Coder Radio 640: The Modern .Net Shows' Jamie Taylor
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Jan 29, 2026 
Jamie Taylor, a Microsoft MVP and open-source maintainer, built SpecKit to drive LLM-assisted development. He explains spec→plan→implement workflows, using constitutions to enforce project rules, onboarding brownfield repos, and applying OWASP security headers in ASP.NET Core. He also discusses multi-model support, task-driven TDD with agents, and practical limits like context windows and licensing.
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Keep Specs In Source Control
- SpecKit keeps specifications in the codebase so you can version and track design decisions alongside code.
- This flips the traditional workflow by treating the spec as source and collaborating with an LLM to evolve it.
Create A Project Constitution First
- Initialize SpecKit in a project and create a "constitution" that defines coding standards and constraints before coding starts.
- Have the LLM consult that constitution so generated code follows your project's rules and security practices.
Use A Spec→Plan→Task Funnel
- SpecKit funnels work: spec (what), plan (how), then tasks (implement), aligning the LLM with roles at each stage.
- This staged approach reduces ambiguity and improves LLM output compared to asking it to "build it" outright.