cross-review Live on npm
An MCP server that runs adversarial code review across 6 AI models (GPT, Claude, Gemini, DeepSeek, Grok, Perplexity) with unanimous-convergence gates, evidence custody and cost accounting.
Founder & Developer @ LCV Ideas & Software
Leonardo
Cardozo Vargas
Full-Stack & Edge Developer
A passionate developer from Brazil — building full-stack web, edge and desktop applications from idea to deployment. Shipping real products with test-driven, fail-closed engineering.
- AI models per review
- 0
- Products live
- 0
- Packages on npm
- 0
- GitHub followers
- 0
- Public repos
- 0
- Stars earned
- 0
live from the GitHub API on every visit
$ ls ~/work
What I Do
ultrabrain-mcp Live on npm
A structured deep-reasoning MCP server with branching, review and export — thinking as an auditable artifact.
Calculadora Android v1.0.0 on Google Play
The currency calculator rebuilt as a native Android app — Kotlin + Jetpack Compose
with Material 3, a pure-Kotlin calculation engine in :core:calc, Room cache and Hilt
injection. No tracking, no ads, no account; AGPL-3.0. The Astrólogo and Maestro Android editions
are started, with their Gradle projects opened.
Reflexos da Alma Live
A public blog PWA on Cloudflare — React 19, Workers, D1, Vertex AI chat and summaries, TipTap content pipeline.
Oráculo Financeiro Live
An inflation-indexed fixed-income dashboard — React, Workers, D1 and AI analysis over real market indexes.
Maestro Shipping
A desktop writing & orchestration studio in Tauri/Rust with deterministic engines — citations, link integrity, web evidence.
Payments in production Mercado Pago → Stripe
Checkout Transparente + Orders API with 3DS and HMAC-signed webhooks, operated daily; Stripe migration planned.
A fleet that deploys itself
Operating repositories with SHA-pinned actions, CodeQL, Zizmor and OpenSSF Scorecard — deploys only through CI. Practicing TDD with fail-closed design: RED before GREEN, gates that refuse to guess. Open to collaborate on Edge, MCP & Full-Stack projects.
$ cat stack.lock
Tech Stack & Expertise
languages
TypeScript
JavaScript
Rust
Python
SQL / SQLite
HTML5
CSS3
frontend
React 19
Vite- TipTap
- PWA / Workbox
- DOMPurify
edge & backend
CF Workers
CF Pages- Hono
Node.js- D1 (SQLite)
Tauri
mobile (android)
Kotlin
Android
Jetpack Compose- Gradle
- Material 3
- Hilt
- Room
- Retrofit / OkHttp
ai & mcp
- Model Context Protocol
- Vertex AI (Gemini)
- Claude
- GPT
- Grok
- DeepSeek
- Perplexity
payments & integrations
- Mercado Pago
- Stripe (planned)
- Resend
- Slack Integrations
- Linear
quality & security
- Vitest
- Zod
- Biome
- ESLint
- Prettier
- CodeQL
- Zizmor
- OpenSSF Scorecard
deployment & devops
- GitHub Actions
- Wrangler
- Dependabot
- SHA-pinned Actions
- npm Publishing
$ cat philosophy.txt
Dev Philosophy
1Fail closed: a gate that cannot verify must refuse, never guess
2RED before GREEN — the failing test is half the proof
3Every external action pinned to a full commit SHA, every dependency in a lockfile
4Nothing reaches production outside a pull request merged into main
5Six AI models argue over my code before it ships — unanimity or it doesn't merge
6Evidence over narrative: logs, SHAs and run IDs, or it didn't happen
7From idea to deployed edge worker is my favorite journey
$ git status --focus
Current Focus
cross-review
Live on npmTypeScript + MCP + 6 AI providers
Adversarial multi-model code review with unanimous-convergence gates, evidence custody, budget preflight.
ultrabrain-mcp
Live on npmTypeScript + MCP stdio server
Structured deep-reasoning sessions with branching, review and export.
Reflexos da Alma
LiveReact 19 + CF Workers + D1 + Vertex AI
Public blog PWA with AI chat, comments moderation, TipTap content pipeline.
Oráculo Financeiro
LiveReact + Workers + D1 + Vertex AI
Inflation-indexed fixed-income dashboard with AI analysis.
Maestro
ShippingTauri (Rust) + TypeScript
Desktop writing & orchestration studio — ABNT citations, link integrity, web evidence engines.
Sponsor Motor
Live → Stripe plannedCF Worker + Hono + Mercado Pago
Donation payments with 3DS, signed webhooks and operator CLI.
$ gh api /graphs --live
GitHub Analytics
Rendered live from my real activity — same tokyonight theme as everything else here.
lcv-leo (Leonardo Cardozo Vargas)
- 4 Followers on GitHub
- 1 Public Repos
- Joined GitHub March 2026
- contato@lcv.dev
$ open --with anything
Connect & Collaborate
Open to collaborate on Edge, MCP & Full-Stack projects.