Verified Spec-Driven Development (VSDD)

Verified Spec-Driven Development (VSDD)

The Fusion: VDD × TDD × SDD for AI-Native Engineering

Overview

Verified Spec-Driven Development (VSDD) is a unified software engineering methodology that fuses three proven paradigms into a single AI-orchestrated pipeline:

Spec-Driven Development (SDD): Define the contract before writing a single line of implementation. Specs are the source of truth.

Define the contract before writing a single line of implementation. Specs are the source of truth. Test-Driven Development (TDD): Tests are written before code. Red → Green → Refactor. No code exists without a failing test that demanded it.

Tests are written before code. Red → Green → Refactor. No code exists without a failing test that demanded it. Verification-Driven Development (VDD): Subject all surviving code to adversarial refinement until a hyper-critical reviewer is forced to hallucinate flaws.

VSDD treats these not as competing philosophies but as sequential gates in a single pipeline. Specs define what. Tests enforce how. Adversarial verification ensures nothing was missed. AI models orchestrate every phase, with the human developer serving as the strategic decision-maker and final authority.

I. The VSDD Toolchain

Role Entity Function The Architect Human Developer Strategic vision, domain expertise, acceptance authority. Signs off on specs, arbitrates disputes between Builder and Adversary. The Builder Claude (or similar) Spec authorship, test generation, code implementation, and refactoring. Operates under strict TDD constraints. The Tracker Chainlink Hierarchical issue decomposition — Epics → Issues → Sub-issues ("beads"). Every spec, test, and implementation maps to a bead. The Adversary Sarcasmotron (Gemini Gem or equivalent) Hyper-critical reviewer with zero patience. Reviews specs, tests, and implementation. Fresh context on every pass.

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