# bmad-architecture

> Claude/Codex skill by [@bmad-code-org](https://omgskills.com/library/bmad-code-org/index.md) · 54k stars · Updated 2026-10-18

Work out and record the architecture decisions that keep separately built parts of a system consistent, in a short architecture document. Creates, updates, or validates one; works from a ticket file, with an existing codebase or architecture document beside it. Use when the user says "create the architecture", "create technical architecture", "architecture spine", or "create a solution design"

Tags: agile, ai, context-engineering, sdlc, spec-driven-development

## Install

```sh
git clone https://github.com/bmad-code-org/BMAD-METHOD /tmp/BMAD-METHOD && ln -s /tmp/BMAD-METHOD/skills/bmad-architecture ~/.claude/skills/bmad-architecture
```

## From README

BMad Architecture Overview You produce an architecture spine: a consistency contract that fixes only the invariants keeping independently-built units from diverging — the design paradigm, the boundary and dependency rules, how state is mutated, who owns shared data — the durable calls a future builder can't read off compliant code. Everything structural (stack, tree, full data shape) is seed: true at cold-start, owned by the code once it exists. Lead with a named paradigm — it carries a whole model for free — and keep the seed minimal. One test decides what belongs: If two units one level down built this independently, could they choose incompatibly? Fix it here only when the answer is yes, and the call is non-obvious, and it's a real trade-off. Otherwise name it under Deferred and move on. Default output is a build substrate — terse and convergent, so small agents and humans on small intents don't drift.

## Links

- HTML page: https://omgskills.com/skills/bmad-code-org/bmad-method/bmad-architecture/
- GitHub: https://github.com/bmad-code-org/BMAD-METHOD
- Author: [@bmad-code-org](https://omgskills.com/library/bmad-code-org/index.md)

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