Terms of Service

Effective date: 1 September 2026 Operator: TATUI SAS, a société par actions simplifiée with share capital of €1,000, registered office 229 rue du Faubourg Saint-Honoré, 75001 Paris, France, SIREN 984863746, RCS Paris ("copperly", "we", "us"). Contact: contact@copperly.ai

These Terms are a contract between you and copperly. By creating an account or using the service, you accept them. If you do not agree, do not use the service.

You may use the service for your personal or professional purposes. A few clauses apply only if you are acting for professional purposes; each says so. If you are a consumer — a natural person acting outside your trade, business, craft, or profession — you keep every right your national consumer law gives you, and nothing here limits it. Where a clause below cannot lawfully apply to a consumer, it does not apply to you.

1. The service

In plain words: You describe an electronic board in ordinary language; our software generates a circuit design you can preview, refine, and export as manufacturing files. It produces prototypes for makers. No person reviews your design.

copperly is a web application that generates printed-circuit-board designs from natural-language descriptions. It holds a scoping conversation about what your board should do, generates a design and runs it through automated engineering checks, renders a schematic and board preview, lets you export fabrication files for designs that pass the export gate (Section 6), and provides generated bring-up materials.

The service targets simple and medium hobbyist circuits. Output is produced by an automated pipeline that includes artificial intelligence. No person reviews your design. The automated checks verify electrical rules and structure — not that the board does what you intended (Section 8). Output may contain errors and must be independently reviewed and tested before you rely on it.

We may change, add, or remove features. If a change materially reduces what the service does, we will tell you by email or in-product notice. The service is free of charge (Section 3).

2. Accounts

In plain words: You need an account for anything beyond browsing. Keep your password safe, give us a real email, don't share your login, and you must be 18 or over. Using the tool for paid client work is fine.

Some features work without an account (browsing the public gallery; a rate-limited first generation, where offered). Saving designs and export require one.

Provide a valid email address, keep your credentials confidential, and you are responsible for activity under your account. Your login is personal: do not share it or let anyone else use the service through it. Designing boards for your employer or for paying clients is a normal, permitted use — what is not permitted is giving other people access to the service itself (Section 4).

You must be at least 18 years old.

3. The service is free

In plain words: copperly costs nothing. There is no plan to choose, no credits to buy, no card to enter, and nothing is billed to you. We may add paid features later — and if we ever do, you will never be charged for anything without being shown the price and agreeing to it first. What the service contains can still change (Section 1).

The service is provided free of charge. There is no subscription, no usage fee, no prepaid balance, and no payment method held for you. We do not take payments, and no part of the service is billed to you.

We may introduce paid features in the future. If we do, no charge is ever made without the price being shown to you and your agreeing to it beforehand, at that point, for that purchase. Continuing to use the service as it stands is never agreement to pay for it, and nothing in these Terms reserves any right to begin charging you for what is free today without your agreement. If a feature you use today becomes paid, you keep the choice of not paying for it.

This is a promise about price, not about content: as Section 1 says, we may change, add, or remove features, and the service may cease to be offered altogether on the notice in Section 11.

[ADVISOR] two points on the removal of the former Section 3 and of the model withdrawal form. First, the Art. 9 CRD (Art. L221-18, Code de la consommation) right of withdrawal attaches to a distance contract for a price; with nothing charged there is nothing to withdraw from and nothing to refund, which is the reasoning for deleting both — please confirm it rather than treat it as settled, and if the right is read as attaching to a free distance contract, the clause and the statutory model form go back in unchanged (verbatim text: docs/PRICING-LEARNINGS.md §9.3–9.4). Second, these Terms remain a contract for the supply of a service even with no consideration flowing to us: the absence of a price does not turn the arrangement into a bare licence, and the consumer guarantees in Section 8 are drafted on that basis.

4. Acceptable use

In plain words: Design what you like within the safety envelope, including for clients. Don't design things meant to harm, don't try to trick the safety gate, don't work around the usage limits, and don't give other people access to the service or repackage it as your own.

