Terms of Service

Last updated: 8 September 2026. Previous version: 10 April 2026.

These Terms of Service (“Terms”) govern your use of harness.design (the “Service”) operated by Bundled Up Limited (company number 9413321, NZBN 9429053519184), a New Zealand registered company (“Bundled Up Limited”, “we”, “us”). By accessing or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

Definitions

In these Terms:

Service means harness.design as a whole: the web application at app.harness.design, the desktop application for macOS and Windows, the MCP server and any API we provide, the Parts Catalog, the documentation at docs.harness.design, and all software, data, content, and materials that Bundled Up Limited makes available through any of them.
Software means the client and server software that makes up the Service, including the desktop application and every update to it.
Content means all text, graphics, icons, images, user-interface designs, layouts, workflows, documentation, videos, and data in the Service, other than Your Content and the manufacturer material described in section 8.
Parts Catalog (or Catalog) means the collection of manufacturer part records, properties, cavity designations, compatibility relationships, descriptions, and images that Bundled Up Limited assembles and makes available through the Service.
Format Specification means the specification of the .harness file format: the JSON Schema files, the editing guide, the format reference, and the topic pages published under docs.harness.design/files/harness/, together with the JSON format page.
Your Content means the harness designs, part libraries, part images, notes, team logos, and other material that you create or upload using the Service.
Automated Access means access to the Service by any means other than a person using its user interface, and includes scripts, bots, crawlers, scrapers, AI agents, and API or MCP clients.

1. Acceptance of Terms

By creating an account or using the Service, you acknowledge that you have read, understood, and agree to be bound by these Terms. You also accept these Terms when you install or first run the desktop application, when you connect an AI assistant to your account, and when you keep using the Service after we have told you about updated Terms.

If you use the Service on behalf of a company or other organisation, you confirm that you have the authority to bind it to these Terms, and “you” includes that organisation.

2. Safety and Design Tool Disclaimer

harness.design is a design and documentation tool only. It is intended to assist users in creating wiring harness diagrams and related documentation.

Bundled Up Limited does not warrant that any design produced using the Service is safe, accurate, complete, compliant with any vehicle electrical standard (including but not limited to ISO 6722, SAE wiring standards, FMVSS, or AS/NZS standards), or suitable for installation in any vehicle, machine, or electrical system.

Users bear sole responsibility for independently verifying the accuracy, safety, and regulatory compliance of all designs before manufacture and installation. No output of the Service should be treated as engineering certification or professional advice.

Parts Catalog data, including part images, is provided for convenience. It originates from manufacturer sources, may be incomplete, out of date, or wrong, and an image may not depict the exact variant of a part. Always verify every part against the manufacturer’s current datasheet before manufacture.

3. Eligibility

You must be at least 13 years old to use the Service. By using the Service, you represent that you meet this requirement.

Users under 18 must have parental or guardian consent.

4. Accounts

Users must provide accurate information when creating an account
You are responsible for maintaining the security of your credentials and account
You are responsible for all activity under your account, including anything done by an AI assistant or other tool you have connected to it
Each account is for one person. Do not share your credentials, create accounts by automated means, or hold multiple accounts to get around plan limits
A Pro seat is for one named person. Seats may not be shared between people or rotated among them, and we may check that seats are used this way
Account deletion requests can be made by emailing support@harness.design

5. Our Intellectual Property

The Service, including the Software, the Content, and the harness.design name and logos, is owned by Bundled Up Limited or its licensors and is protected by copyright, trade mark, and other intellectual property laws of New Zealand and other countries. The Parts Catalog is dealt with separately in section 8, and the Format Specification in section 9. Except for the licence in section 6 and the format licence in section 9, nothing in these Terms gives you any right, title, or interest in the Service, and all rights not expressly granted are reserved. You may not remove, obscure, or alter any copyright, trade mark, or other proprietary notice in the Service.

Feedback

Any feedback, suggestions, or ideas you submit to Bundled Up Limited regarding the Service may be used by Bundled Up Limited freely and without restriction, obligation, compensation, or attribution to you.

6. Your Licence to Use the Service

Subject to these Terms and your plan, Bundled Up Limited grants you a limited, non-exclusive, non-transferable, non-sublicensable, revocable licence to access and use the Service to design, document, and produce wire harnesses for yourself, your organisation, and your clients, including for commercial manufacture. This licence covers the ordinary use of the Service as a harness design tool. It does not include any of the uses described in section 10.

