Tool Use.
Learn what Tool Use means in modern AI and large language models.
A language model's ability to invoke external functions, APIs, or services during a conversation to take actions or fetch live data.
Tool use is what turns a chatbot into an agent. The model decides when to call a function (search the web, query a database, send an email, run code), passes the right arguments, reads the result, and incorporates it into the next response. Modern frameworks like Anthropic's MCP and OpenAI's function calling standardize how tools are described.
For SEO, tool use is the difference between an AI that "thinks" it audited your site (and hallucinates the answer) and one that actually called a real crawler, parsed real Lighthouse output, and reported real numbers.
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Articles about Tool Use
Read more on the Aergos blog.
Google Must Let Publishers Opt Out of AI Search Under UK Rules
The UK's Competition and Markets Authority has made it official: Google must offer publishers a way to opt out of AI search features like AI Overviews and AI Mode. The toggle will live in Google Search Console and roll out globally after a UK pilot. Here's what it means for your traffic and content strategy.
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Your Client Sent You an AI SEO Audit. Here's How to Respond.
Clients are showing up with AI-generated SEO audits from ChatGPT, Claude, and Perplexity and expecting action. Here's how to evaluate what's real, handle the conversation without being condescending, and use the moment to build trust instead of losing it.
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AI Visibility Tools Compared: What Actually Works in 2026
AI visibility tools are multiplying fast, and the differences between them matter more than the marketing copy suggests. Here's an honest, practitioner-level breakdown of what each platform actually measures, what it misses, and how to choose the right one for your stage and size.
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The 2026 Guide to Ranking in Both SEO and AI Search
Search has split into three disciplines — SEO for rankings, AEO for answer boxes, and GEO for getting cited by AI engines like ChatGPT, Perplexity, and Gemini. This is the 2026 master guide to winning all three without running three separate playbooks. If you bookmark one resource this year, make it this one.
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Should You Trust ChatGPT to Audit Your Website? An Honest Answer
ChatGPT can do a lot of things. Auditing your website's technical health is not really one of them. Here's where it genuinely helps, where it will get you in trouble, and which tools to use instead.
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How LLMs Actually "Read" Your Website (And Why It's Different From Google)
ChatGPT might be serving visitors a six-month-old version of your homepage. Perplexity is live but cuts you off mid-sentence. Google's AI Overviews run on a completely different pipeline than either one. Here's the plain-English breakdown of how LLMs actually process your site — and why it matters for how you write and structure your content.
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