Self-hosted alternatives to pptx-slide-specification

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pptx-slide-specification

Authoring or repairing a coordinate-explicit JSON specification

pptx-slide-specification is an agent skill from the wshobson/agents collection for writing or repairing the coordinate-explicit JSON specification that describes an editable PowerPoint (PPTX) deck. In this approach the author gives the final position and size of every object, in inches, so no renderer has to decide where things go or shrink text after the fact. The specification has a required structure: a root with a summary and a list of slides, and each slide with a stable identifier, a title that states its message, a reading order for accessibility, and a complete layout tree. The layout tree declares the slide size, a root group, the groups and objects keyed by identifier, final bounding boxes, styles, stacking order and classifications. Every meaningful object needs its identifier, kind, role, classification, content, style, bounds and z-index. A production summary carries an explicit layout policy, including a safe margin, the lowest point for content, the top of the footer and a minimum gap between objects, along with accessibility metadata. The skill's authoring rules keep the specification consistent so that the quality checks in the companion skills can judge it. It is installed with the skills CLI from the wshobson/agents repository. Its skills.sh page showed about 2.3K installs and passing results from three security audits at the time of the scan.