General Terms of Use and Sale

1. Purpose and acceptance

These general terms (the “Terms”) govern the use of the Chatven service (the “Service”), available at chatven.fr, and the subscriptions and purchases offered on it. The Service is published by Maxim Lyoen-Levecq, a sole trader (entrepreneur individuel) trading as “Chatven” (the “Publisher”), whose contact details are given in the legal notice.

The Service is a tool for tracking and managing a buying and reselling activity: it lets you follow listings, purchases, items, stock and sales, and calculate their margins. It includes a web application, an optional browser extension and features assisted by artificial intelligence.

You accept these Terms by ticking the box provided for that purpose when you create your account. Each subscription or purchase requires a new acceptance, in the confirmation window shown before payment.

Some clauses distinguish the consumer (a natural person who uses the Service outside their professional activity) from the professional user (who uses it for their reselling business, for example as a micro-entrepreneur). Unless stated otherwise, a clause applies to everyone.

2. Account

An account can only be created on the chatven.fr website, with the sign-up form or “Continue with Google”, and can only be used once these Terms have been accepted. The extension cannot create an account: it connects to an existing one. The Service is reserved for natural persons aged at least 18. You undertake to provide accurate information and to keep it up to date.

You are responsible for keeping your password confidential. Tell us without delay at support@chatven.fr if you think someone else has had access to it; changing your password disconnects the devices linked to your account.

The number of devices on which the extension can be connected depends on your plan. You free up a slot by revoking a device from the “My account” page.

3. Use of the Service

You undertake to:

• use the Service lawfully and in accordance with these Terms;
• not attempt to compromise the security or operation of the Service;
• not share your access with third parties, nor circumvent the limits of your plan or the number of authorised devices;
• not use the Service for illegal or fraudulent purposes or purposes contrary to public order;
• not make abusive automated use of third-party sites that breaches their terms or disrupts their operation;
• not republish or resell data obtained through the Service;
• respect the rights of third parties, in particular regarding the personal data that appears in listings (section 10);
• comply with the rules specific to certain items you buy or resell (weapons, alcohol, tobacco, medicines, event tickets, precious metals, counterfeits…): Chatven is a management tool, it does not check what you buy or sell, and you alone are responsible for it.

4. Extension, marketplaces and third-party sites

The optional browser extension is a personal reading tool. It reads a page of a supported site (LeBonCoin, Vinted and the other sites on the “Supported sites” page) only when you ask it to, from your browser and with your own session, at the pace of your clicks, to extract the information of the listings you choose to follow or import, sometimes in a tab opened in the background. It does not browse any site automatically and collects nothing in the background; its only automatic action, on a listing page, is described in the privacy policy. The information read serves your account only: it is not shown to other users, resold or pooled into a shared database.

Chatven is not affiliated with, partnered with or endorsed by LeBonCoin, Vinted or the other platforms mentioned, whose names are trademarks of their owners. Each third-party site has its own terms of use, which may restrict automated access or the reuse of its data. It is up to you to comply with them when you use the extension and the Service; if in doubt, do not use the extension on that site. The Publisher removes a site from the Service if the platform concerned asks it to.

A risk you should know about: a third-party site may, under its own rules and without the Publisher having any say in its decision, limit, suspend or close your account with it, together with the listings, reviews and sales attached to it. The extension acts from your browser, as you would yourself, but the Publisher does not control these sites and cannot guarantee that they will tolerate your use.

Supported sites. The Publisher strives to support as many sites as possible. It does not check their legitimacy, reliability or security, nor those of the sellers who publish on them: the presence of a site in the Service is neither a recommendation, nor a guarantee, nor a partnership. Check a site and a seller before any transaction: the Publisher is not a party to transactions concluded on a third-party site.

5. Estimates and AI features

Some features, marked with a sparkle, use artificial intelligence (the Claude model, provided by Anthropic): authenticity check, description writing, market price search. The data sent for each of them is described in the privacy policy. AI is included in your plan up to a monthly allowance, shown as a percentage; beyond that, a top-up may be offered (section 7).

Estimates (market price, margin, tax provisions, listing score…) are indicative: they are based on the data available and may be inaccurate. They are not commercial, financial, legal, tax or accounting advice, and you remain the judge of your buying, selling and pricing decisions.

