bmad-architecture

bmad-architecture — “Produce the architecture: a lean spine of invariants … projected into whatever format the work needs.” The Solutioning workflow owned by bmad-architect, producing artifact-architecture (ARCHITECTURE-SPINE.md).

Its distinctive stance is a spine of invariants only — “a consistency contract that fixes only the invariants … the design paradigm, the boundary and dependency rules, how state is mutated, who owns shared data.” Everything structural (stack, tree, full data shape) is treated as “seed: true at cold-start, owned by the code once it exists.” That is BMAD’s just-in-time answer to over-specified up-front design.

See Also

• bmad — the framework.
• artifact-architecture — the spine document produced here.
• mp-codebase-design, addy-api-design, speckit-plan — the cross-framework design capabilities (see the design split candidate on stage-plan).
• bmad-check-implementation-readiness — gates this architecture (plus PRD/UX/epics) before code.
• stage-plan — the canonical stage.