Skill Claude CodeCodex
Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4)…
Skill Claude CodeCodex
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify…
Skill Claude CodeCodex
Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale.
Skill Claude CodeCodex
Presentation creation, editing, and analysis. When Claude needs to work with presentations (.pptx files) for: (1) Creating new presentations, (2) Modifying or editing content, (3) Working with layouts, (4) Adding comments or speaker notes, or any other presentation tasks.
Skill Claude CodeCodex
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
Skill Claude CodeCodex
This skill should be used when users want to create animated CLI demos, terminal recordings, or command-line demonstration GIFs. It supports both manual tape file creation and automated demo generation from command descriptions. Use when users mention creating demos, recording terminal sessions, or generating animated…
Skill Claude CodeCodex
A skill for creating Excalidraw presentations and diagrams. Excalidraw is a drawing tool for making visual explanations, such as process flows, architecture diagrams, and teaching materials.
Skill Claude CodeCodex
Converts documents to markdown (PDFs, Word docs, PowerPoint, Confluence exports) with Windows/WSL path handling. Activates when converting .doc/.docx/PDF/PPTX files to markdown, processing Confluence exports, handling Windows/WSL path conversions, or working with markitdown utility.
Skill Claude CodeCodex
Default web reading, AI search, and deep research tools. Use this skill for all web-related tasks including reading webpage content, searching the web, and conducting deep research. Replaces built-in websearch and webfetch tools.
Skill Claude CodeCodex
A collaborative planning method that turns an idea into a documented design and specification before implementation.
Skill Claude CodeCodex
A code debugging guide that diagnoses compile-time, runtime, and logic errors, then describes small fixes and checks the result with tests.
Skill Claude CodeCodex
A structured review of source code for quality, security, performance, error handling, tests, and common development practices.
Skill Claude CodeCodex
A technical documentation writing guide for code, APIs, and projects. An API is the defined way that software exposes functions or data to other software.
Skill Claude CodeCodex
A guide for solving Git version-control problems, including history changes, merge conflicts, lost commits, branches, submodules, and team workflows.
Skill Claude CodeCodex
A code and application performance analysis guide that looks for slow algorithms, database queries, web pages, and system operations.
Skill Claude CodeCodex
A Chinese-language guide for restructuring code to make it easier to maintain. It covers code smells, such as long functions or repeated code, and refactoring techniques that preserve behaviour.
Skill Claude CodeCodex
A security review of code, application settings, and dependencies for common weaknesses such as injection attacks, broken access controls, exposed secrets, and unsafe libraries.
Skill Claude CodeCodex
A four-stage method for debugging software: reproduce the problem, narrow down where it occurs, find the root cause, and verify a focused fix.
Skill Claude CodeCodex
A development method called test-driven development, or TDD, where you write a failing test, add the smallest code that passes it, and then improve the code while keeping the test passing.
Skill Claude CodeCodex
A tool that creates unit tests for individual functions, integration tests for cooperating components, and end-to-end tests for complete user flows.
Skill Claude CodeCodex
A format for breaking software work into small implementation tasks with exact files, code, and checks; TDD means writing tests before the code they verify.