You agree not to:

• use the service unlawfully, or to design devices intended to cause harm, injure, surveil unlawfully, or interfere with radio, medical, or safety equipment;
• bypass, mislead, or disable the safety scoping and export gate (Section 6), including by renaming nets or misdescribing a design's purpose;
• circumvent the rate limits, or create multiple accounts to work around them;
• probe, scrape, overload, or disrupt the service, or access it by automated means other than interfaces we provide;
• submit payment-card numbers, government identifiers, health records, biometric data, or other sensitive personal data into prompts or conversations;
• use the service or its output to train, develop, or improve a competing AI model, or extract our block library as a dataset;
• give others access to the service through your account, or resell, sublicense, or white-label the service itself — for example by offering generation to third parties as your own service, or operating it on their behalf. Using the service yourself to produce designs, including for an employer or paying clients, and selling the boards you design, are all permitted (Section 5);
• misrepresent our output as independently engineered or certified.

Export controls and sanctions. You must comply with applicable EU, French, US, and UK export-control and sanctions laws. You may not use the service if you are subject to sanctions or located in an embargoed territory, nor use it to design items for prohibited military, nuclear, or weapons end-uses. [ADVISOR] confirm whether any dual-use control applies to generated design files.

Unlawful content. To report unlawful content on a public page, email abuse@copperly.ai with the location and the reason. We will acknowledge, decide without undue delay, tell you the outcome and your options for challenging it, and inform the affected user (EU Digital Services Act Art. 16).

We may suspend or terminate accounts for violations (Section 10).

5. Intellectual property and publication

In plain words: Your designs are yours — prompts, the design, and the exported files. Fabricate them, sell them, open-source them. Nothing you make is published until you publish it, which you do by pressing "See instructions" on a board you have built. Publishing gives the project a public page under your handle and puts the design under an open-hardware licence, so anyone may build it, change it, and sell it. We never publish your conversation. Publishing is not reversible as to copies already taken, and the page can stay up even if you delete your account — without your name on it. We keep ownership of the service itself and our block library.

Your content. You retain all rights in your prompts, conversations, designs, and exported files, subject to any third-party rights in the underlying models or their outputs. You may use your designs for any purpose, commercial or not, with no attribution owed. We do not use your designs or conversations to train general-purpose AI models.

Our licence to your content. You grant us a worldwide, non-exclusive, royalty-free licence to host, store, reproduce, process, render, and back up your content and display it to you — solely to operate, secure, and support the service. For content you have not published, this licence ends when you delete the content or your account, except for backups pending expiry. For a project you publish, the licence described below applies instead, and it survives.

Publication is your act. Nothing you create is published unless you publish it. You publish a project by pressing "See instructions" on a board you have built, while signed in; that button states what publication means before it does it. Until then the design is reachable by you alone — there is no default publication and nothing is inferred from your silence.

Publishing creates a public page at copperly.ai/<your handle>/<project> and makes available, exhaustively, only:

• the project name, title, and description you confirmed or wrote when publishing;
• images of the board: the rendered preview, the schematic, and the board view;
• the design source — the tscircuit files — and the compiled circuit description;
• the fabrication package and, where one exists, the firmware image, each downloadable by a signed-in user;
• the bill of materials, and the indicative cost estimate computed from it (an estimate, not a quotation);
• the build and bring-up instructions: pinout, assembly and flashing steps, the expected self-test output, and troubleshooting;
• the licence the project is under, its part number, and the date it was first published;
• your author handle, and the number of times the project has been liked and downloaded.

Nothing else. In particular, we never publish your conversation or your prompts, your email address, or any identifier of your account.

The default licence: CERN-OHL-P v2. Unless otherwise stated on the project page, a project you publish is licensed to everyone under the CERN Open Hardware Licence Version 2 — Permissive (CERN-OHL-P v2), whose text ships inside the fabrication package. You are the licensor. That licence is permissive: a recipient may fabricate, modify, and sell without publishing anything back, and owes you no royalty — what it does require of them is that they keep the copyright and licence notices with the source and say what they changed. It is also perpetual and irrevocable and runs to the world, so once you have published, the design itself is beyond recall no matter what we or you later do. Do not publish a design you are not willing to give away on those terms. [ADVISOR] confirm CERN-OHL-P v2 as the default, and that this clause and the block-library clause below are to be read together: the blocks as embedded in a published design travel under CERN-OHL-P v2, while what remains ours is the library as a curated compilation. The two must not be capable of being read against each other.

