GEO for Agencies: How to Add AI Audits to Your SEO Services

GEO (Generative Engine Optimization) is becoming what SEO was in 2008: a new discipline that your clients are starting to hear about, without knowing exactly what it is — and they're looking for someone to guide them.

For SEO agencies, this is a rare opportunity: establishing a presence in a market before it gets crowded. Agencies that integrate GEO auditing into their services now will gain a 2-3 year head start over competitors who wait for it to go "mainstream."

This guide explains how to build a concrete GEO offering, integrate it into your existing SEO practice, and sell it to both current and prospective clients.

→Understand the differences between SEO and GEO before reading this guide →

Why SEO agencies are best positioned

The GEO audit isn't a radically new discipline — it's a natural extension of SEO. About 70% of GEO criteria are already within the scope of a good SEO agency:

• Technical work (crawlability, speed, SSR) is already in your scope
• Content (structure, E-E-A-T, fresh data) is already in your scope
• Structured data (Schema.org) is already in your scope
• External presence (link building, mentions) is already in your scope

What changes with GEO is the angle: instead of optimizing for Google, you're optimizing for LLMs. The techniques overlap significantly, but the evaluation and reporting are new.

Competitive advantage: Your existing clients already trust you with their online visibility. Offering a GEO audit means extending that trust to a new channel — without starting from scratch on the business relationship.

How to structure the GEO audit

The GEO audit runs in 4 phases. Each phase has a specific deliverable and concrete action items.

Phase 1: Diagnosis (1-2 hours)

Evaluate the site's current state across the 8 GEO criteria:

• AI Crawlability: robots.txt, llms.txt, server-side rendering
• Extractability: heading structure, fact density, lists
• Structured Data: JSON-LD schemas present and valid
• Editorial Neutrality: tone, superlatives, honest acknowledgment of limitations
• Verifiability: cited sources, dates, identified authors
• E-E-A-T: About page, author bios, certifications
• External Presence: backlinks, media mentions, third-party reviews
• Freshness: publication dates, update frequency

Use an automated audit tool (like Detekia) to get a baseline score, then manually deep-dive into the weak spots.

Phase 2: Citability testing (1 hour)

Test directly whether the client is being cited in the major AI platforms:

Tests to run in ChatGPT, Perplexity, Gemini:

1. "[Brand name] reviews" → is it mentioned?
2. "[Service/product] best/recommended" → does it appear?
3. "[Key industry question]" → is their content cited?
4. "[City] + [profession]" (for local businesses) → are they in the results?

Document the results with screenshots. This is often the best sales argument: showing the client they don't appear while their competitors do.

Phase 3: Prioritized action plan (2-3 hours)

Turn the diagnosis into concrete actions, ranked by impact and effort:

• Quick wins (1-2 weeks): robots.txt fixes, adding missing schemas, heading restructuring
• Medium gains (1-3 months): rewriting key content, creating llms.txt, strengthening E-E-A-T
• Long-term gains (3-12 months): external presence strategy, targeted content production, GEO-oriented link building

Phase 4: Monitoring and reporting (monthly)

GEO reporting combines:

• GEO score evolution (baseline → target)
• Monthly citability tests across major AI platforms
• AI traffic tracking (identifiable via UTM or user-agent analysis)
• Comparison with direct competitors

Offers to propose to your clients

Commercial arguments that work

Not all of your clients realize they have a GEO problem. Here are the arguments that start the conversation:

The lost visibility argument

"Nearly 40% of online searches in the US now start with an AI tool rather than Google for your industry. If your site isn't optimized for AI, you're invisible to over a third of your potential prospects."

The competitor argument

Run a live test: type the client's industry into ChatGPT or Perplexity. If a competitor is cited and the client isn't, that's the most powerful sales argument you can make. Nothing beats a concrete demonstration.

The conversion rate argument

"A visitor who lands on your site after an AI recommendation has already decided to check you out — they convert 4x better than a standard SEO visitor. This is pre-qualified traffic."

The window of opportunity argument

"GEO in 2026 is SEO in 2012. Your competitors aren't optimized yet — this is the moment to build a 2-year head start before everyone catches on."

How to train your team

You don't need to master everything before offering GEO audits. Start by training 1-2 people in depth, and build a repeatable process.

Key skills to develop

• LLM comprehension: how ChatGPT, Perplexity, and Gemini work, their sources
• Extractability evaluation: reading content and identifying what's extractable vs. not
• Advanced Schema.org: FAQPage, Article, Organization, Product — implementation and validation
• robots.txt analysis: identifying AI bot blocks
• GEO writing: restructuring content to make it more citable

Resources for training

• Our blog articles — especially the complete GEO guide and the 8-criteria methodology
• The original academic paper: "Generative Engine Optimization" (Aggarwal et al., 2023)
• Google's E-E-A-T guidelines (Search Quality Evaluator Guidelines)
• Official bot documentation: openai.com/gptbot, anthropic.com/robots
• Industry sources: Search Engine Land, Moz Blog, Search Engine Journal

→The complete GEO guide: 8 criteria, 7 concrete actions →

Integrate GEO into your existing workflow

Here's how to integrate GEO without rebuilding everything from scratch:

In your technical SEO audit

Add an "AI Crawlability" section to your technical audit checklist:

• robots.txt check for GPTBot, ClaudeBot, PerplexityBot, Google-Extended
• XML sitemap presence and quality
• Presence of an llms.txt file
• SSR/SSG rendering test vs. client-side JavaScript

In your content audit

For each page analyzed, add a GEO evaluation:

• Extractability score: clear structure, numerical data, lists
• Verifiability score: cited sources, identified author, visible date
• Neutrality score: superlatives, honest comparisons, mentioned limitations

In your content recommendations

When you recommend content creation or rewrites, systematically include:

• GEO-optimal structure (headings, lists, summary boxes)
• Appropriate JSON-LD schemas (Article + FAQPage for guides)
• E-E-A-T signals (author bio, date, sources)

Mistakes to avoid

Overpromising on results: GEO is less deterministic than SEO. You can't guarantee a ranking in an AI response the way you guarantee a Google position. Talk about "increased citability" and "higher probability of being cited," not "guaranteed citations."

Confusing GEO with AI SEO: GEO isn't about ranking positions in AI answers — it's about the probability of being cited at all. It's foundational work, not an immediate optimization lever.

Neglecting substantive content: Technical optimization isn't enough. Content with no informational value won't be cited even with perfect schemas. Editorial quality remains the foundation.

Ignoring the competition: Your client isn't alone. If their competitors have more extractable, better-sourced, and better-structured content, they'll be cited first. The GEO audit should always include a competitive benchmark.

Market outlook for the next 2 years

Current projections suggest that by 2027:

• 40-50% of informational queries will go through AI interfaces (vs. traditional search engines)
• AI engines will integrate ads and sponsored links — creating a "paid GEO" market alongside organic GEO
• GEO audit tools will be as commonplace as Semrush or Screaming Frog
• SEO training programs will systematically include a GEO module

Agencies that build their expertise and processes now will be best positioned to capture this market. The cost of entry today is low — it will rise as competition intensifies.

→Analyze a client site with the free Detekia GEO audit →