Desktop application

For the desktop application, this licence also lets you install and run it on devices you own or control, signed in to your account, and receive updates. The desktop application checks your plan when it is online and remembers it for up to 30 days while offline. You may not copy the desktop application to devices you do not control, distribute it, or make it available to anyone who does not hold their own account.

7. Your Content

All of Your Content, including wiring harness designs, belongs entirely to you
Designs are private by default and are not visible to other users unless you share them
You may share a harness by making it public (viewable read-only by anyone with the link, with no account required) or, on the Pro plan, by inviting specific email addresses to view it in read-only mode. You may revoke email-based access at any time
People you share a harness with may duplicate it to their own account. The duplicate becomes an independent design under their full ownership, entirely separate from the original
Teams. When you move a harness into your team, you keep ownership of it. Every team member who holds a seat can open and edit it, and the team owner can remove any harness from the team. Removing a harness from the team returns it to your sole control. See Teams for how this works
Embedding. When you make a harness public or embed it on another website, you grant Bundled Up Limited and everyone who views it a licence to display it for that purpose for as long as it stays public. Only make public or embed harnesses that you own or have permission to share
Local files. .harness files saved on your own device by the desktop application stay on your device and are yours. They are not uploaded to us unless you choose to upload them
AI assistants. An AI assistant or agent that you connect to your account, or that you use on your .harness files, acts on your behalf. Everything it does counts as done by you under these Terms, including any charges, plan limits, and the restrictions in section 10. Review what it changes
By using the Service, you grant Bundled Up Limited the right to access Your Content for support, debugging, technical analysis, and to investigate suspected breaches of these Terms
You are solely responsible for the legality, reliability, accuracy, and appropriateness of Your Content, and you must not upload content that infringes anyone else’s rights. You bear all risks associated with Your Content, including any consequences arising from the manufacture or physical installation of designs created using the Service

8. Parts Catalog

The Parts Catalog is a compilation of manufacturer part data, assembled, structured, and maintained by Bundled Up Limited.

Manufacturers’ material. Part numbers, specifications, datasheets, product images, and trade marks in the Catalog belong to the manufacturers they come from. Bundled Up Limited claims no ownership of them. Part images are not copied or hosted by us: the Service links to images on the manufacturer’s or distributor’s own servers, and an image may change or become unavailable at any time.

Our material. What belongs to Bundled Up Limited is the Catalog as a compilation: the selection of which parts to include, the research and verification behind each entry, the way part data is organised into our part types, fields, colour palette, and unit conventions, the cavity designation strategies and compatibility relationships we determine from manufacturer documentation, and the descriptions we write.

What you may do. You may use Catalog parts in your harnesses and part libraries, and include them in your bills of materials, PDFs, spreadsheets, .harness files, and other exports, for any purpose including commercial manufacture, without restriction and without attribution.

What you may not do. As a condition of your licence to use the Service, and whether or not any particular record in the Catalog is protected by copyright, you agree not to:

Copy, download, scrape, or extract the Catalog or any substantial part of it other than through ordinary use of the Service
Store, mirror, republish, redistribute, sell, or sublicense the Catalog or any substantial part of it
Use the Catalog to create, seed, train, or improve another parts database, catalog, or product

If you find a part that is missing or wrong, tell us from inside the Catalog and we will look at it.

9. The .harness File Format

The JSON Schema files for the .harness format are licensed under the MIT Licence, and the editing guide, format reference, and topic pages under the Creative Commons Attribution 4.0 International licence (CC BY 4.0). The full licence text is at docs.harness.design/files/harness/LICENSE.md. You may implement the .harness format in your own software, read and write .harness files, and build tools, importers, exporters, scripts, and agents around it, for any purpose, subject to those licences.

Those licences cover the Format Specification only. They do not grant any rights in the Software, the Content, the Parts Catalog, or the harness.design name and logos, and they do not permit you to present your product as harness.design or as endorsed by or affiliated with Bundled Up Limited. You may state factually that your software reads or writes .harness files.

10. What This Licence Does Not Cover

The licence in section 6 is deliberately broad: design whatever harnesses you like, for yourself, your employer, or your clients, and manufacture and sell what you design.

What it does not cover is taking the product itself. You may not:

a. Copy or reverse engineer the Software or Content

Copy, modify, adapt, or create derivative works of the Software or the Content; decompile, disassemble, reverse engineer, or otherwise attempt to derive the source code, structure, algorithms, data models, or non-public interfaces of the Software; or extract, unpack, or repackage the desktop application. This applies however the copying is done, including by using an AI model to reproduce the Software or the Content from screenshots, recordings, or documentation.

