Glossaire · GEO

AI Agent

An AI agent is an autonomous software system, powered by a large language model, capable of planning, reasoning and executing multi-step tasks to reach a goal set by the user, without continuous supervision. Unlike a chatbot that only answers, an AI agent breaks a complex request into subtasks, selects the right tools (web browsing, API calls, file reading), acts, observes the result, then adjusts its strategy in a loop. Assistants such as ChatGPT in agent mode, Claude with computer use, or Perplexity can now browse the web, compare offers and formulate recommendations. For search visibility and brand presence, the AI agent becomes a new intermediary between a company and its customer: it is the one that reads, cites and recommends content. Optimizing for AI agents means making sure your pages remain readable, structured and citable by these autonomous systems.

An AI agent marks the shift from artificial intelligence that answers to artificial intelligence that acts. Where a classic conversational assistant waits for each instruction, the agent receives a goal and orchestrates the necessary steps on its own.

How an AI agent works

An AI agent is built on a large language model (LLM) that serves as its reasoning engine, augmented with a decision loop. The typical cycle follows four phases: perceive the request, plan a sequence of actions, act by calling tools, then observe the result to course-correct. This loop repeats until the goal is reached.

The tools involved vary: web browsing, code execution, database reading, or API calls through standardized protocols such as MCP. It is this ability to manipulate tools that radically distinguishes the agent from a simple text generator.

A concrete example

A user asks an agent: "Find me three SEO agencies in Albi and compare their offers." The agent first formulates search queries, browses the identified sites, extracts pricing information, structures a comparison, then delivers a reasoned summary. At no point did the user drive the intermediate steps.

Why it matters for your visibility

Key takeaway

If your content is not readable and citable by an AI agent, it will recommend a competitor instead. The agent is the new gatekeeper of the purchase decision.

AI agents are redefining the customer journey. They read your pages, judge their relevance and decide whether to include your brand in their answer. Information structuring, clarity of factual passages and the presence of structured data become decisive. This is precisely the goal of GEO: ensuring these autonomous systems understand, retain and cite your company.

FAQ

Questions fréquentes

A chatbot simply answers a question in a conversation. An AI agent goes further: it plans multiple steps, uses external tools and acts autonomously to complete a full task, such as booking a service or comparing suppliers.

AI agents are becoming the new intermediaries between your brand and your customers. They read and cite your content to formulate recommendations. If your pages are not structured and citable, the agent will ignore your brand in favor of a better-optimized competitor.

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