CALMSuite
CalmStudio is a visual editor for architecture-as-code — part of the FINOS architecture-as-code project. Draw architecture diagrams on a canvas and get validated, machine-readable CALM (Common Architecture Language Model) JSON automatically.
Most architecture diagrams are static images: easy for humans to read, but impossible for tools to validate, CI pipelines to check, or AI assistants to generate. CALM fixes this with a JSON schema for describing systems, services, and their relationships as structured data. CalmStudio makes CALM visual.
What it does
- Draw visually — drag typed nodes onto a canvas, connect them with typed relationships, and nest services inside containers. Nine node types (Actor, System, Service, Database, and more) and five relationship types are supported out of the box.
- Get code automatically — every diagram change produces valid CALM JSON in real time, with a bidirectional sync between the canvas and a syntax-highlighted code panel.
- Import and export — open existing CALM JSON files, export as CALM JSON, SVG, or PNG, with ELK.js auto-layout for imported architectures.
- AI-native — an MCP server (
npx @calmstudio/mcp) gives Claude Code and other AI assistants 21 tools to create, validate, and export architectures from text descriptions.
Connection to CCC
Automated governance needs more than control catalogs — it needs to know what is being governed. CALM architectures can attach controls and metadata directly to nodes and relationships, bridging the gap between what your system looks like and what it must comply with.
As CCC catalogs define the controls, threats, and capabilities for cloud services, CalmStudio provides a way to model the architectures those controls apply to — producing artifacts that CI, evaluation tooling, and compliance pipelines can consume without manual translation.