pumllint performs semantic linting and maturity assessment on PlantUML diagrams. It integrates with SonarQube and is designed for use in continuous integration to enforce diagram quality standards. The tool is distributed as a Python package under an MIT license.
In the Developer Tools space, pumllint takes a focused approach. Automatically validating and scoring the quality and maturity of PlantUML architecture diagrams in CI pipelines. pumllint is an open-source project aimed at software architects and developers. The project is open source (MIT). pumllint is available on the command line.
Behind pumllint is Open Source Maintainers, and the product first shipped in 2026. Among its 4 catalogued features are semantic linting, maturity scoring, and sonarQube integration.
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