LikeC4
Toolchain for your diagrams
FreeOpen SourceCLIFramework509 impressions#264 of its week
LikeC4 lets you define software architecture in a DSL and generates interactive diagrams from a single source of truth.
- for
- Developers and teams who want code-first architecture documentation.
- pricing
- open source
- license
- MIT
Key features
- DSL for Architecture — Write system components, relationships and boundaries using a clear, expressive domain-specific language.
- Instant Diagram Generation — Automatically render visual diagrams at multiple levels of detail from the DSL code.
- Interactive Views — Explore diagrams interactively with drill-down, zoom and navigation.
- Versioned & Git-Ready — Store models in Git, track changes and collaborate using familiar workflows.
- AI-Friendly Export — Expose architecture via MCP server or API for LLM agents without extra work.
- Embed Anywhere — Integrate diagrams via Vite plugin, React components or Web Components into docs and apps.
Use cases
- Document system architecture for onboarding new engineers
- Generate up-to-date diagrams for technical documentation
- Validate architectural changes and prevent drift before release
LikeC4 FAQ
How do I create a diagram?+
Write your architecture in the LikeC4 DSL, then run the CLI to generate static sites, React components, or serve locally.
Can I embed diagrams in my website?+
Yes, use the Vite plugin, React components or Web Components to embed interactive diagrams.
Is the architecture model versioned?+
Yes, models are plain code files that can be stored in Git for version control and collaboration.
Does LikeC4 work with AI tools?+
It provides an API and MCP server that expose the architecture model, making it easy for LLM agents to consume.
Is LikeC4 free to use?+
LikeC4 is open source and can be used without cost.
Summarized by DevHunt from likec4.dev · Oct 5, 2026. Details may change; check the official site.
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