Tools: Powerful Verified Spec-driven Development (vsdd)

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

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.

Nothing gets built until the contract is airtight — and the architecture is verification-ready by design.

The human developer describes the feature intent to the Builder. The Builder then produces a formal specification document for each unit of work. Critically, this phase doesn't just define what the software does — it defines what must be provable about it and structures the architecture accordingly.

Before any implementation design is finalized, the Builder produces a Verification Strategy that answers: "What properties of this system must be mathematically provable, and what architectural constraints does that impose?"

Why this must happen in Phase 1: If the system is designed with side effects woven through the core logic, no amount of Phase 5 heroics will make it verifiable. A function that reads from a database, performs a calculation, and writes to a log in one block cannot be formally verified without mocking infrastructure that the verifier may not support. But a function that takes data in, returns a result, and lets the caller handle persistence — that's a function a model checker can reason about. This boundary must be drawn at the spec level because it fundamentally shapes the module decomposition, the dependency graph, and the testing strategy that follows.

The complete spec — behavioral contracts and verification architecture — is reviewed by both the human and the Adversary before any tests are written. Sarcasmotron tears into the spec looking for:

The spec is iterated until the Adversary can't find legitimate holes in either the behavioral contract or the verification strategy.

Chainlink Integration: Each spec maps to a Chainlink Issue. Sub-issues are generated for each behavioral contract item, edge case, non-functional requirement, and each formally provable property. The provable properties get their own bead chain so their status is tracked independently from test coverage.

With an airtight spec in hand, the Builder now writes tests — and only tests. No implementation

Source: HackerNews