Terms of Service

These Terms of Service ("Terms") are a contract between you and SYSTEMROOT SOLUÇÕES EM TECNOLOGIA LTDA ("SystemRoot", "we", "us"), a Brazilian company responsible for MestreObra, a construction management platform available at mestreobra.com.br and through WhatsApp.

By creating an account, accessing, or using MestreObra, you confirm that you have read, understood, and agree to these Terms and to our Privacy Policy. If you do not agree with any condition, do not use the platform.

If you use MestreObra on behalf of a company, you represent that you have the authority to accept these Terms on its behalf, and, in that case, "you" also refers to the company.

MestreObra is construction management software (SaaS). It helps you record and organize the day-to-day of your projects: construction logs, expenses and budgets, measurements and areas, material purchases, team check-ins and messages, reports, and a client portal.

The main channel is WhatsApp: you and the team members you invite talk to an artificial intelligence assistant that understands text, audio, photos, and videos, and turns those messages into organized records on the dashboard.

What MestreObra is not: we do not provide engineering, architecture, or construction services, and the platform does not replace a licensed technical professional. All technical, safety, execution, and compliance decisions for your projects are the exclusive responsibility of you and the licensed professionals involved.

To use MestreObra, you must be at least 18 years old and legally capable of entering into contracts.

The account is created and managed by the account owner, typically the person responsible for the company or the projects. The owner controls the subscription, the projects, and the account data.

The owner may invite team members by providing their name, phone number, and role. These members interact with the assistant through WhatsApp, without needing to create their own login.

By registering team members' phone numbers, the owner represents that they have authorization (or another valid legal basis) to provide that data and for those people to receive messages from MestreObra. It is the owner's responsibility to inform the team about this use.

You are responsible for keeping your credentials confidential and for everything done with your account.

Messages sent to MestreObra via WhatsApp are processed by artificial intelligence: audio is transcribed, photos and videos are analyzed, and the content is converted into records, expenses, construction logs, measurements, purchases, and messages.

AI is a powerful tool, but it is not infallible. It may misinterpret an amount, a name, or a measurement. Review important records on the dashboard, especially financial amounts, measurements, and purchase requests, before making decisions based on them.

You can correct or delete records created by the assistant at any time from the dashboard.

WhatsApp is a third-party service (Meta), operated through an API gateway. Failures, blocks, or outages of WhatsApp are beyond our control, although we work to restore the service as quickly as possible.

MestreObra must be used to manage your construction projects, lawfully and in good faith. By using the platform, you agree not to:

• violate laws or third-party rights, including intellectual property and privacy;
• send unlawful, offensive, discriminatory content, or content unrelated to managing your projects;
• register people's phone numbers without authorization or use the platform to send spam;
• attempt to access other users' accounts, data, or systems;
• copy, resell, sublicense, or reverse engineer the software;
• use the platform in a way that harms its stability or security, including abusive automation.

Accounts that violate these rules may be suspended or terminated, as described in the Termination section.

Free trial: every new account starts with a 15-day free trial, no credit card required.

Plan: after the trial, the MestreObra Pro plan costs R$ 49.00 (Brazilian reais) per month. Payment is made by credit card, processed by Stripe, with automatic monthly renewal.

Trial ends without a subscription: if the trial period ends and you do not subscribe, access is paused, but your data is not deleted. When you subscribe, you pick up right where you left off.

Cancellation: you can cancel at any time from your account settings. Access remains active until the end of the period already paid, and there are no further charges after that.

Price changes: we may adjust the plan price with at least 30 days' prior notice. The new price applies only to charges after the notice.

The data you and your team put into the platform, messages, audio, photos, videos, expenses, measurements, logs, and reports, belongs to you. MestreObra claims no ownership over your content.

To operate the service, you grant us a limited, non-exclusive, revocable license to store, process (including with AI), display, and back up that content, only to the extent necessary to provide the service.

The software, the MestreObra brand, the design, and all platform materials are owned by or licensed to us. These Terms do not transfer any intellectual property rights to you beyond the right to use the service.

Suggestions and feedback you send may be used to improve the product, with no obligation of compensation.

MestreObra is an organization and communication tool. We assume no technical responsibility for the construction projects managed on the platform, including construction quality, site safety, compliance with technical standards, deadlines, or outcomes.

The service is provided "as is", with commercially reasonable efforts to keep it available and secure. We do not guarantee uninterrupted or error-free operation, in part because we depend on third-party services, WhatsApp, cloud providers, payment processors, and AI providers.

To the maximum extent permitted by law, our total liability for any damages related to the service is limited to the amount you actually paid to MestreObra in the 12 months preceding the event that gave rise to the claim.

Nothing in these Terms excludes or limits liabilities that cannot be excluded or limited under Brazilian law, including consumer protection rules (Código de Defesa do Consumidor), where applicable.

You may close your account at any time, from your settings or by contacting support.

We may suspend or terminate your account in case of violation of these Terms, fraudulent use, prolonged non-payment, or legal requirement, notifying you in advance whenever possible.

After termination, your data is handled as described in the Privacy Policy, including your right to request deletion.

We may update these Terms to reflect changes in the product, the business, or the law. The current version will always be published on this page, with the effective date at the top.

Significant changes will be communicated with reasonable advance notice, through the platform, WhatsApp, or email. If you continue using MestreObra after the new version takes effect, we will understand that you have agreed to it.

These Terms are governed by the laws of the Federative Republic of Brazil.

The courts of the judicial district of Goiânia, Goiás, Brazil, are elected to resolve any dispute arising from these Terms, without prejudice to legal provisions that guarantee you a different venue, such as consumer protection rules.

Questions about these Terms? Get in touch: