Spec review
Definition
A structured review of a technical or functional specification by engineers and stakeholders before implementation begins — verifying that the spec is complete, unambiguous, technically feasible, and aligned with product requirements.
Spec review sits between PRD review (product alignment) and implementation. Where the PRD review asks 'are we building the right thing?', the spec review asks 'do we have enough detail to build it correctly?' A spec that passes review should be unambiguous enough that two engineers reading it independently would build the same thing.
What a complete spec includes:
- Functional requirements: what the system must do.
- Non-functional requirements: performance targets, availability, reliability, security.
- Data model: schema, relationships, access patterns.
- API contracts: endpoints, request/response shapes, error handling.
- Edge cases: what happens with invalid inputs, empty states, concurrent requests.
- Out of scope: explicit documentation of what this spec does not cover.
What spec review catches:
- Ambiguous requirements that different readers would interpret differently.
- Missing edge cases that will surface as bugs in production.
- Technical infeasibility — the spec assumes a capability the system doesn't have.
- Scope creep — requirements added informally that weren't in the PRD.
The whiteboard at spec review: Complex specs often need a whiteboard to make a sequence diagram, state machine, or data flow concrete. Snap those boards with BoardSnap to capture the visual clarifications that the written spec couldn't convey alone.
Examples
- A spec review catches that the authentication flow described in the spec doesn't account for the OAuth refresh token edge case — added before implementation begins.
- An engineer reviewing a spec finds that the proposed API contract would require a synchronous operation that could time out under load — flagged before a line of code is written.
- A team uses spec review as the gating step for any feature that crosses a service boundary, requiring sign-off from both service owners.
- A startup formalizes spec reviews after a sprint where two engineers built the same feature differently because the spec was ambiguous.
Snap a spec review. Ship its actions.
BoardSnap turns any whiteboard — including this one — into a summary and action plan.