Withdrawal, and our continuing licence in a published page. A published project can be taken off the public web: you can do it yourself at any time from the project page, we do it when we act on a report under Section 4, and we may do it when you delete your account — but deleting your account does not require us to, because of the licence below. Withdrawal stops further public use, but cannot withdraw copies others have already made, and it does not undo the CERN-OHL-P v2 licence already granted to whoever holds a copy.

For the page itself — the copy, images, instructions, and the arrangement of them, which are ours to host rather than licensed to the world — you grant us, when you publish, a worldwide, non-exclusive, royalty-free, sublicensable and irrevocable licence to host, store, reproduce, render, adapt for display, and publicly communicate that project content. This licence survives the withdrawal of the project and the deletion of your account, and it is limited in two ways that are part of the grant:

• Purpose. It is granted solely to operate, preserve, and promote the service and its gallery — including keeping published pages reachable so that a board someone already holds does not lose its instructions. It is not a general licence to use your content for anything else, and we do not acquire ownership of it. [ADVISOR] confirm the purpose limitation is drawn tightly enough: an unlimited perpetual grant over consumer content risks being an unfair term (clause abusive, Art. L212-1, Code de la consommation), and the point of naming a purpose is that the grant falls away outside it.
• Your name does not survive it. The design, title, description, and instructions are not personal data; your author handle is. So if you delete your account, the page may remain and the attribution does not: the author line becomes an anonymous credit, and your handle, email, and account identifiers are erased as the Privacy Policy says. We will not claim your erasure right is satisfied by anything less. [ADVISOR] confirm this split under GDPR Art. 17 — content retained on the purpose above, identifiers erased — and that the pre-publication notice makes it clear enough to be relied on.

Block library. Our library of verified circuit blocks is our intellectual property or that of our licensors. We license it to you as embedded in your generated designs and exports: you may fabricate, modify, and distribute designs containing library blocks without restriction — including by publishing a design under the licence above — but you may not extract the library itself for use as a competing library or dataset.

Third parties that read published pages. A published page is on the open web, and we let search engines and answer-engine crawlers read it — including Googlebot, Bingbot, GPTBot, ClaudeBot, and PerplexityBot — because being found is what publishing is for. Our promise not to train general-purpose AI models on your designs binds us; it cannot bind them. A third party that reads a published page may use what it finds under the licence you published under and its own law, including to train an AI model, and we neither control that nor are responsible for it. Nothing prevents that but not publishing, and an unpublished design is served to nobody. [ADVISOR] confirm whether admitting these crawlers, given the author handle on the page, needs its own statement in the Privacy Policy as well as here.

Third-party components. Part footprints and symbols may originate from third-party sources under their own terms. [ADVISOR] verify pass-through obligations of embedded footprint and symbol licenses in exported files.

Feedback. If you send us suggestions, we may use them without obligation to you.

6. Safety exclusions — what the service will not design

In plain words: This is a prototyping tool for low-voltage maker electronics. It refuses to export designs involving mains power, anything above 48V, on-board lithium charging, unprotected bare lithium cells, or medical and automotive use. The automated checks cannot see everything, so a design that passes is not a safety-verified design.

The service is scoped to low-voltage (≤48V) hobbyist circuits. The following are blocked from fabrication export:

• mains-voltage connections and any net above 48V;
• LiPo and Li-ion charging circuitry on the board, and unprotected bare lithium cells;
• designs described for medical, automotive, life-supporting, or other safety-critical use.

Uses you must not put a generated design to, whatever the gate says. Generated designs are prototypes and are not authorised for life support or life-sustaining systems, human implantation, medical devices, nuclear facilities, aerospace or aviation, military or weapons systems, vehicle safety systems, or any other application where a failure could lead to death, personal injury, or significant property damage. If you use a design in any of these, you do so entirely at your own risk and you indemnify us under Section 10.

Skill and safety are yours. Assembling, soldering, powering, and operating electronics carries real risk of burns, fire, and injury. Deciding whether you have the skill and equipment to build and test a board safely is your responsibility, as is using appropriate protective equipment and following the safety guidance of any component you use.

A board merely powered by a protected, pre-assembled battery pack, with no charging circuit on the board, is permitted and produces an advisory rather than a block. So does a power-entry connector without a fuse. Advisories appear in the product and in the exported package's README; acting on them is your responsibility.

