How to Build an AI SEO Agent Using Claude and Semrush

How to Build an AI SEO Agent Using Claude and Semrush

TL;DR Summary:

Narrow the Task: Build the agent around one repeatable SEO job, like turning a seed keyword into a clustered content brief, so it is easier to measure, debug, and control costs.

Use Real Data: Connect the agent to verified sources such as Semrush and Google Search Console, since strong outputs depend on grounding suggestions in actual keyword and site data.

Add Business Context: Feed in company details, competitors, top pages, and other internal files so the agent can produce more useful recommendations, like internal links and launch-aware notes.

Keep Humans in Control: Test every output, require source-backed reasoning, and keep publishing, redirects, and code changes behind human approval to avoid expensive mistakes.

How do you actually build an AI SEO agent instead of just talking about one? A new guide published September 9, 2026 by Chris Hanna walks through the full process, using Claude and the Semrush MCP connection to automate keyword research, clustering, and content brief creation. It matters now because SEO teams are moving away from one-off AI prompts toward repeatable, semi-autonomous workflows that run with less manual work each time.

Why an AI SEO Agent Needs a Narrow Job

The guide recommends starting with one clearly defined, repeatable task rather than a complex multi-part process. Hanna explains that a badly scoped AI SEO agent burns through API units fast, since every test run and trial-and-error fix costs real money. The example agent in the guide has one job: take a seed keyword, check it against Google Search Console data, cluster related keywords using Semrush, and output a content brief as a docx file. This narrow scope gives the agent one clear output each time it runs, which makes it easier to judge if the agent works.

Connecting Your AI SEO Agent to Real Data

An AI SEO agent needs verified data or it will hallucinate numbers and facts. The guide points to Semrush’s MCP, short for model context protocol, as the connection method. This lets an AI tool communicate directly with Semrush’s keyword and backlink databases. Semrush SEO and SEO+AI subscriptions include 50,000 MCP API units per month for this purpose. In Claude, you connect it through the plus icon, then “Connectors,” then “Browse connectors,” searching for Semrush and clicking the plus button to sign in. For teams that want this same Google Search Console connection without assembling the pieces themselves, Nuwtonic SEO is built to pull directly from that data and prioritize which fixes matter most, covering much of the groundwork this section describes.

Turning a Human Process Into Agent Instructions

Before you build anything, the guide says to document how you currently do the task by hand, including data sources, filters, and exceptions. You then paste that document into Claude or ChatGPT and ask the tool to turn it into instructions the AI SEO agent can follow. Hanna notes this takes back-and-forth editing, not a single prompt, before the instructions are ready. Once finalized, you save them as a skill file in Claude by clicking “Customize,” then “Add,” then “Create a skill,” using a name in lowercase letters, numbers, and hyphens only.

Business Context Makes the AI SEO Agent More Useful

Adding a business context file to the skill improves output quality. The guide recommends including what you sell, who you sell to, your competitors, and your top-performing pages. In Hanna’s test, this context let the agent flag upcoming product launches in its “Notes for the writer” section, something the agent could not have known otherwise. He also uploaded a CSV of Google Search Console data and a list of site URLs, which let the agent suggest internal linking ideas inside the content brief.

Testing and Keeping Humans in the Loop

Hanna tested the agent with multiple seed keywords, including “AI tools for freelancers,” and reviewed the reasoning behind each suggestion before trusting the output. He recommends requiring the agent to cite sources for every keyword it suggests, so a human reviewer can check the logic before publishing anything. The guide is clear that high-impact actions, like publishing, redirects, or code changes, should stay behind human approval. AI SEO agents can still make mistakes, and unchecked automation on tasks like these carries real cost.

If you plan to build your own AI SEO agent, start with one task you already do by hand and can measure clearly. Test it against real data before trusting its output, and keep a human checking anything that touches publishing or site changes. Watch your API unit usage closely, since wide access across a team can burn through your monthly allowance fast. If you’d rather start from a platform already built around agentic SEO workflows, Nuwtonic SEO connects directly to Google Search Console to surface prioritized fixes and generate content automatically, similar to the narrow-task agent approach outlined above.


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