The tax estimates and registers produced by the Service help you prepare your obligations. They are never sent to the authorities and replace neither your returns nor the advice of a professional.

6. Authenticity check

Authenticity check. This service gives an automated opinion: an artificial intelligence (Claude model, provided by Anthropic) examines only the photos and information supplied by the user and flags what seems different from the originals it knows. It has no link with any brand, accesses no official database, sees only what is photographed and can be wrong either way: a counterfeit item may show no visible difference, a genuine one may show some (wear, variant, photo quality). It is not an authentication, a certificate or an expert appraisal, and never guarantees that an item is genuine or counterfeit. The Publisher undertakes to perform the analysis as described here and to display its limits with each opinion; an opinion given within these limits is not, in itself, a breach, even if it proves inaccurate, without prejudice to the legal guarantee of conformity (article 16). The user’s photos, description and questions are sent to Anthropic (United States) for the duration of the analysis.

The result is for the user’s personal use only. It may not be presented as proof, an expert appraisal or an accusation, nor shared or used to claim that an item is counterfeit or to accuse a seller or any third party. The suggested message to the seller is a draft of neutral questions: if the user sends it, they are its author and undertake not to add any accusation. The user remains solely responsible for their purchases and resales, in particular for not offering for sale an item they have reason to believe is counterfeit.

Each analysis is kept (date, photos analysed, AI model used, result shown) so that what was displayed can be retrieved, as long as the user does not delete it. Before their first check, the user confirms they understand it is an AI opinion and not an authentication; this consent is archived with the wording shown.

7. Plans, trial and payment

The Service is offered as two paid subscriptions, Solo and Pro, billed monthly or yearly. Their content (features, limits, number of devices, AI allowance) and their prices, in euros, VAT not applicable (art. 293 B of the French General Tax Code), are shown on the “Subscription” page and repeated before payment. A quote-based offer may be agreed for larger needs. Subscribers to a former plan keep it on the terms they subscribed to. Without a current subscription, your account remains viewable and your data exportable with no time limit, but you can no longer add data to it.

Free trial: each subscription starts with a free trial of thirty (30) days, limited to one trial per account per twelve-month period; if you have already had one in the last twelve months, the subscription is paid from the day you subscribe, and the confirmation window says so. The trial requires you to register a bank card. At its end, the subscription automatically becomes paid at the displayed price, unless you have cancelled it before; an email warns you three (3) days before the first payment. Cancelling during the trial means nothing is charged.

Order: before payment, a window summarises the plan, its price, its term, the date and amount of the first payment, and where the withdrawal button is located. There you accept these Terms and request, by a separate box that is not ticked in advance, that the Service start immediately (section 8). The text displayed, its version, its language and the date are archived and sent to you on request.

Payment: payments are processed by our provider Stripe. The Publisher never has access to your bank card data and does not store it.

Term: a subscription is taken out for one month or one year depending on the option chosen, and is automatically renewed for the same term, by automatic payment, until it is cancelled (section 9).

Price: the price of your subscription is the one you accepted when subscribing. A change to the displayed prices only applies to new subscriptions, and if the Publisher moves your subscription to another plan, your price does not go up. Should the Publisher raise the price of a current subscription (for example at the end of a negotiated rate), it would announce it to you by email at least thirty (30) days before the renewal date concerned; you could cancel free of charge before that date, and the increase would not apply. If a plan is withdrawn, you are told in advance and choose another plan yourself: you are never moved automatically to a more expensive or less complete offer.

One-off purchases: when their plan allows it, subscribers can buy packs of authenticity checks, valid for twelve (12) months from purchase, and AI top-ups, which are added to their AI reserve, are used once the plan’s allowance is exhausted and remain available until used. These are one-off payments, with no renewal, whose price is shown before payment.

If a payment fails or is rejected, it may be retried; if it does not go through, the Publisher may suspend paid features. Your account then remains viewable and exportable, as without a subscription.

8. Right of withdrawal

Period: if you are a consumer, you have fourteen (14) days from the conclusion of the contract to withdraw, without giving any reason (art. L221-18 et seq. of the French Consumer Code). For a subscription, this period runs from the day you subscribe, including during the free trial: with a 30-day trial, it therefore expires before the first payment. For a pack or a top-up, it runs from the purchase. The Publisher applies the same terms to a professional user who withdraws.

