PTEN
Proprietary product, language and AI

Humanizador PT-BR

An MCP server integrated with ChatGPT that detects and rewrites AI markers in Brazilian Portuguese. It is calibrated against real PT-BR writing patterns, not criteria imported from English.

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Project summary

Role

Linguistic curation, product, and implementation

Audience

Creators, content teams, and AI users writing in PT-BR

Tools

MCP, TypeScript, Zod, Claude, Bedrock, AWS

Outcome

Distributable tool to detect and rewrite AI markers

Context

A proprietary tool for reviewing AI-generated text in Brazilian Portuguese.

Business problem

Many people use AI to write, but the output often still reads as machine-generated. In PT-BR this shows up in very specific ways, and generic tools don't catch it properly.

Audience & personas

  • Content professionals
  • Consultants and creators who use AI for drafts
  • Teams that need to maintain brand voice in Portuguese

Adoption barriers

  • Highly subjective review criteria
  • Confusion between formal text and artificial text
  • Few references calibrated for Brazilian Portuguese

Solution design

  • Skill with versioned editorial rules
  • MCP server with separate tools for detection and rewriting
  • Review guided by register, meaning, and intent

Assets created

  • Guide to AI patterns in PT-BR
  • MCP tool for ChatGPT
  • Infrastructure with authentication, rate limiting, logs, and tests

Metrics & signals

  • 30 linguistic patterns documented
  • 2 usage modes: detection and rewriting
  • Serverless deployment on AWS

Lessons learned

The best review doesn't try to 'beautify' the text. It removes the artificial and lets the intent come through.

Next improvements

Create presets by register: corporate, technical, social, editorial, and academic.