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Become a sponsor to Wagner Lacerda

@LacerdaTraderCode

Wagner Lacerda

LacerdaTraderCode
Rio Grande do Sul, Brazil

Hi, I'm Wagner 👋 — a Python engineer from Brazil with 12+ years in IT, building open-source tools for backend, data and AI.

What I maintain

  • 🧠 RAG Knowledge Assistant: RAG pipeline with cited, grounded answers
  • 🔌 Multi-Provider MCP Server: compare Claude, GPT and Gemini side by side
  • 🛡️ Security Scanner: SAST/SCA/DAST with AI-generated fix prompts
  • 🔧 FastAPI REST Boilerplate, 🕷️ Web Scraper Toolkit, 📊 Polars + DuckDB pipeline

Why sponsor

Sponsorship pays for the time to keep these projects updated and to build new open-source tools and solutions, all free for everyone.

What your support funds

  • Maintenance, bug fixes and dependency updates
  • New open-source projects and solutions in AI, backend, automation and security
  • Documentation, examples and free technical content on YouTube and Telegram

Thank you for considering it! 🙏

@LacerdaTraderCode

Reaching this goal will help me cover hosting and API costs for my open-source tools and free up more time to maintain them and build new ones. Thank you for any support! 🙏

Featured work

  1. LacerdaTraderCode/security-scanner

    Multi-platform security analysis platform (Web, Mobile, Desktop) with SAST, SCA, secrets scanning, active DAST, and automatic Claude fix-prompt generation.

    TypeScript
  2. LacerdaTraderCode/rag-knowledge-assistant

    End-to-end RAG pipeline: TF-IDF retrieval over chunked documents, grounded and cited answers from Claude, exposed via FastAPI.

    Python
  3. LacerdaTraderCode/mcp-multi-llm-server

    MCP server built on the official Python SDK that compares Claude, OpenAI and Gemini answers side by side, with a small provider-adapter layer.

    Python
  4. LacerdaTraderCode/data-pipeline-polars-duckdb

    Modern ETL pipeline with Polars and DuckDB: read CSV, JSON and Excel, transform, store as Parquet and run SQL analytics directly on Parquet files.

    Python
  5. LacerdaTraderCode/web-scraper-toolkit

    Web scraping toolkit with BeautifulSoup, Selenium and Playwright. Includes rate limiting, retries, User-Agent rotation and CSV, JSON and Parquet export with Polars.

    Python
  6. LacerdaTraderCode/fastapi-rest-boilerplate

    REST API template with FastAPI, JWT authentication, SQLAlchemy and CRUD endpoints. Linted and tested with GitHub Actions.

    Python

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$ a month

You'll receive any rewards listed in the $5 monthly tier. Additionally, a Public Sponsor achievement will be added to your profile.

$5 a month

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Sponsor badge on your GitHub profile, and my thanks for keeping my open-source projects alive. 🙏

$25 a month

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Everything in $5, plus your name or logo in the README of my main open-source projects.

$100 a month

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Everything in $25, plus your bug reports and issues get priority attention (faster responses, no guaranteed SLA).