Effects: withdrawal ends the contract and access to paid features immediately. Since you requested immediate performance of the Service when subscribing, you remain liable for the amount corresponding to the service supplied until you communicate your decision, calculated in proportion to the agreed price (art. L221-25); the rest is refunded to you no later than fourteen (14) days after receipt of your decision, using the same means of payment (art. L221-24). During the trial, nothing has been charged and nothing is owed. The Publisher may, as a goodwill gesture, refund more.

How to withdraw: the simplest way is the “Withdraw from the contract here” button on the “Subscription” page of your account, available throughout the period. You can also send us the model form in the appendix, or any other unequivocal statement, by email to support@chatven.fr or by post to the address given in the appendix. We acknowledge receipt of your withdrawal without delay, by email.

Check packs: you can withdraw from a pack for fourteen (14) days after purchase, with the “Withdraw from this pack” button in the “My packs” section (“Authenticity check” page). Since you asked to use the pack immediately, you remain liable for the checks already carried out: unused credits are removed and their share of the price is refunded to the original means of payment. Your subscription is not affected.

AI top-ups: a top-up is added to your reserve as soon as it is paid. By buying it, you expressly request this immediate addition and acknowledge that you lose your right of withdrawal once it has taken place (art. L221-28, 13° of the French Consumer Code).

9. Cancellation and account deletion

Cancellation: you can cancel your subscription at any time and in a few clicks from the “Subscription” page of your account, with the “Cancel subscription” button (art. L215-1-1 of the French Consumer Code). You receive an email confirmation stating the end date of the contract. Cancellation ends the contract for the future, at the end of the current period: access to paid features is kept until that date, after which your account remains viewable and your data exportable with no time limit, but you can no longer add data to it. Until that date, you can reactivate the subscription.

Annual subscriptions: in accordance with article L215-1 of the French Consumer Code, the Publisher informs the consumer by a dedicated email, no earlier than three months and no later than one month before the deadline for rejecting renewal, of their option not to renew the contract. Failing such information, the consumer may terminate the contract free of charge at any time from the renewal date.

Cancellation does not give rise to a refund of the current period, except where you exercise the right of withdrawal (section 8), invoke the legal guarantee of conformity (section 16) or in the cases provided for in sections 9 and 14.

Account deletion: you can delete your account at any time, without writing to us, from the “My account” page (“Danger zone” section). Deletion is immediate and permanent: your subscription is cancelled first, then your data and photos are erased, except for what the privacy policy specifies (logs, payments and invoices). It does not give rise to a refund, except in the cases listed above: if you are still within the withdrawal period, exercise it before deleting your account. Remember to export your data first. Unused account: an account with no sign-in for 3 years is deleted in the same way, after a notice email sent 30 days beforehand to the account’s address; signing in before then is enough to keep it. An account with an ongoing subscription, trial included, is never deleted for this reason.

The Publisher may suspend or close an account in the event of a serious breach of these Terms, fraud or non-payment, after informing you by email and, except in an emergency or where required by law, giving you a reasonable period to remedy it and export your data. The decision is explained in writing, and you can contest it at support@chatven.fr: a person reviews your request. Unless you are in breach, closing a subscriber’s account gives rise to a refund of the paid, unused period. The only automatic measure: after several AI requests blocked by our filters, the AI features of your account are paused for at most twenty-four (24) hours, while a person reviews them; the message shown says so, and you can ask for that review at the same address.

10. Your data

The data you record (categories, listings, purchases, items, prices, sales, photos) belongs to you. The Publisher claims no ownership of it.

You can export your data at any time from the “My account” page (PDF summary, CSV inventory, complete data in JSON), correct it in the application and delete it (section 9).

Third-party data: the listings you follow or import may contain personal data about third parties (a seller’s name or username, rating, location…). You undertake to use this data only for your own purchases and sales, not to publish it, not to build a file of sellers, not to use it to profile, solicit or accuse these people, and to comply with data protection rules. Importing from a seller profile is only allowed for your own profile. Third-party data you enter yourself (a buyer’s name, for example) is your responsibility.

