What is Spec-Driven Development (SDD)?

SDD uses machine-readable specs as single truth. Generate BDD scenarios, TDD tests, then code. AI follows rails.

How does SDD differ from TDD or BDD?

SDD upstreams them—specs first, then behavior/tests/code. More holistic for AI agents.

Can SDD work on legacy codebases?

Yes, via Spec Anchor (core rules) and organic specs on changes only. No full rewrites needed.

Vibe Coding's Doom: Spec-Driven Development Takes Over AI Dev

What if your AI coder's 'vibes' are just a fast track to production meltdowns? Spec-Driven Development demands specs first, code second—saving devs from their own hype.

theAIcatchup Apr 10, 2026 3 min read

AI developer taming code chaos with spec documents versus vague prompts

⚡ Key Takeaways

Vibe coding breeds bugs; SDD enforces specs for reliable AI output. 𝕏
Reverse workflow: Specs > Plan > Tasks > Code, with human validation. 𝕏
Tools like GitHub SpecKit make SDD scalable for greenfield and brownfield projects. 𝕏

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theAIcatchup

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#AI Software Development #AI coding #SDD #TDD BDD #spec-driven development #vibe-coding

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