Vyson Calc & Negócios: AI Tax & Legal Agents

Problem. Brazil has 5,570 municipalities and 27 states, each with its own tax rules, and the tax reform (Complementary Law 214/2025) runs until 2033. Companies must review prices and product catalogs, courts face a growing volume of retroactive calculations, and a single missing or wrong document can disqualify a multimillion tender. Users. Companies, accounting offices, law firms, court accounting teams, judicial experts and public-tender bidders. Solution. Vyson Calc & Negócios is a multi-agent platform with four engines: a tax module that audits invoices and ERP catalogs in batch (XML, PDF, CSV, Excel); a judicial engine that recalculates court cases in batch with control number, report and opinion; a pricing optimizer that protects the margin after the reform; and a tender automator that checks documents to reduce errors. AI on AMD. Files come in batch (up to 1,500 per ZIP) and are audited in parallel. Evolus document extractors and rule agents check the data in a fixed sequence. Gemma 4 (Google DeepMind), served on AMD GPU through the AMD Token Factory, writes each opinion in one call, with personal data masked before the call. A citation lock rejects laws or numbers not found in official sources. AI explains, the official table decides, the human signs. Measured (live test, Oct 17, 2026). Search across 1,533 official sources in 0.005 s; AI opinion in about 12 s; 7 of 7 sample invoices audited with opinion in 17 to 24 s. Validation. A tax review reduced a paying client's tax burden from 20.8% to 6.5% (-69%), within the law. Two public tenders won and awarded, totaling R$ 2.36 million. The founder was part of the Court of Justice of Alagoas team that returned 7,600 cases. Business. SaaS by volume, pay per batch on AMD, success fee on awarded tenders and a partner network. Demo: https://tatianabot-dashboard.vercel.app/fiscal