Explore skills

Write a new README.md or improve an existing one. Use when the user asks to create, update, or improve a README, or wants to document a project and no other documentation skill is more specific.

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.

Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations.

Operate the local Fitness Agent CLI for Strava and Obsidian workflows. Use when Codex needs to authenticate with Strava, list or fetch Strava activities, export workout data as Obsidian-compatible Markdown, configure a local Obsidian vault path, or write/sync workout notes into a vault from the local fitness-agent project.

Analyze Strava-derived fitness notes that already exist in an Obsidian vault, then generate deeper dashboards, proxy training-load metrics, trend reports, and visual summaries. Use when the user wants post-sync analysis of existing workout notes rather than fetching new data from Strava.

Create forward-looking training plans from Strava-derived fitness notes already stored in an Obsidian vault. Use when the user wants a realistic next-week or next-two-week plan generated from recent load, consistency, sport mix, and recovery signals in their existing notes.

Operate the local Fitness Agent CLI for Strava and Obsidian workflows. Use when Codex needs to authenticate with Strava, list or fetch Strava activities, export workout data as Obsidian-compatible Markdown, configure a local Obsidian vault path, or write/sync workout notes into a vault from the local fitness-agent project.

Analyze Strava-derived fitness notes that already exist in an Obsidian vault, then generate deeper dashboards, proxy training-load metrics, trend reports, and visual summaries. Use when the user wants post-sync analysis of existing workout notes rather than fetching new data from Strava.

Use when about to commit, create a PR, or declare work complete — after verification-before-completion confirms tests pass but before code ships. Catches security vulnerabilities, logic errors, and business rule bugs that slip through despite passing tests.

Deep fluency in modern Python (3.14+) for production systems. Use when writing Python code, designing APIs, building data pipelines, creating async services, or optimizing performance. Covers typing, tooling (uv/pyright/ruff), FastAPI, Polars, observability, and engineering judgment.

Use when facing a task too large to hold in one piece — decompose into atomic subtasks. Divide-and-conquer in chengyu form. Pairs naturally with subagent dispatch (each part becomes one subagent's job) and with the dispatching-parallel-agents superpower. The decomposition itself is the skill — the parts should each have one clear purpose and a well-defined interface to the others.