Limits of the checks. The gate works from the compiled netlist and your description. It cannot detect what those do not show — a mislabelled high-voltage rail, a battery's chemistry, or your actual intended use. Passing the gate means the automated exclusions did not trigger, not that the design is safe. You agree not to use generated designs in any excluded category, even if the gate did not catch it.

Prototype, not certified. Every exported design is a prototype generated by an automated tool. It carries no safety certification of any kind (no CE, UL, FCC or equivalent). Obtaining any required certification, marking, radio approval, or regulatory clearance before distributing or operating a board is entirely your responsibility, as is compliance with product-safety, EMC, RoHS, and waste-electronics rules if you place boards on the market.

7. Fabrication and ordering — you are your own importer

In plain words: Unless you order a board through copperly, we don't manufacture anything and we don't order anything for you. You download your files and order from a fabricator of your choice. That purchase is between you and them — including customs and import duties.

Unless you place an order through copperly under the Fabrication Terms, copperly provides design files only, and we do not manufacture, sell, broker, ship, or import physical boards or components for you.

When you order fabrication of an exported design yourself, you contract directly with the fabricator. You are the customer and, for cross-border orders, the importer of record: customs duties, import taxes, and the compliance of imported goods with local law are yours. Our ordering guide and any mention of a fabricator is informational convenience — not a recommendation, agency, or warranty.

Ordering through copperly. Where the service offers to fabricate a board for you, that order is governed by separate Fabrication Terms, shown and accepted when you place it. They apply only to orders placed under them; for everything else, this Section applies unchanged. [ADVISOR] this section must be re-reviewed by product-safety counsel before any integrated or white-label ordering ships: selling a physical board engages the EU Product Liability Directive (2024/2853), the General Product Safety Regulation, and CE/FCC conformity duties that cannot be disclaimed contractually. Confirm that (a) a separate set of Fabrication Terms accepted per order, beside these Terms, is the right structure for acting as a build-to-print fabricator, and (b) reserving them here means introducing them later is not a material change under Section 13.

8. Disclaimer of warranties

In plain words: The service and everything it generates are provided as-is. Nobody promises your board will work or be fit for your purpose. Budget for prototype iterations — that is what prototyping is. If you build a project another maker published, nobody promises you anything either — not the author who published it, and not us. If you are a consumer, your legal guarantees against us still apply, whichever design you built.

Subject to the legal guarantees below, and to the maximum extent permitted by law, the service and all output are provided "as is" and "as available", without warranty of any kind, express or implied, including merchantability, fitness for a particular purpose, accuracy, and non-infringement. In particular we do not warrant that generated designs will function when fabricated, that the automated checks catch every error, that the service will be uninterrupted, that listed components are available or correctly specified, or that output will not resemble designs generated for others.

A project another maker published (Section 5). You may build a project someone else published on copperly. If you do:

• No warranty from the author. The author licenses the design to you under the licence stated on the project page — CERN-OHL-P v2 unless it says otherwise (Section 5) — and that licence is granted without any warranty and expressly disclaims fitness for purpose and non-infringement. Someone sharing a prototype they made is not selling you a product, and nothing on a project page is a representation that the design works, is complete, or is safe.
• No warranty from us either. Everything above in this Section applies unchanged to a design we generated for another user: we do not warrant that it functions when fabricated, that its checks caught every error, that its bill of materials is available or correctly specified, or that its instructions, cost estimate, or firmware are accurate. We did not review it beyond the same automated checks, and we do not review what an author wrote about it before publication.
• Section 6 applies to it exactly as to your own design. The board you fabricate from another maker's project is a prototype with no safety certification of any kind, the excluded uses in Section 6 remain excluded however you obtained the design, and deciding whether you have the skill and equipment to build and test it safely is yours. The automated exclusions ran against the author's description of their intended use, not yours.
• Section 7 applies to it exactly as to your own design. You order from the fabricator, you are the customer, and for a cross-border order you are the importer of record. Placing such a board on the market makes the certification and compliance duties in Section 6 yours, not the author's and not ours.
• Publishing does not make you a warrantor. If you are the author, you owe the people who build your published project no warranty either. That changes if you go on to sell them a board or a kit — then you are a seller under your own law and this Section cannot and does not limit what you owe them. [ADVISOR]

[ADVISOR] confirm this clause holds where the recipient is a consumer: between two makers the design is shared free of charge and is not a consumer contract, so the recipient's legal guarantees run against us as supplier of the service and not against the author — which is what the paragraph below says, and what CERN-OHL-P v2 §5 alone would not have said.

