Skill Claude CodeCodex
Safe file management inside configured directories — list, search (by name and content), read, write, append, edit, move, and soft-delete files. Use whenever the user wants to work with files or folders ("save this to a file", "what's in that directory", "find the note about X", "add this to my journal"…
Skill Claude CodeCodex
Create Mermaid diagrams directly in the chat — flowcharts, sequence diagrams, class diagrams, ER diagrams, Gantt charts, state diagrams, mindmaps, pie charts, git graphs, kanban boards, timelines and more. The code is rendered as a diagram in the chat. Activate whenever the user wants a diagram, a graphic, a…
Skill Claude CodeCodex
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.