[Welcome aboard]
Building scenes
[Scroll] to unfold
Agent Architecture · RAG Evaluation · LLM WorkflowsTool Calling · Local-first AI · AI Coding
Based in Shanghai, China/// Architecture background × AI engineeringKevin is an AI application engineer
[01] / 05 — AI Product · Browser Extension
[ Click to open ]
Deep in generative AI since 2023+5 shipped projects · merged OSS contributions
“Problem Before Model”
Solve the business problem first. Choose the model after.
Principles 01 / 05
“Workflow Before Agent”
If a workflow can solve it, it doesn't need an agent. Autonomy is a cost, not a feature.
Principles 02 / 05
“Evaluate Retrieval”
RAG is not a vector database with a prompt on top. Retrieval has to be measured.
Principles 03 / 05
“Evidence Matters”
Without enough evidence, the system should not pretend to know the answer.
Principles 04 / 05
“Demo Is Only the Beginning”
Production AI also needs: State · Evaluation · Testing · Error Handling · Privacy · UI · Delivery
Principles 05 / 05
[ keep scrolling ]
Repositories I maintain & merged upstream workNo forks, no vanity numbers
Thanks for visitingDevelopment & 3D design by Kevin
[ -- FPS ]/// 2026 © Kevin Liang. All 3D scenes, shaders, sound and core code are procedural — no external models or textures.The storytelling format is inspired by immersive portfolios; content and implementation are original.