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What an AI agent actually is (and what is hype)

If it cannot fail observably, it is not an agent: it is a demo.

Published
29 June 2026draft
Category
AI in production
Reading
7 min

This piece is published as an outline: the statement and the structure are settled, the full text is coming.

The minimum definition

An agent decides which tool to call and with what arguments, and lives with the consequences. Everything else is a prompt with good PR.

The failure test

The question that separates product from demo: when it gets something wrong, do you find out? If the only symptom is an unhappy customer, there is no agent.

Typed tools, not instructions

Why a validated schema beats three paragraphs asking the model to behave.

Marked in red ink

The claims going around about agents, and what survives contact with a real system.

Write to me

If you are thinking about building something with AI and want to talk it through with someone who has put it into production, write to me. I answer myself.

hola@giron.ai