Code Design Rationale Investigator
cursor/plugins
Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
Create Chinese monospaced compass-style PDCA or CAPD problem-solving cards using East-West-South-North-Center layout, full-width and half-width spaces, diagonal Unicode arrows, and strict Chinese…
Install Pdca
$ npx skills add twhsi/skills --skill pdca -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install twhsi/skills pdca --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/pdca .claude/skills/pdca && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .claude/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/twhsi/skills/tree/main/skills/pdcaType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add twhsi/skills --skill pdca -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install twhsi/skills pdca --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/pdca .agents/skills/pdca && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .agents/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add twhsi/skills --skill pdca -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install twhsi/skills pdca --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/pdca .cursor/skills/pdca && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .cursor/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/twhsi/skills.git --path skills/pdca--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add twhsi/skills --skill pdca -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install twhsi/skills pdca --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/pdca .gemini/skills/pdca && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .gemini/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install twhsi/skills pdcaInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add twhsi/skills --skill pdca -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/pdca .github/skills/pdca && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .github/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add twhsi/skills --skill pdca -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install twhsi/skills pdca --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twhsi/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/pdca .opencode/skills/pdca && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "pdca" agent skill from https://github.com/twhsi/skills/tree/main/skills/pdca into .opencode/skills/pdca/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pdca", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
pdca- GitHub stars
- 259
- Token cost
- ~1.2k tokens
- SKILL.md length
- 458 words
- Files
- 2
- Skills in repo
- 18
- Repo updated
- First seen
- Licence
- None found
At a glance
Create Chinese monospaced compass-style PDCA or CAPD problem-solving cards using East-West-South-North-Center layout, full-width and half-width spaces, diagonal Unicode arrows, and strict Chinese…
- Works in 6 steps: Extract the center problem as a phrase… → Decide whether the loop is CAPD or PDCA… → Fill the four directions → …
- Codex needs to turn a problem
- SKILL.md covers Core Rules, Compass Mapping, Arrow Rules and Output Template, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Pdca is an agent skill from twhsi/skills. Create Chinese monospaced compass-style PDCA or CAPD problem-solving cards using East-West-South-North-Center layout, full-width and half-width spaces, diagonal Unicode arrows, and strict Chinese character limits. Use when Codex needs to turn a problem, incident, decision tradeoff, root-cause analysis, improvement cycle, or CAPD/PDCA workflow into a square text diagram, Hermes/Discord-ready card, or Chinese 方位九宮圖 with center ◎, north Plan, east Do, south Check, west Action, and four diagonal transition arrows.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Development, covering Root cause analysis. It works with Discord. The repository describes itself as: AI Agent Skills for Chinese Knowledge Workers: iMandalArt, FIRE, planning, and publishing workflows for Claude Code, Codex, and LLM agents.
When your agent uses it
- Codex needs to turn a problem
- Decision tradeoff
- Root-cause analysis
- Improvement cycle
Example prompts
- “/pdca”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Extract the center problem as a phrase of 8 Chinese characters or fewer.
- Decide whether the loop is CAPD or PDCA from the user's starting point.
- Fill the four directions
- Compress each phrase until it fits the requested width.
- Render a single text code block with full-width spacing and arrows.
- If helpful, add a brief note after the diagram listing the cycle order and any assumptions.
What it can do on your machine
Read from SKILL.md and the folder at commit 287d0f4. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Pdca loads about 1.2k tokens when it runs. Until then it costs about 130 tokens; SKILL.md has 458 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 458 words (~1,191 tokens).
“Use this skill to transform a problem into a Chinese text diagram shaped like a compass: North, East, South, West, four diagonal arrows, and a center ◎ core. The output should feel like a fixed-width visual card, not a prose…”
- name
- pdca
Files
SKILL.md and 1 other file in skills/pdca of twhsi/skills.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 287d0f4
Compare with similar skills
Pdca next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Pdca this skilltwhsi/skills | 259 | — | ~1.2k | Automated safety check: Pass | None | |
| Code Design Rationale Investigatorcursor/plugins | 10k | 9 repos | ~2.6k | Automated safety check: Pass | None | |
| OpenLogi macOS Permissions TriageAprilNEA/OpenLogi | 23k | — | ~2.5k | Automated safety check: Notes | Apache-2.0 | |
| Bug Finder for daisyUIsaadeghi/daisyui | 43k | — | ~2.3k | Automated safety check: Pass | MIT | |
| Root Cause Debugginggarrytan/gstack | 136k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Review PRapache/shardingsphere | 21k | — | ~6.4k | Automated safety check: Pass | Apache-2.0 |
Similar skills
- Official
OpenLogi macOS Permissions Triage
AprilNEA/OpenLogi
Decides whether an OpenLogi device problem on macOS is a privacy-permission (TCC) problem, using agent log lines, and says which identity needs which grant.
Bug Finder for daisyUI
saadeghi/daisyui
Investigates suspected bugs in the daisyUI monorepo through read-only analysis, then writes a decision-ready fix plan in tmp/bugs without changing any product code.
Root Cause Debugging
garrytan/gstack
Investigates bugs, errors and stack traces in phases and requires a root-cause hypothesis to be confirmed before any fix is written.
Review PR
apache/shardingsphere
Review Apache ShardingSphere or user-authorized downstream pull requests and PR discussions from public or authorized repository evidence.
Graph-Based Bug Tracing
tirth8205/code-review-graph
Traces a bug through a code knowledge graph, following callers, callees and execution flow before opening source files, within a small token budget.
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Related
Works with
Categories
Questions about Pdca
What does Pdca do?
Create Chinese monospaced compass-style PDCA or CAPD problem-solving cards using East-West-South-North-Center layout, full-width and half-width spaces, diagonal Unicode arrows, and strict Chinese…. Pdca is an agent skill from twhsi/skills. Create Chinese monospaced compass-style PDCA or CAPD problem-solving cards using East-West-South-North-Center layout, full-width and half-width spaces, diagonal Unicode arrows, and strict Chinese character limits.
When should I use Pdca?
Pdca fits situations like: Codex needs to turn a problem; decision tradeoff; root-cause analysis; improvement cycle.
How do I install Pdca in Claude Code?
Run `npx skills add twhsi/skills --skill pdca -a claude-code`. Or copy the skill folder (skills/pdca in twhsi/skills) into .claude/skills/pdca in your project. Claude Code loads it when a task matches its description.
How do I install Pdca in Codex?
Run `npx skills add twhsi/skills --skill pdca -a codex`. Or copy the skill folder (skills/pdca in twhsi/skills) into .agents/skills/pdca in your project. Codex loads it when a task matches its description.
Can I use Pdca in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add twhsi/skills --skill pdca -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pdca, .gemini/skills/pdca, .github/skills/pdca and .opencode/skills/pdca in your project.
What does Pdca need to run?
SKILL.md names no scripts, command-line tools or credentials: Pdca is instructions for the agent only.
Does Pdca access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Pdca safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Pdca use?
No licence was found for Pdca or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Pdca use?
About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Pdca?
Skills that share tags, products or a category with Pdca: Code Design Rationale Investigator (cursor/plugins, 10k stars), OpenLogi macOS Permissions Triage (AprilNEA/OpenLogi, 23k stars), Bug Finder for daisyUI (saadeghi/daisyui, 43k stars) and Root Cause Debugging (garrytan/gstack, 136k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Pdca?
twhsi (a GitHub user) maintains it in twhsi/skills, which has 259 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on July 21, 2026.
Source: twhsi/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.