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AI · November 5, 2025

Yansu, Serious Coding

We been helping mid-market companies for the past 1.5 years and finally ready to share the internal platform publicly. Yansu (严肃) is a AI coding platform that use spec + TDD to build complex software projects. It is more like a SOP than coding agent. We focus on understanding requirements and checking outcomes against those requirements while iterating the code based on the tests. Yansu tries to learn as much tribal knowledge as possible. These are things you don’t write down in google doc or Notion. Yansu absorbs these knowledge by continuously talking to users and distilling learning from…

Yansu, Serious Coding launched on November 5, 2025 with 6 votes, #2,995 of 9,796 launches that month and more than 75% of that year's launches.

What it does

Vibe coding is fun. Serious coding lasts. This is why we built Yansu, an AI-led coding platform guided by intent, validation and your team’s knowledge.

In the maker’s words, at launch

We been helping mid-market companies for the past 1.5 years and finally ready to share the internal platform publicly. Yansu (严肃) is a AI coding platform that use spec + TDD to build complex software projects. It is more like a SOP than coding agent. We focus on understanding requirements and checking outcomes…

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