Store architecture diagrams in Git alongside your code. Same repo, same branches, same review process. Mermaid & PlantUML — AI-generated and version-controlled.
your-project/
├── src/
├── tests/
├── docs/
│ └── architecture/
│ ├── system-context.mmd # C4 Level 1
│ ├── containers.mmd # C4 Level 2
│ ├── api-components.puml # C4 Level 3
│ ├── auth-sequence.mmd # Auth flow
│ ├── data-flow.mmd # Data pipeline
│ └── deployment.puml # Infrastructure
├── README.md
└── .github/
└── workflows/
└── render-diagrams.yml # CI renderingBranch, commit, push, PR, merge. No new tools or processes to learn.
See exactly what changed in the architecture: new services, removed connections, renamed components.
Architecture docs live next to the code they describe. No sync drift.
GitHub Actions renders diagrams on every push. Always up-to-date visuals.
CODEOWNERS rules for architecture files. Architects review diagram changes.
Git blame shows who changed the architecture and when. Full accountability.
Free to start. 50 AI credits/month. No credit card required.
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