msd-core/get-shit-done/references/mvp-concepts.md

MVP Concepts — index

Cross-reference for the six MVP-related reference files. Each file has a single, narrow purpose. This index exists so future readers (and agents resolving @-refs) can find the right file without grepping the directory.

Canonical domain terms for the concepts named below live in CONTEXT.md under "Domain terms" — start there if you need a precise definition.

File map

File	Purpose	Loaded by
references/planner-mvp-mode.md	Rules. Vertical-slice planning rules, slice ordering, Walking Skeleton constraints.	gsd-planner agent when MVP_MODE=true
references/skeleton-template.md	Template. Shape of SKELETON.md for new-project Phase 1 under --mvp.	gsd-planner agent when the Walking Skeleton gate fires
references/user-story-template.md	Template. Format and slot definitions for As a / I want to / So that.	gsd-mvp-phase workflow during interactive prompting; gsd-planner when emitting the ## Phase Goal header
references/spidr-splitting.md	Splitting discipline. Five-axis decomposition (Spike, Paths, Interfaces, Data, Rules) for stories too large for one phase.	gsd-mvp-phase workflow when the user story exceeds size threshold
references/execute-mvp-tdd.md	Gate. MVP+TDD runtime gate semantics: when it fires, what it checks, halt-and-report protocol, end-of-phase blocking escalation, Behavior-Adding Task definition.	gsd-executor agent when MVP_MODE=true && TDD_MODE=true
references/verify-mvp-mode.md	UAT framing. Three-section UAT structure (user-flow → technical → coverage), anti-patterns, User Flow Coverage section in VERIFICATION.md.	gsd-verifier agent when the phase under verification has mode: mvp

Concept-to-file map

If you're looking for the canonical statement of a concept, this is where to find it:

• MVP Mode resolution chain — workflows/plan-phase.md Step 1 (CLI flag → roadmap → config → false). Mirrored in execute-phase.md and verify-work.md.
• **Mode:** mvp parser — get-shit-done/bin/lib/roadmap.cjs (searchPhaseInContent + cmdRoadmapAnalyze). Workflows compare against the parser output, never re-parse.
• User Story regex — /^As a .+, I want to .+, so that .+\.$/ — applied at runtime by gsd-verifier (the user-story-format guard) and gsd-mvp-phase (interactive validation).
• Behavior-Adding Task predicate — references/execute-mvp-tdd.md (the canonical three-check definition). Applied at runtime by gsd-executor.
• Walking Skeleton gate condition — workflows/plan-phase.md (Phase 1 + new project + --mvp + no prior summaries → emit SKELETON.md).
• MVP+TDD Gate (RED→GREEN enforcement) — references/execute-mvp-tdd.md.
• MVP-mode UAT framing (user-flow first, technical deferred) — references/verify-mvp-mode.md.
• Per-phase mode authoring — workflows/mvp-phase.md (writes **Mode:** mvp to ROADMAP.md after collecting the user story).
• Project-wide mode prompt at init — workflows/new-project.md (Vertical MVP vs Horizontal Layers question).

Interactions worth knowing

• --mvp and --prd <file> together on Phase 1. Both paths converge at the planner spawn. The PRD express path creates CONTEXT.md from the PRD file and continues to the research step; the Walking Skeleton gate fires independently when Phase 1 + new project + --mvp. The planner therefore receives both WALKING_SKELETON=true and PRD-derived context. This is intentional: the PRD informs what the skeleton should prove.
• MVP_MODE is all-or-nothing per phase, not per task. A phase is either MVP-mode or standard. Mixed-mode phases are not supported (PRD #2826 Q1).
• TDD_MODE is independent of MVP_MODE. TDD can be on without MVP, MVP can be on without TDD. Only the intersection (both true) activates the MVP+TDD Gate.
• The gsd-roadmapper agent makes the MVP/standard decision once at project init based on PROJECT_MODE. Per-phase opt-in/out happens later via /gsd:mvp-phase or /gsd-edit-phase.

Tests

Structural contract tests for each integration site live under tests/:

• plan-phase-mvp-flag.test.cjs — plan-phase MVP_MODE resolution chain
• planner-mvp-mode.test.cjs — gsd-planner agent MVP section
• mvp-phase-command.test.cjs, mvp-phase-integration.test.cjs, mvp-phase-spidr.test.cjs — /gsd:mvp-phase
• execute-mvp-tdd-gate.test.cjs, executor-mvp-tdd-section.test.cjs — MVP+TDD Gate
• verifier-mvp-section.test.cjs, verify-mvp-uat.test.cjs — verifier UAT framing
• new-project-mvp-prompt.test.cjs — mode prompt at init
• progress-mvp-display.test.cjs, stats-mvp-display.test.cjs, graphify-mvp-viz.test.cjs — discovery surfaces