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SHOWCASE

Systems we built and run

6 systems, each with the core of its code summarised from the source that is running. The constants in the pseudocode are the constants in the code.

OPEN SOURCE · PUBLIC · R&D

The foundations we build in the open

Software written by AI is only trustworthy if the foundation under it can be checked. So we keep the foundation in the open: the architecture, the process and the agent's memory are all public for outsiders to read and pick apart.

HOW
Every foundation has to survive our own work first. A.D.D runs inside our POS and the Xăng Gate gateway, sdlc gates the company's repositories, memx holds the memory for our daily sessions. What cannot hold up here does not go near a client.
WHAT
Three things: an architecture method (A.D.D V3, MIT licensed), an anti-drift engine for the development lifecycle (sdlc), and a memory store for agents (memx).

abstractdriven.com · MIT

Abstract Driven Development V3

A fractal architecture so AI agents stop putting code in the wrong place

An open-source architecture method. Every module at every depth has the same five layers, so the dependency rules follow from the path.

  • Open source
  • MIT
  • llms.txt

F.A.P — fractal architecture pattern

sdlc · Rust zero-dep · bản phát hành riêng

sdlc · anti-drift advisory engine

Keeps an AI assistant on plan across dozens of turns

A zero-dependency Rust engine. It holds the development lifecycle state outside the model and closes hard at the commit gate.

  • Rust
  • Zero-dependency
  • Claude Code hooks
  • FSM
  • Sub-agent

Turbo v2 — làn 4 chặng do engine chốt, không để trợ lý tự nhớ

memx · Rust · kho XS3

memx · honest memory for agents

Better to lose a fact outright than to remember it wrong unnoticed

A memory store that keeps each fact as one subject · predicate · object edge. When it has to cut, a whole line drops instead of being rephrased into something false.

  • Rust
  • XS3
  • SQLite FTS5
  • MCP
  • Claude Code hooks
Read the detail— memx · honest memory for agentsInstalled software, no public demo.

Vì sao là cạnh chứ không phải ghi chú — mất an toàn thay vì mất âm thầm

AI INTEGRATION · SOLUTIONS

Systems that run inside real work

Businesses are not shopping for AI. They want to stop retyping every order, stop answering the same question two hundred times a day, stop opening the banking app to check whether the money arrived. We start where the work is stuck, then ask which part actually needs a language model. Usually that part is smaller than anyone expected.

HOW
These systems are built on the foundations from the other track, so they share one set of architectural rules and one way of being verified. Sensitive data such as cost prices, credit limits or bill-of-lading records runs on site or inside the client's own browser.
WHAT
Three systems in production: an internal shipment tracker for a logistics company, an API gateway paid by domestic transfer, and point-of-sale software for household businesses. Three different problems on one set of architectural rules.

lbs.com.vn · app nội bộ

LBS · Internal shipment tracking

28 Rust state machines running in the browser through WebAssembly

An internal shipment tracking app for LBS Global Logistics. Reading Excel, checking constraints and moving states all happen inside WebAssembly, on the staff member's own machine.

  • Rust
  • wasm-bindgen
  • calamine
  • Lit
  • AG Grid
Read the detail— LBS · Internal shipment trackingInstalled software, no public demo.

src/abstractions/states — 28 máy trạng thái thuần Rust

xanggate.rentaicoder.com

Xăng Gate

A Claude API gateway on local payments, two services split by RS256 JWT

A gateway that sells Claude API access to Vietnamese developers, paid by domestic bank transfer.

  • Lit 3
  • Vite
  • ASP.NET Core 10
  • Docker
  • JWT RS256

Tách dịch vụ, xác thực bằng khoá bất đối xứng

pos.rentaicoder.com · desktop + web

VDG POS Counter

A POS for lump-sum household businesses, with its scope written down

Point-of-sale software for household businesses on lump-sum tax. The legal constraints are written into the spec and the scope is stated in the documentation.

  • .NET 10
  • Avalonia 11
  • EF Core 10
  • SQLite WAL
  • Quartz.NET
  • ESC/POS

Ràng buộc pháp lý — ở đây quy định chính là đặc tả

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