Where the law gives you a right to do any of this that cannot be excluded by contract, that right is unaffected, but you may exercise it only to the extent and for the purpose the law allows, and not for anything these Terms prohibit.

These restrictions are about copying our work. Asking an AI assistant to help you use harness.design, and writing software that works alongside it or reads and writes .harness files, are both fine.

b. Bulk-extract the Parts Catalog

Scrape, crawl, bulk-download, mirror, or otherwise systematically extract the Parts Catalog or a substantial part of it, or use it to seed another parts database.

Automated Access to your own harnesses is what the MCP server and .harness files are for; keep it within any rate limits we set.

c. Circumvent technical measures

Circumvent, disable, or interfere with plan and seat limits, licence and entitlement checks, authentication, the update mechanism, or any other technical measure that controls access to or use of the Service.

d. Attack the Service or other users

Disrupt the Service or the systems it runs on
Access or attempt to access any account, data, or part of the Service you are not authorised to use
Upload content that is unlawful or infringes someone else’s rights

e. Resell access to the Service

Resell or rent your access, provide the Service to people who do not hold their own account, or make it available through another product. Designing and manufacturing harnesses for your customers is not resale and is expressly allowed.

11. Cookies and Technical Requirements

The Service uses essential cookies only. These are required for authentication, maintaining user sessions, and core functionality. Disabling cookies in your browser may prevent the Service from functioning correctly.

12. Communications

By creating an account, you agree that we may send you marketing communications and product updates by email. You may unsubscribe at any time using the unsubscribe link included in any such email. Unsubscribing from marketing emails does not affect transactional emails related to your account or subscription.

13. Plans, Payment and Subscriptions

Plans

The Service is offered under two plans. The features and limits of each are described on the Plans page.

Free Plan: Available at no cost. Includes unlimited harnesses and parts, the Parts Catalog, local files, the formboard layout, and public link sharing. Limited to 100 connections per harness.
Pro Plan: $29 USD per seat per month when billed monthly, or $24 USD per seat per month when billed annually ($288 USD per seat per year). Provides unlimited connections, private email sharing, revisions, and teams.

Seats and teams

A Pro subscription includes the number of seats you choose at checkout. One seat covers you. Additional seats let you build a team and give each seated member full Pro access, including the ability to edit the team’s harnesses. You can change your seat count at any time from Manage subscription, and the difference is prorated automatically.

Discounts and sponsorships

Student discounts and student team sponsorships are offered on the terms described on their own pages: Student Discount and Student Team Sponsorship. We may withdraw a discount or sponsorship if its eligibility criteria are no longer met or if these Terms are breached.

Payment processing

Payments are processed by Stripe, Inc. By subscribing to the Pro Plan, you agree to Stripe’s terms of service and privacy policy. harness.design does not store your card details. Prices are in US dollars and exclude any taxes that apply to you, unless stated otherwise at checkout.

Billing

Pro Plan subscriptions renew automatically at the end of each billing period. You will be charged on the same date each month or year unless you cancel before renewal.

Cancellation

You may cancel your Pro Plan subscription at any time. Your plan will remain active until the end of your current billing period. After that, your account reverts to the Free Plan. No refunds are issued for unused time within a paid billing period.

Effect of downgrade

If your account reverts to the Free Plan, nothing is deleted. You keep all your harnesses and their data, but the paid features stop accepting new work:

Any harness exceeding 100 connections will no longer accept new connections until the total is reduced below the limit. You can still open and edit those harnesses
Revisions you have already created remain viewable and restorable, but you cannot create new ones
People you have already invited by email keep their access, and you can still revoke it, but you cannot send new invitations
Team collaboration pauses. You keep ownership and control of every harness, including any you moved into a team, but you cannot invite members or assign seats until you subscribe again

14. Plan Modifications and Pricing

Features and plan limits

Bundled Up Limited reserves the right to modify, add, or remove features, functionality, or limits associated with any plan at any time, including the Free Plan and the Pro Plan. The connection limit applicable to the Free Plan is an operational parameter of the Service and does not constitute a permanent entitlement. Connection limits and other plan parameters may be adjusted at our discretion.

Notice of changes to paid plans

Where a change would materially reduce the features or functionality available to Pro Plan subscribers, we will provide at least 30 days’ prior notice by email to the address associated with your account or by posting a prominent notice on the Service. Annual subscribers will not have plan features reduced before the start of their next annual renewal date, provided that notice of the change has been given.

Changes that affect only the Free Plan may be made with shorter notice or without prior notice.

Pricing changes

We may change the price of the Pro Plan by giving at least 30 days’ prior notice. Any price change will take effect at the start of your next billing cycle following the notice period. If you do not agree to a price change, you may cancel your subscription before the new price takes effect and you will not be charged at the updated rate.

