In force as of 9 September 2026.
This document also exists in French. In the event of any discrepancy between the two versions, the French version prevails.
These terms govern the sale of Muzau subscriptions and credits. They supplement the terms of use, which govern how the service may be used, and the data processing annex. Where they conflict on a question of sale, these terms prevail.
Subscribing or buying credits means accepting these terms in the version in force on that day.
The service is reserved for businesses acting for the purposes of their activity. It is not aimed at consumers, and subscribing implies that you are acting in a professional capacity.
The service is published and sold by Arthur Osstyn EI, a sole trader (entrepreneur individuel) trading under the name O2S.
SIREN 900 494 048, SIRET 900 494 048 00011. Registered address: Station F, 5 parvis Alan Turing, 75013 Paris, France. Contact: contact@muzau.fr.
VAT is not applicable under article 293 B of the French tax code. The prices shown are therefore the prices paid: there is no VAT to add.
Muzau is an online service that lets you create autonomous software agents and put them to work for your business. It is delivered remotely, with no installation and no physical medium.
The offer includes a free plan and paid plans, described on the pricing page and in your workspace. A plan opens a level of service and an allowance of credits each month. On paid plans taken out self-service, you may also buy credits in packs, on their own. The free plan does not allow this: it is there to let you try the service, and it cannot be topped up.
The Enterprise plan is not available self-service: it is quoted individually, and that quote prevails over these terms for whatever it expressly states.
A credit is the unit that measures what your agents consume. Each time an agent reasons, your balance falls by the actual cost of that reasoning, converted into credits. There is no flat fee per action: what is charged is what was consumed, no more and no less.
That method has two consequences we would rather write down. First, your consumption varies from month to month with the work you ask for. Second, a credit does not buy a fixed amount of work: what it gets you depends on the model used. We choose the models that run your agents, and we may change them at any time, without notice. The same action may therefore consume more or fewer credits than before. A detailed view of your consumption is available at any time in your workspace.
The credits included in your plan are reset at each monthly renewal: they do not carry over from one month to the next. Credits you have bought in a pack are yours: they are preserved from one period to the next and are not cleared at renewal.
When your balance runs out, your agents stop working until the next renewal or until you buy credits. A reasoning step already under way is never cut off, which may take your balance slightly below zero. That overshoot remains payable: it is charged against your balance and deducted from the credits you add next.
The prices that apply are those displayed at the time you subscribe or buy. They are stated in euros.
We may change our prices. An increase never applies to a month already paid for, and we tell you at least thirty days before it takes effect on your subscription. If it does not suit you, you cancel: because your subscription is monthly, no increase can be imposed on you for a period you did not choose.
Credits already bought are never revalued or devalued by a price change.
You subscribe online, from your workspace. Payment is handled by Stripe, our payment provider: we neither receive nor store your card details.
The subscription is monthly. The first payment is taken when you subscribe, then on each monthly anniversary date. Credit purchases are paid for when ordered.
An invoice is issued for every payment and remains available in your workspace.
If a payment fails, we let you know and you have seven days to put it right. After that the subscription is suspended, then terminated if the situation is not resolved. Your data is kept for the period set out under "What happens at the end".
The subscription runs for one month and renews automatically each month.
You may cancel it at any time, from your workspace, with no notice, no fee and no need to give a reason.
Cancellation takes effect at the end of the current month: the month already started remains payable and your service stays open until it ends. There is no further renewal after that.
No refunds are given, neither pro rata for the month in progress, nor for unused credits, nor for credits bought in a pack. The only exception is the right of withdrawal described in the next section, where it applies.
We may terminate your subscription on thirty days' notice, or without notice in the event of a serious breach of these terms or of the terms of use. In that case, unless the breach is yours, we refund the paid and unused part of the month.
Since the service is reserved for businesses and subscription takes place online, the contract is a distance contract between two businesses: the right of withdrawal under French consumer law does not apply to it.
One narrow case is an exception: a contract concluded away from our premises, in person, with a business employing five people or fewer and for a subject outside its main field of activity. In that case only, you have fourteen days.
Because the service is supplied immediately, you are then asked to expressly request immediate performance and to waive that right, through a dedicated checkbox, separate from your acceptance of these terms and never ticked in advance. If you do not waive it, you may withdraw by writing to contact@muzau.fr, and we refund you within fourteen days, less what you have already consumed.
We undertake to make the service available to you and to keep it working, with a professional's care. This is an obligation of means: we do not guarantee uninterrupted operation.
The service may be suspended for maintenance. We give notice where we can, and pick the least disruptive hours where we cannot.
One point matters more than it may seem: your agents rely on artificial intelligence models. They produce plausible results, not certain ones. We guarantee that the service works, never that an answer produced by an agent is accurate, complete or suited to your situation. Checking what goes out in your name is yours to do, and the controls that let you do it are in the product.
You are responsible for how you use the service and for what your agents send in your name. In particular: for the legal basis of your sendings, for compliance with marketing rules, for the accuracy of the information you entrust to your agents, and for the permissions you grant them over your tools.
You undertake not to use the agents to screen job applications, evaluate employees, decide on the granting of credit, gate access to an essential service, or for any other use falling under Annex III of the European regulation on artificial intelligence. Those uses are subject to a specific regime that the service does not cover today.
You also undertake not to circumvent the service's safeguards, nor to use it for unsolicited bulk sendings, unlawful content or misleading content.
Our liability is limited to direct and foreseeable damage, and capped at the sums you have actually paid us over the three months preceding the event giving rise to it.
Indirect and non-material damage is excluded, in particular any loss of turnover, profit, orders, customers, reputation or data, as well as third-party claims brought against you.
We are not answerable for the consequences of a failure in third-party services that you connect yourself, nor for the use you make of the content your agents produce, nor for decisions you take on the strength of an output of the service without having checked it.
These limits do not apply where the law forbids them: they cover neither gross negligence, nor wilful misconduct, nor personal injury, and they cannot be relied on against you if you are covered by consumer law.
The processing of personal data is described in our privacy policy. For your own customers' data, which we process on your behalf, the data processing annex forms an integral part of the contract.
The service, its code, its brand and the agents themselves remain our property. An agent is part of the platform we make available to you: configuring one does not make you its owner. Your subscription gives you a personal, non-exclusive and non-transferable right to use it for the term of the contract.
Your data, your documents and what your agents produce for you remain yours. We take no rights over them beyond what is needed to run the service you have asked us for.
On cancellation, you may ask us to export your data by writing to contact@muzau.fr. We then erase it within thirty days, unless you ask us to return it to you first, or the law requires us to keep it.
Documents we are required to keep for accounting or legal reasons, invoices included, are kept for as long as the law requires.
We may change these terms. We will tell you about any substantial change at least thirty days before it takes effect. If it does not suit you, you cancel before that date, at no cost.
The terms that apply to a month already paid for are those in force when the payment was made.
Write to us first at contact@muzau.fr: most disagreements are settled there.
These terms are governed by French law. Failing an amicable settlement, any dispute falls to the French courts.