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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.

CONTENTS

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
Read the detail— Xăng GateVisit product— Xăng Gate (opens in a new tab)

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
Read the detail— VDG POS CounterVisit product— VDG POS Counter (opens in a new tab)

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

See both tracks on one page

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Tell us the scope and the constraints around it. We answer with an approach, a schedule and a price.

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