Why this matters
AI answer engines cite pages their crawlers can fetch and index — nothing else.
ChatGPT retrieves via the Bing index; Copilot grounds on Bing; Google AI Overviews, AI Mode and Gemini ground on Google's index; Perplexity runs live Google + Bing search. Every one of them starts from a search index. If your robots.txt blocks the crawler, you have no sitemap, or the site isn't indexed, your presence probability is near zero no matter how strong the content is. These three files and two registrations are the foundation.
01robots.txt
Allow AI and search crawlers in robots.txt.
robots.txt lives at your site root (/robots.txt) and tells each crawler which paths it may fetch. A single Disallow: / that applies to a crawler makes your whole site invisible to the engine it feeds. The safe default is to allow everything and block only what you have a specific reason to.
# Allow every AI + search crawler to reach the whole site.
User-agent: *
Allow: /
# Search + AI-retrieval crawlers (do NOT disallow these)
User-agent: Googlebot # Google Search → AI Overviews / AI Mode / Gemini
User-agent: Bingbot # Bing → ChatGPT retrieval + Copilot grounding
User-agent: GPTBot # OpenAI crawler
User-agent: OAI-SearchBot # ChatGPT search
User-agent: PerplexityBot # Perplexity
User-agent: ClaudeBot # Anthropic (Claude) crawler
User-agent: Google-Extended # Google's AI-training opt-in/out UA (see note)
Allow: /
# Point crawlers at your sitemap
Sitemap: https://example.com/sitemap.xml- Audit
- Open yourdomain.com/robots.txt. Look for any Disallow rule that applies to *, Googlebot, Bingbot, GPTBot, OAI-SearchBot, PerplexityBot or ClaudeBot on the paths you want cited.
- Never blanket-block
- A bare "Disallow: /" under "User-agent: *" blocks every crawler from the entire site. This is the single most common cause of near-zero AI visibility.
- Google-Extended
- Google-Extended is a separate opt-out UA for AI-training data — blocking it does NOT remove you from AI Overviews, AI Mode or Gemini (those use Googlebot). Only block it if you intend to opt out of training.
- Add your sitemap
- Include a "Sitemap:" line so any crawler can discover it without submission.
- Verify
- Use the robots.txt tester in Google Search Console (and Bing) to confirm the target user-agents are allowed on your core paths.
Note: blocking a crawler does not delete you from an engine's existing index — it only prevents future crawls and updates from reaching it.
02XML sitemap
Publish and submit an XML sitemap.
A sitemap lists your canonical, public URLs and their last-modified dates. Without one, crawlers find pages only by following links — so new and recently updated pages take much longer to be discovered, indexed, and eligible for AI answers. Include your landing page and every core page you want cited.
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url>
<loc>https://example.com/</loc>
<lastmod>2026-06-01</lastmod>
</url>
<url>
<loc>https://example.com/pricing</loc>
<lastmod>2026-06-15</lastmod>
</url>
</urlset>- Create
- Generate a sitemap.xml of all canonical, indexable URLs with accurate <lastmod> dates. Most CMSs and frameworks can emit one automatically.
- Include core pages
- Make sure your homepage and the pages you want surfaced (product, pricing, docs, key articles) are listed. The readiness check flags a landing page that is missing from the sitemap.
- Submit
- Submit the sitemap URL in both Google Search Console and Bing Webmaster Tools (see below). Re-submit after major content changes.
- Keep fresh
- Regenerate the sitemap when pages are added, changed, or removed. Stale <lastmod> dates can slow re-crawl of updated pages.
- Reference in robots.txt
- Add the "Sitemap:" line to robots.txt so crawlers can find it even without submission.
03llms.txt
llms.txt — optional, no measured effect.
An llms.txt file at your site root can point AI agents at your key pages in a machine-readable format. It is entirely optional. There is no published evidence that llms.txt changes AI citation rates in any current answer engine. It costs little and does no harm — but it is not a ranking lever, and Lokrix AI never sells it as one. Prioritise the two steps above and the two registrations below.
# llms.txt — optional pointer file for AI agents (no measured ranking effect)
# https://example.com/llms.txt
# Example Co — cloud invoicing for freelancers
> One-line summary an AI agent can quote.
## Core pages
- [Product](https://example.com/product): what it does
- [Pricing](https://example.com/pricing): plans and prices
- [Docs](https://example.com/docs): API and how-to guidesSource: no measured effect of llms.txt on citation rates in published research as of mid-2026. The readiness check reports its presence as informational only — never a failure.
04Google Search Console
Register with Google Search Console.
Google Search Console (GSC) is the authoritative registration point for every Google AI surface — AI Overviews, AI Mode and Gemini all ground on Google's index. Verifying ownership lets you submit sitemaps, monitor crawl health, inspect the last-crawled date, and request indexing.
- 1 · Add property
- Go to search.google.com/search-console and add your site as a Domain property (covers all subdomains + protocols) or a URL-prefix property.
- 2 · Verify
- Verify ownership via a DNS TXT record (Domain property), an HTML file upload, an HTML meta tag, or a linked Google Analytics / Tag Manager account.
- 3 · Submit sitemap
- Open Sitemaps in the left nav and submit https://yourdomain.com/sitemap.xml. GSC reports how many URLs it discovered.
- 4 · Inspect a URL
- Use the URL Inspection tool to see the last crawl date, index status, and any coverage errors (noindex, blocked by robots.txt, 4xx/5xx).
- 5 · Request indexing
- After major content changes, use "Request indexing" in URL Inspection. It is a request, not a guarantee, but is usually processed within days for established sites.
Pages with crawl errors, a noindex tag, or blocked by robots.txt will not be indexed — and therefore will not appear in Google's AI answers.
05Bing / Microsoft Webmaster Tools
Register with Bing Webmaster Tools.
Bing Webmaster Tools is the registration point for ChatGPT (which retrieves via the Bing index) and Microsoft Copilot. Since February 2026 it includes an AI Performance report exposing the grounding queries Copilot runs against your pages — a near-official signal for validating Copilot visibility.
- 1 · Register
- Go to bing.com/webmasters and add your site.
- 2 · Verify / import
- Verify via XML file, meta tag, or DNS — or import your already-verified sites directly from Google Search Console in one click.
- 3 · Submit sitemap
- Submit your sitemap.xml under Sitemaps. Bing crawls sitemaps aggressively for recently changed pages.
- 4 · AI Performance
- Open the AI Performance report to see which queries Copilot is grounding against your pages — a near-official signal for validating Copilot visibility. (Copilot is a grounding signal, not a separately scored Lokrix AI engine.)
- 5 · URL submission
- Use URL Submission to push individual new/updated URLs for faster crawling (subject to a daily quota), and URL Inspection to see the last Bingbot crawl date.
06Before you scan
Readiness checklist.
- robots.txt allows crawlers
- No Disallow: / applies to *, Googlebot, Bingbot, GPTBot, OAI-SearchBot, PerplexityBot or ClaudeBot on core paths.
- Sitemap is live & referenced
- sitemap.xml returns a valid <urlset>, lists your core pages, and is referenced from robots.txt.
- GSC verified + sitemap submitted
- Property verified; sitemap submitted; core pages report as indexed in URL Inspection.
- Bing WMT verified + sitemap submitted
- Property verified (or imported from GSC); sitemap submitted; AI Performance report visible.
- No noindex on core pages
- No meta robots noindex or X-Robots-Tag: noindex on the pages you want cited.
- llms.txt (optional)
- Present if you want it — but never a substitute for the five items above.
Also see How to get found by AI answer engines for recrawl timing, and the AI crawler reference for the full user-agent table.
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