Function calling / tool use

The model invokes tools and APIs instead of only speaking. Agents are this with a loop.

If the tool is “web search,” GEO still matters. If the tool is “your API,” docs matter.

Bad OpenAPI descriptions become bad tool behavior.

Examples

An agent calls your search API, gets unfiltered HTML, and gives up. Return clean JSON.

Agentic workflows are multi-step loops: plan, tool, observe, repeat. Search is one tool among many.

Agents are models wrapped in a loop that can use tools and pursue a goal. Chatbots answer. Agents try to finish work.

Anthropic’s open standard for connecting models to tools and data. Reddex exposes MCP for agents that should query visibility, not scrape HTML.

SEO implication? +

Document tools clearly. Public HTML still needed when the tool is browsing.

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