Consumers — your legal guarantees are unaffected. The disclaimers above, including those about another maker's project, do not apply to any right you have by law. In particular you have the legal guarantee of conformity for digital content and services (Art. L224-25-1 and following, Code de la consommation): we owe you a service that matches its description and works as such a service normally does, we must provide the updates needed to keep it conforming, and if it does not conform it is for us to prove otherwise, not for you. If the service does not conform you may require us to bring it into conformity and, failing that, terminate this contract. The law's price-reduction and reimbursement remedies operate on what you have paid — while the service is free there is nothing to reduce or reimburse, and your other remedies are untouched. [ADVISOR] confirm this is the right way to state the Art. L224-25-12 remedy set for a service supplied without a price, rather than omitting the remedy or restating it as if a price existed. You also keep the guarantee against hidden defects (Art. 1641 and following, Code civil). If you live outside France, the equivalent rights under your own law apply instead. These guarantees are free of charge and independent of anything in these Terms.

The guarantees are not displaced by the open-hardware licence. The conformity guarantee covers the service, and the service includes serving you another maker's published project — its page, its files, and its downloads. A licence between you and an author is a separate matter from what we owe you as supplier: CERN-OHL-P v2 §5 disclaims the licensor's warranty flatly, and that flat disclaimer is not what governs our obligations to you. Where the licence text and this Section could be read against each other in a contract with a consumer, this Section prevails, because a warranty disclaimer copied into a consumer contract is unenforceable in France in exactly the part that matters. [ADVISOR] confirm this is the right way to inherit the Art. L224-25-1 and following carve-out into the downstream scenario, rather than letting the licence's own disclaimer stand as the whole answer.

9. Limitation of liability

In plain words: If something goes wrong, what we owe is capped at USD 100 — or at what you paid us in the last year, if that is ever more. The service being free does not reduce that USD 100: it is a floor, not a ceiling that free use erodes. We are not liable for indirect losses such as a wasted fabrication run — including a run of a board another maker designed and published. Limits that the law does not allow us to set do not apply.

To the maximum extent permitted by law:

• we are not liable for indirect, incidental, special, or consequential damages, or for lost profits, lost data, or the cost of fabricating, assembling, or repairing boards based on generated designs — whether the design is one we generated for you or one another maker published;
• our total aggregate liability is capped at the greater of (a) the amounts you paid us in the 12 months before the event giving rise to liability and (b) USD 100. The service is free (Section 3), so (a) is nil and the cap is USD 100. It is a floor: nothing about the service being free reduces it, and a limb that computes to zero never becomes the cap.

Between makers, we are not in the middle. We are not liable to you for a project another user published — for the design, its instructions, its cost estimate, or anything the author wrote about it — beyond the limits above, which apply to it as they do to anything else the service does. We are equally not liable to an author for what a recipient does with their published project. What the author and the recipient owe each other is governed by the licence in Section 5 and by their own law; we are not a party to it, we do not enforce it, and nobody enforces it on our behalf. Our only role is having generated the design and hosting the page, and this Section is the whole of our exposure for both.

These limits do not apply to death or personal injury, to gross negligence (faute lourde) or wilful misconduct (dol), to liability under the product-liability regime, to our failure to perform an essential obligation of these Terms, to the legal guarantees in Section 8, or to any other liability that applicable law does not permit us to limit or exclude. If you are a consumer, nothing in this Section removes your right to be compensated for loss we cause you — and if a court finds any part of it unenforceable against you, the rest of these Terms continue to apply. These carve-outs are not narrowed by a design having reached you through another maker's project page: a route through a published project is not a route around them. [ADVISOR] confirm our position where a board fabricated from a published project injures someone — the design was generated by our service and hosted by us, which is the case in which the Product Liability Directive (EU) 2024/2853 (software and AI in scope, contractual limitation prohibited) has to be tested against publication by a third-party author, and Section 7's existing product-safety reservation read together with it.

10. Indemnity

In plain words: If you are using the service for professional purposes and someone sues us over what you did with a design, you cover us. If you are a consumer, this section does not apply to you — ordinary law decides who pays for what.

