Skill Claude CodeCodex
A lasting project knowledge base for research papers, ideas, experiments, and scientific claims, along with links between them. It keeps this information available for later work instead of treating each research session as separate.
Skill Codex
Theme-selection and theme-application workflow for slides, documents, reports, and lightweight HTML artifacts. Use when Codex should apply one of the bundled curated themes from themes/, show the theme showcase, or derive a new theme with coherent colors, fonts, contrast, and repeated visual motifs.
Skill Codex
Create or update a structured source map (Markdown + JSON) for any project directory. Use when Codex needs to (1) index an unfamiliar workspace before doing work in it, (2) refresh a stale source map after files are added, removed, or renamed, (3) prepare quick navigation context for a multi-turn task that touches…
Skill Codex
Spreadsheet workflow for .xlsx, .xlsm, .csv, and .tsv files. Use when Codex needs to create, inspect, repair, clean, reformat, or extend a spreadsheet; preserve workbook structure while editing an existing file; add formulas, charts, or sheets; or convert messy tabular data into a deliverable spreadsheet file.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: