT block in robots.txtPages that use noindex—crawlers must access the page to read the directive

Paths to block in robots.txt: /admin/, /api/, /staging/, temp files. Paths to use noindex (allow crawl): /login/, /signup/, /thank-you/, etc.—see indexing.

Location and Format

ItemRequirement
PathSite root: https://example.com/robots.txt
EncodingUTF-8 plain text
StandardRFC 9309 (Robots Exclusion Protocol)

Core Directives

DirectivePurposeExample
User-agent:Target crawlerUser-agent: Googlebot, User-agent: *
Disallow:Block path prefixDisallow: /admin/
Allow:Allow path (can override Disallow)Allow: /public/
Sitemap:Declare sitemap absolute URLSitemap: https://example.com/sitemap.xml
Clean-param:Strip query params (Yandex)See below

Path Format Rules (Critical)

Different directives use different path formats — a common source of errors:

DirectiveFormatCorrectWrong
Disallow / AllowRoot-relative path only (starts with /)Disallow: /admin/Disallow: https://example.com/admin/
SitemapAbsolute URL onlySitemap: https://example.com/sitemap.xmlSitemap: /sitemap.xml

Wildcards: matches any character sequence (Disallow: /tmp/). $ marks exact URL ending (Allow: /news/.html$).

Priority: More specific paths take precedence. Allow: /shop/shoes/ overrides Disallow: /shop/. Path matching is case-sensitive: Disallow: /PDF/ does not match /pdf/.

Critical: Do Not Block

Do not blockReason
CSS, JS, imagesGoogle needs them to render pages; blocking breaks indexing
/_next/ (Next.js)Breaks CSS/JS loading; static assets in GSC "Crawled - not indexed" is expected. See indexing
Pages that use noindexCrawlers must access the page to read the noindex directive; blocking in robots.txt prevents that

Only block: paths that don't need crawling: /admin/, /api/, /staging/, temp files.

AI Crawler Strategy

robots.txt is effective for all measured AI crawlers. Set rules per user-agent; check each vendor's docs for current tokens.

User-agentPurposeTypicalNotes
OAI-SearchBotChatGPT searchAllowRespects robots.txt
GPTBotOpenAI trainingDisallowRespects robots.txt; shares crawl data with OAI-SearchBot if both allowed
ChatGPT-UserUser-initiated browsingN/ANo longer respects robots.txt (Dec 2025); use server-side controls instead
Claude-SearchBotClaude searchAllowRespects robots.txt
Claude-UserAnthropic user-initiated browsingAllowRespects robots.txt (unlike ChatGPT-User)
ClaudeBotAnthropic trainingDisallowRespects robots.txt

Deprecated: ~~anthropic-ai~~ — retired by Anthropic, replaced by ClaudeBot / Claude-User / Claude-SearchBot. References to anthropic-ai in robots.txt have no effect.

| PerplexityBot | Perplexity search | Allow | Respects robots.txt | | Google-Extended | Gemini training | Disallow | Respects robots.txt | | CCBot | Common Crawl (LLM training) | Disallow | Respects robots.txt | | Bytespider | ByteDance | Disallow | Respects robots.txt | | Meta-ExternalAgent | Meta | Disallow | Respects robots.txt | | AppleBot | Apple (Siri, Spotlight); renders JS | Allow for indexing | Respects robots.txt |

Allow vs Disallow: Allow search/indexing bots (OAI-SearchBot, Claude-SearchBot, PerplexityBot); Disallow training-only bots (GPTBot, ClaudeBot, CCBot) if you don't want content used for model training.

Important — ChatGPT-User exemption: As of December 2025, ChatGPT-User no longer respects robots.txt directives. OpenAI considers it a proxy for human-initiated browsing. If you need to block it, use server-side controls (WAF rules, IP rate-limiting), not robots.txt. See site-crawlability for AI crawler optimization (SSR, URL management).

Clean-param (Yandex)

Clean-param: utm_source&utm_medium&utm_campaign&utm_term&utm_content&ref&fbclid&gclid

Output Format

  • Current state (if auditing)
  • Recommended robots.txt (full file)
  • Compliance checklist
  • References: Google robots.txt

Related Skills

  • indexing: Full noindex page-type list; when to use noindex vs robots.txt; GSC indexing diagnosis
  • page-metadata: Meta robots (noindex, nofollow) implementation
  • xml-sitemap: Sitemap URL to reference in robots.txt
  • site-crawlability: Broader crawl and structure guidance; AI crawler optimization
  • rendering-strategies: SSR, SSG, CSR; content in initial HTML for crawlers

Score

0–100
63/ 100

Grade

C

Popularity15/30

875 installs — growing adoption.

Completeness27/30

Documented: full SKILL.md body, description, one-line install. Missing: category/license metadata.

Trust15/25

Community skill with a public GitHub source repository you can review.

Freshness6/15

No update timestamp is tracked for this skill in our catalog.

Scored automatically from popularity, completeness, trust, and freshness — computed only from data in our catalog, never fabricated.

Proud of your score? Add this badge to your README.

Paste a snippet into your GitHub README. The badge updates automatically and links back to this page.

Robots Txt skill score badge previewScore badge

Markdown

[![Robots Txt skill](https://www.claudemarket.ai/skills/kostja94/marketing-skills/robots-txt/badges/score.svg)](https://www.claudemarket.ai/skills/kostja94/marketing-skills/robots-txt)

HTML

<a href="https://www.claudemarket.ai/skills/kostja94/marketing-skills/robots-txt"><img src="https://www.claudemarket.ai/skills/kostja94/marketing-skills/robots-txt/badges/score.svg" alt="Robots Txt skill"/></a>

Robots Txt FAQ

How do I install the Robots Txt skill?

Run “npx skills add https://github.com/kostja94/marketing-skills --skill robots-txt” in your terminal. The skill is added to your agent's skills directory and picked up automatically on the next run — no restart or extra configuration needed.

What does the Robots Txt skill do?

When the user wants to configure, audit, or optimize robots.txt. Also use when the user mentions "robots.txt," "crawler rules," "block crawlers," "AI crawlers," "GPTBot," "allow/disallow," "disallow path," "crawl directives," "user-agent," "block Googlebot," "fix robots.txt," "robots.txt blocking," or "search engine crawling." For indexing, use indexing. The full SKILL.md on this page shows the exact instructions the skill gives your agent.

Is the Robots Txt skill free?

Yes. Robots Txt is a free, open-source skill published from kostja94/marketing-skills. As with any third-party skill, review the source repository before installing it into an agent with sensitive access.

Does Robots Txt work with Claude Code and OpenClaw?

Yes. Skills use the portable SKILL.md format, so Robots Txt works with Claude Code, OpenClaw, Codex, Hermes, and any other agent that reads SKILL.md skills.

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