This Section applies only if you are acting for professional purposes. You will defend and indemnify us against third-party claims, and the resulting damages, losses, and reasonable legal costs, arising from: your breach of these Terms, in particular Sections 4 and 6; your fabrication, use, distribution, or sale of a board based on a generated design, including personal-injury, property-damage, and regulatory-compliance claims; content you publish through the service, including infringement claims; and sensitive personal data you submitted in breach of Section 4.

We will notify you of any such claim, let you control its defence so long as you defend it diligently, and cooperate with you. You may not settle in a way that imposes an obligation on us without our consent.

If you are a consumer, this Section does not apply. You remain liable under ordinary law for loss you cause us through your own fault, in particular by breaching Section 4 or using a design in a way Section 6 prohibits — nothing more.

11. Termination

In plain words: You can close your account whenever you want — it happens at once and cannot be undone, so export your data first. We can suspend or close accounts that break these Terms — with notice, a reason, and a chance to fix it, except in serious cases. Nothing is owed either way: the service is free.

By you. You may stop using the service and delete your account at any time from your account settings. Deletion is immediate and irreversible: there is no grace period and no way to cancel it, so we ask you to type a confirmation phrase first. Export your data before you confirm — afterwards there is nothing left to export. The mechanics, the confirmation email and the records we must keep are in the Privacy Policy. We never require you to do anything else — spend down a balance, give a reason, or speak to anyone — before deleting your account.

By us. We may suspend or terminate your account for material breach (including Sections 4 and 6) or for legal compliance. Except where the breach is serious, where suspension is needed to protect the service or other users, or where the law requires immediate action, we will give you notice stating the reason and a reasonable period of at least 14 days to remedy it. You may contest any suspension or termination by writing to contact@copperly.ai, and we will give you a reasoned reply.

We may also stop offering the service altogether, on at least 30 days' notice.

Effect. On termination your licence to use the service ends. You have paid us nothing, so nothing is owed to you and nothing of yours is forfeited — the designs and data in your account are yours to export up to the moment it closes (Section 5, and the Privacy Policy for how). A project you published may stay published after your account closes: Section 5 says what can survive — the page — and what cannot, which is your name on it. Sections 5, 8, 9, 10, and 12 survive.

12. Governing law and disputes

These Terms are governed by French law. If you are a consumer habitually resident in another country, this does not deprive you of the protection of that country's mandatory consumer law (Rome I Art. 6(2)).

Consumers. Before going to court, please contact us at contact@copperly.ai. If we cannot resolve it, you may refer the dispute free of charge to our consumer mediator — details in the Legal Notices — and you may in any event bring the dispute before the competent court of your place of residence or ours.

Business users. For users acting for professional purposes, the Tribunal de commerce de Paris has exclusive jurisdiction.

13. Changes to these Terms

In plain words: We'll update these Terms as the product evolves. For material changes we give 30 days' notice; continuing to use the service afterwards means you accept them. If you disagree, stop using the service and delete your account before the new version takes effect.

We may revise these Terms — to reflect changes in the service, in the law, or in how we operate. For material changes we will give at least 30 days' notice by email or in-product notice, stating what is changing and why. If you continue using the service after the new version takes effect, it applies to you. If you do not agree, you may stop using the service and delete your account before that date — that is the whole of what leaving costs you, because you have paid us nothing. A revision of these Terms is not how a charge could ever be introduced: Section 3 requires the price to be shown and agreed for the purchase itself. The version and effective date appear at the top; previous versions are archived at /legal/archive.

14. Miscellaneous

If a clause is invalid or unenforceable, the rest stands and the clause is read down to what the law allows. Not enforcing a right is not a waiver of it. You may not transfer these Terms to anyone else. We may transfer them in a corporate transaction, provided your rights are unaffected — and if you are a consumer, we will notify you in advance and you may delete your account before the transfer takes effect.

These Terms, the Privacy Policy, and any feature-specific terms are the entire agreement between us. This does not exclude liability for misrepresentation, does not limit anything we have told you about the service that you relied on, and does not affect any mandatory consumer right. Headings and the "in plain words" summaries are there to help you: where a summary and the detailed wording of a section genuinely conflict, the reading more favourable to you prevails if you are a consumer.

Questions about these Terms: contact@copperly.ai