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Verified Spec-Driven Development (VSDD)

Verified Spec-Driven Development

gist.github.com

February 28, 2026

13 min read

Summary

Verified Spec-Driven Development (VSDD) integrates Spec-Driven Development, Test-Driven Development, and Verification-Driven Development into a single AI-orchestrated pipeline. This methodology emphasizes defining contracts before implementation, writing tests prior to code, and verifying code against specifications.

Key Takeaways

  • Verified Spec-Driven Development (VSDD) combines Spec-Driven Development, Test-Driven Development, and Verification-Driven Development into a single AI-orchestrated software engineering pipeline.
  • In VSDD, specifications define the functional contract, tests enforce implementation correctness, and adversarial verification ensures thorough scrutiny of the code.
  • The Builder generates formal specification documents that include behavioral contracts, interface definitions, edge case catalogs, and non-functional requirements before any code is implemented.
  • A Verification Strategy is produced to identify provable properties and architectural constraints, ensuring critical system properties are mathematically verifiable.

Community Sentiment

Mixed

Positives

  • Using LLMs as a software engineer has yielded the best results, emphasizing the importance of proper scoping and documentation in development.
  • The approach of iterating rapidly toward a working product remains valuable, especially with LLMs that can assist in exploring what works and what doesn't.

Concerns

  • Spec-driven development is fundamentally flawed for AI-first projects, as it assumes prior knowledge that may not exist, making it unreasonable.
  • Relying on LLMs for test generation can lead to issues, as they may not understand the implicit context required for effective testing.
Read original article

Source

gist.github.com

Published

February 28, 2026

Reading Time

13 minutes

Relevance Score

58/100

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