Marketplace Sync Guard
Local-first, read-only auditing for CSV/XLSX exports. Built to reveal mismatches in SKU, stock, price, presence and status across ERP and marketplace data before they become operational problems.
Open productIndependent software lab Brazil
Build useful systems.
Prove them in the real world.
Lumen Anima Labs is the home for focused software products, automation infrastructure, QA systems and responsible security research built from concrete problems.
PRODUCTAUTOMATIONQASECURITYAPPLIED AI
LUMEN / SYSTEM MAPACTIVE
01 BUILD
02 VALIDATE
03 OPERATE
04 IMPROVE
01Focused scope
Small systems with a clear job instead of generic software for everyone.
02Operational proof
Real workflows, measurable behavior and testing before decoration.
03Responsible iteration
Ship, observe, fix the proven bottleneck and keep unnecessary complexity out.
Selected work
Systems that already
left the whiteboard.
Each project below was built around an operational problem and moved beyond a concept. Public products remain available; private systems are shown only at a high level.
QA + Security Bug Hunt Lab
A self-contained browser practice lab for evidence-first bug reporting, severity judgment, defensive security awareness, accessibility, responsive testing and truthful portfolio material.
Open QA LabPractical QA Guides
Evidence-first guides that end in a report, checklist, triage decision or test session instead of generic definitions.
Open guidesShopee Price Rescue
A price-cliff map for Shopee sellers that shows where charging more can reduce profit and the exact recovery price after each fee boundary.
Open free toolLumen Commander
Custom MCP infrastructure connecting ChatGPT to an authorized Windows machine through a private relay and self-healing local agent, with file, process and desktop interaction capabilities.
Core build completed. Now maintained through targeted improvements discovered in real use.
Palavra Rush
A fast browser word puzzle designed for short playable sessions, with progressive levels, scoring, streaks, responsive interaction and bilingual support.
Open public demoCapabilities
Engineering with
a verification mindset.
The lab works across product construction and technical validation. The common thread is simple: understand the system, make behavior observable and improve from evidence.
Product engineering
Browser extensions, focused web products and utilities with narrow, useful scopes.
Automation
Browser and Windows workflows, process orchestration, MCP tools and custom integrations.
Quality assurance
Functional testing, reproducible bug reports, data validation and evidence-driven verification.
Responsible security research
Web/API authorization, Broken Access Control, IDOR, role and permission boundaries — only within explicit authorized scope.
Applied AI
AI used as an execution and analysis layer inside practical systems, not as a novelty layer.
Operating method
Build less.
Learn faster.
- 01Find the real problem
Start from a workflow, failure mode or repeated cost that can be observed.
- 02Build the smallest useful system
Enough engineering to test the premise without weeks of decorative complexity.
- 03Validate with evidence
Use telemetry, tests, real users or real operating conditions whenever possible.
- 04Improve only what earns it
Fix proven bottlenecks and let working systems stay boring.
About the lab
Independent by design.
Lumen Anima Labs is the public home for software products and technical experiments created by Cesar Crispim in Brazil.
The work spans product engineering, automation, QA, applied AI and responsible security research. Projects can be public products, private operational tools or experiments — but they all have to solve a concrete problem before they earn more complexity.