No guarantee of plan continuity

We do not guarantee that any plan, feature set, pricing, or limit will remain unchanged indefinitely. Grandfathering of current plan terms for existing subscribers is not guaranteed. Continued use of the Service after changes take effect constitutes your acceptance of those changes.

15. Monitoring and Enforcement

We keep logs of how the Service is used, and we review them to keep it running well and to look into suspected breaches of these Terms.

Where we believe these Terms have been breached, we may suspend or terminate the account involved. Section 19 sets out how that works.

Because a breach of section 5, 8, 9, or 10 could cause harm that damages alone would not repair, we may also seek an injunction or other equitable relief to prevent or stop it.

16. Disclaimer of Warranties

To the maximum extent permitted by applicable law, the Service is provided on an “as is” and “as available” basis without warranties of any kind, whether express or implied. Bundled Up Limited expressly disclaims all implied warranties, including but not limited to warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement.

Bundled Up Limited does not warrant that the Service will be uninterrupted, error-free, or free from harmful components, that any designs produced using the Service are accurate or fit for any purpose, or that the Parts Catalog is complete, accurate, or up to date.

17. Limitation of Liability

To the maximum extent permitted by law, Bundled Up Limited (operating as harness.design) and its affiliates, directors, employees, and contractors are not liable for:

Any loss or damage arising from your use of the Service
Loss of designs, data, or functionality
Any indirect, incidental, special, consequential, or punitive damages
Personal injury or property damage arising from the use or installation of any design produced using the Service
Loss of revenue, profit, or business opportunity

This limitation applies regardless of the theory of liability and even if Bundled Up Limited has been advised of the possibility of such damages.

If you use the Service for business purposes, you agree that the Consumer Guarantees Act 1993 does not apply to the Service and that it is fair and reasonable for you and Bundled Up Limited to be bound by this section. Nothing in these Terms limits any right you have under consumer protection law that cannot be excluded by agreement.

18. Indemnification

You agree to defend, indemnify, and hold harmless Bundled Up Limited and its directors, employees, and contractors from and against any claims, liabilities, damages, losses, and expenses (including reasonable legal costs) arising out of or in connection with:

Your use of the Service
Your designs or content
Your violation of these Terms, including any breach of section 5, 8, 9, or 10
Anything done on your account by an AI assistant, agent, or other tool you have connected to it
The manufacture, installation, or use of any physical harness produced based on designs created using the Service

19. Termination

For breach

We may suspend or terminate your account, and any team seats attached to it, immediately and without notice if we reasonably believe you have breached section 5, 8, 9, or 10. For other breaches, we will normally tell you and give you a reasonable opportunity to put things right, where that is possible, before terminating.

Otherwise

You may stop using the Service at any time and request deletion of your account by email. We may close your account, or stop providing the Service, for reasons other than breach by giving you reasonable notice.

Effect of termination

When your account ends, your licence under section 6 ends, you must stop using the desktop application and delete your copies of it, and we may delete your account data in accordance with the Privacy Policy. Before your data is deleted you may export Your Content as .harness files.

Survival

Sections 5, 8, 9, 10, 15, 16, 17, 18, 20, and 22, and any other provision that by its nature should continue, survive termination.

20. Governing Law

These Terms are governed by the laws of New Zealand. The courts of New Zealand have exclusive jurisdiction over any dispute arising out of or relating to these Terms or the Service, except that Bundled Up Limited may seek injunctive or other relief to protect its intellectual property rights, or enforce a judgment, in any court that has jurisdiction over you or your assets.

21. Changes to Terms

We may update these Terms from time to time. We will notify you of material changes by email to the address associated with your account, or by a notice in the Service, at least 14 days before they take effect, and we may require you to accept the updated Terms to continue using the Service. The date at the top of this page shows when the Terms were last updated, and previous versions remain available from the link beside it. Continued use of the Service after updated Terms take effect constitutes your acceptance of them.

22. General

These Terms, together with the Privacy Policy and the plan, discount, and sponsorship terms they refer to, are the entire agreement between you and Bundled Up Limited about the Service
If any part of these Terms is found to be unenforceable, it will be applied to the fullest extent the law allows and the rest of the Terms remain in force
If we do not enforce a provision, that is not a waiver of our right to enforce it later
You may not assign or transfer these Terms. We may assign them to a successor to our business
We may give you notices by email to the address associated with your account

23. Contact

For questions or concerns regarding these Terms, contact
Email: support@harness.design