When a company hears that Europe has passed a regulation on artificial intelligence, the next question is natural: and who supervises it here? In Spain the answer has a name and a seat. It is called AESIA, and it is worth knowing what it is, what it can ask of you and with what tools it works —before it matters.

What AESIA is

AESIA is the Spanish Agency for the Supervision of Artificial Intelligence. Its Statute was approved by Royal Decree 729/2023 of 22 August, and it has its institutional seat in A Coruña (Source: BOE, Royal Decree 729/2023, BOE-A-2023-18911, 2023). It is a public-law entity with its own legal personality and administrative powers, attached to the Secretariat of State for Digitalisation and Artificial Intelligence. By creating it before the European Regulation came into force, Spain was a pioneer in Europe in setting up a state agency dedicated to supervising AI (Source: La Moncloa, 2024). It is operational: in December 2025 its Governing Council appointed Alberto Gago Fernández as director general (Source: AESIA, 2025).

That an authority with a name and a seat exists changes the conversation: supervising AI stops being an abstract threat from “Brussels” and becomes something concrete that already has someone to watch it.

What it does, and what it can ask of you

AESIA's competences, under its Statute, span supervision and advice on AI regulation, the promotion of testing environments, a voluntary certification framework, impact and trend assessment, training, and coordination with other authorities (Source: BOE, Royal Decree 729/2023, BOE-A-2023-18911, 2023). Its Statute provides for supervision and, where applicable, sanctions within its competence. The scope must be checked against current national and European law; it cannot be inferred solely from the AI Act application dates.

What it can ask of you, should it come to that, is predictable: that you demonstrate what your system does, which risk category it falls into and with what documentation you sustain it. It does not punish the use of artificial intelligence; it asks you to be able to prove it is governed. What you have to do, in order, to arrive ready for that question we set out in How to comply with the AI Act, step by step.

The sandbox: rehearsing before it is enforceable

AESIA is not only a supervisor; it also offers a lever. Spain established a regulatory sandbox —an official space in which to rehearse compliance with the regulator's support— through Royal Decree 817/2023 of 8 November, the first of its kind in the European Union (Source: BOE, Royal Decree 817/2023, BOE-A-2023-22767, 2023). In its first edition, of 44 applications 12 high-risk systems were selected, with participation reserved in part for SMEs and start-ups (Source: La Moncloa, 2025). For a company, the sandbox is an argument to move sooner rather than later: to validate conformity with official supervision while there is still room.

The guides: documentation that does not start from scratch

The most useful outcome of that testing environment is not a list of those selected, but reusable material. In December 2025 AESIA published a package of fifteen guides supporting compliance with the Regulation for high-risk systems, with checklists on risk management, data governance, transparency and cybersecurity, among others (Source: AESIA, 2025). They are the national practical standard: any company preparing its internal documentation has there an official mould instead of a blank page.

It is not always AESIA: the map by sector

AESIA works alongside other competent authorities. Its Statute expressly preserves competences in health, medicines and labour, among others. For a particular system, verify the sectoral rules and current legal allocation before assigning a supervisor (BOE, Royal Decree 729/2023, Article 4).

What to do with this

AESIA should not be read as a threat, but as a sign that the clock is now running with a concrete timekeeper behind it. The company that reaches a question from the agency with its inventory of systems, its risk classification and its documentation up to date does not have a difficult conversation: it has an answer. That base —the one that lets you at once operate your AI, see it and defend it— is what turns governance into something more than a formality. Having it ready before they call is the only advantage you can really prepare.