The standard technical SEO audit checks crawlability, indexability, website speed, mobile-friendliness, and structured data. That checklist was designed for one consumer: Googlebot.
This is how it’s always been.
In 2026, your website has, at least, a dozen additional non-human consumers. AI crawlers like GPTBot, ClaudeBot, and PerplexityBot train models and power AI search results. User-triggered agents like the newly announced Google-Agent, or its “siblings” Claude-User and ChatGPT-User, browse websites on behalf of specific humans in real time. A Q1 2026 analysis across Cloudflare’s network found that 30.6% of all web traffic now comes from now bots, with AI crawlers and agents making up a growing share. Your technical audit needs to account for all of them.
Here are the five layers to add to your existing technical SEO audit.
Layer 1: AI Crawler Access
Your robots.txt was probably written for Googlebot, Bingbot, and maybe a few scrapers. AI crawlers need their own robots.txt rules, and they need to be separate from Googlebot and Bingbot.
What To Check
Review your robots.txt for rules targeting AI-specific user agents: GPTBot, ClaudeBot, PerplexityBot, Google-Extended, Bytespider, AppleBot-Extended, CCBot, and ChatGPT-User. If none of these appear, you’re running on defaults, and those defaults might not reflect what you actually want. Never accept the defaults unless you know they are exactly what you need.
The key is making a conscious decision per crawler rather than blanket allowing or blocking everything. Not all AI crawlers serve the same purpose. AI crawler traffic can be split into three categories: training crawlers that collect data for model training (89.4% of AI crawler traffic according to Cloudflare data), search crawlers that power AI search results (8%), and user-triggered agents like Google-Agent and ChatGPT-User that browse on behalf of a specific human in real time (2.2%). Each category warrants a different robots.txt decision.

The crawl-to-referral ratios from Cloudflare’s Radar report can make this an informed decision for you. Anthropic’s ClaudeBot crawls 20.6 thousand pages for every single referral it returns. OpenAI’s ratio is 1,300:1. Meta sends no referrals. Blocking OpenAI’s OAI-SearchBot or PerplexityBot reduces your visibility in ChatGPT Search and Perplexity’s AI answers. Blocking training-focused crawlers like CCBot or Meta’s crawler prevents data extraction from a provider that sends zero traffic back. The crawl-to-referral ratios tell you who is taking without giving.
There is one crawler that requires special attention. Google added Google-Agent to its official list of user-triggered fetchers on March 20, 2026. Google-Agent identifies requests from AI systems running on Google infrastructure that browse websites on behalf of users. Unlike traditional crawlers, Google-Agent ignores…
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