How the Publisher processes your personal data (data processed, providers, transfers, retention periods, your rights) is described in the privacy policy, which these Terms do not repeat.

11. Intellectual property

The code, interface, graphic elements and the Chatven brand belong to the Publisher. For as long as your account exists, you have a personal, non-transferable right to use the Service; you may not copy it, decompile it or resell access to it.

You authorise the Publisher to host, reproduce and process the content you record (texts, photos) only to the extent necessary to provide you with the Service and to produce the aggregated statistics described in the privacy policy.

12. Availability

The Publisher makes its best efforts to keep the Service available. Maintenance interruptions may occur; they are announced whenever possible.

The Service depends on providers (hosting, payment, AI) and on the third-party sites whose pages it reads. When a third-party site changes its pages, a feature may stop working on that site until the Publisher adapts it, which it strives to do as quickly as possible.

13. Liability

13.1 What the Publisher undertakes to do. The Publisher undertakes to:

• provide the features described for the plan subscribed to, in line with their description, together with the updates needed to keep them in conformity;
• implement reasonable means to keep the Service available and your data secure, as described in the privacy policy;
• calculate margins, estimates and provisions according to the method presented in the Service, and correct without undue delay any error reported to it;
• inform you of an incident affecting your data, under the conditions laid down by law.

13.2 What does not depend on the Publisher. The Publisher is not liable for:

• decisions a third-party site takes regarding your account with it (section 4);
• buying, selling or pricing decisions you take on the basis of estimates presented as indicative (section 5), unless the estimate displayed does not match the calculation described;
• transactions concluded on third-party sites, to which it is not a party, nor the conduct of the sellers and buyers who publish there;
• an event of force majeure (art. 1218 of the French Civil Code).

13.3 If you are a consumer, no clause of these Terms limits your right to compensation or your statutory guarantees.

13.4 If you use the Service for your professional activity, the Publisher’s liability is limited to direct and foreseeable damage, and capped at the sums you paid for the Service during the twelve (12) months preceding the event giving rise to liability. This cap does not apply in the event of gross negligence or wilful misconduct, or of personal injury.

13.5 Your liability. If a third party (site, seller, authority) holds the Publisher liable because of a use of the Service contrary to these Terms of which you are the author, you bear the consequences to the extent of your fault.

We recommend that you export your data regularly (section 10).

14. Changes to the Terms and the Service

The Publisher may change these Terms or the Service for a valid reason: a change in the law, security, the addition, modification or withdrawal of a feature, a change of provider or of a third-party site. These changes are free of charge for you.

A change that is unfavourable to you is announced to you by email at least thirty (30) days before it takes effect, with its content and its date. You may cancel free of charge before that date; if you are a subscriber, the paid share of the unused period is then refunded to you on request. Prices of current subscriptions follow section 7.

A change that is not unfavourable to you (correction, clarification, new feature, price reduction) applies as soon as it is published. The date of the version in force is shown at the top of this page.

A permanent shutdown of the Service is announced to you at least ninety (90) days in advance; until then you keep access to the export of your data, and the paid share of the unused period is refunded to you.

15. Mediation, governing law and disputes

In accordance with article L612-1 of the French Consumer Code, the consumer may have free recourse to a consumer mediator with a view to the amicable resolution of a dispute, after sending a written complaint to our customer service. The mediator’s contact details are given in the legal notice.

These Terms are governed by French law. If you are a consumer residing in another country of the European Union, you keep the protection of the mandatory provisions of the law of your country. Failing an amicable resolution, the dispute is brought before the competent courts; the consumer may refer it, at their choice, to the court of the place where they lived when the contract was concluded or when the harmful event occurred (art. R631-3 of the French Consumer Code).

These Terms are offered in French, English, Spanish and German. The version binding on you is the one in the language in which you accepted them.

16. Legal guarantee of conformity

The Service is a digital service supplied continuously throughout the subscription period. As such, it is covered by the legal guarantee of conformity provided for in articles L224-25-12 et seq. of the French Consumer Code, the content of which is reproduced below in accordance with article D211-4. The boxed text is a French regulatory template; its translation is provided for information.

To invoke it, write to us at support@chatven.fr describing the defect observed.