Stata
dylantmoore/stata-skill
Comprehensive Stata reference for writing correct .do files, data management, econometrics, causal inference, graphics, Mata programming, and 20 community packages (reghdfe, estout, did, rdrobust…
Name and classify p-hacking strategies, and quantify what each one does to the false-positive rate.
Install Phack Taxonomy
$ npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomy --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/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .claude/skills/phack-taxonomy && 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 "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .claude/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomyType 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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomy --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .agents/skills/phack-taxonomy && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .agents/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomy --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .cursor/skills/phack-taxonomy && 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 "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .cursor/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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/brycewang-stanford/Auto-Empirical-Research-Skills.git --path skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy--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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomy --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .gemini/skills/phack-taxonomy && 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 "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .gemini/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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 brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomyInstalls 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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .github/skills/phack-taxonomy && 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 "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .github/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills phack-taxonomy --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy .opencode/skills/phack-taxonomy && 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 "phack-taxonomy" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy into .opencode/skills/phack-taxonomy/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phack-taxonomy", 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
phack-taxonomy- GitHub stars
- 4.6k
- Token cost
- ~893 tokens
- SKILL.md length
- 331 words
- Files
- 1
- Skills in repo
- 383
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Name and classify p-hacking strategies, and quantify what each one does to the false-positive rate.
- Works in 4 steps: Which axis of the grid is this? Map it… → Was it fixed before the outcome was… → How many alternatives were available and… → …
- Asked what p-hacking is
- SKILL.md covers Quantifying a strategy, Using it to classify and What not to conclude
- Calls python
What it does
Phack Taxonomy is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Name and classify p-hacking strategies, and quantify what each one does to the false-positive rate. Covers the twelve-strategy compendium of Stefan and Schoenbrodt (2023), thirteen econometrics-specific degrees of freedom (clustering doctrine, fixed-effect structure, RDD bandwidth, kernel and inference mode, IV instrument sets and first-stage screening, staggered-DiD estimator and comparison-group choice, synthetic-control donor pools), the search procedures that turn a strategy into a session, and the two…
Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Research & Science, covering Econometrics and empirical research. The repository describes itself as: 🔬 A curated collection of 23,000+ agent skills for empirical research across 8 social science disciplines. | 精选 23,000+ AI Agent 技能库，覆盖8大社会科学学科的实证研究。CoPaper.AI…
When your agent uses it
- Asked what p-hacking is
- Which strategy a particular analytical choice corresponds to
- How much a given researcher degree of freedom inflates type I error
- Enumerate the ways a specific result could have been obtained
Example prompts
- “/phack-taxonomy”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Which axis of the grid is this? Map it to a numbered strategy.
- Was it fixed before the outcome was seen? A choice made ex ante is a
- How many alternatives were available and how many were tried? This is
- Is the alternative set disclosed? A disclosed search is a multiverse
What it can do on your machine
Read from SKILL.md and the folder at commit 9fa87d8. 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
Shell commands in SKILL.md call:
python
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
Phack Taxonomy loads about 893 tokens when it runs. Until then it costs about 244 tokens; SKILL.md has 331 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 331 words (~893 tokens).
“Read references/taxonomy.md. It is the substance of this skill: 27 strategies across three layers, each with what is chosen, why it is defensible, and what it costs in type I error — plus the procedure layer, because the false-positive rate…”
- name
- phack-taxonomy
Files
Just SKILL.md in skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy of brycewang-stanford/Auto-Empirical-Research-Skills.
Open the folder on GitHubat commit 9fa87d8
Compare with similar skills
Phack Taxonomy 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 |
|---|---|---|---|---|---|---|
| Phack Taxonomy this skillbrycewang-stanford/Auto-Empirical-Research-Skills | 4.6k | — | ~893 | Automated safety check: Pass | Custom licence | |
| Statadylantmoore/stata-skill | 291 | 1 repos | ~4.2k | Automated safety check: Pass | Custom licence | |
| Stata C Pluginsdylantmoore/stata-skill | 291 | 1 repos | ~5.8k | Automated safety check: Pass | Custom licence | |
| Example Datasetspymc-labs/CausalPy | 1.2k | — | ~587 | Automated safety check: Pass | Apache-2.0 | |
| Stata AuditSepineTam/mcp-for-stata | 264 | — | ~1.2k | Automated safety check: Pass | AGPL-3.0 | |
| Stata Skill Contributordylantmoore/stata-skill | 291 | 1 repos | ~2.4k | Automated safety check: Pass | Custom licence |
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Inspect, validate, summarize, and render local Stata-MCP audit evidence under .statamcp.
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Related
Categories
Questions about Phack Taxonomy
What does Phack Taxonomy do?
Name and classify p-hacking strategies, and quantify what each one does to the false-positive rate. Phack Taxonomy is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Name and classify p-hacking strategies, and quantify what each one does to the false-positive rate.
When should I use Phack Taxonomy?
Phack Taxonomy fits situations like: asked what p-hacking is; which strategy a particular analytical choice corresponds to; how much a given researcher degree of freedom inflates type I error; enumerate the ways a specific result could have been obtained.
How do I install Phack Taxonomy in Claude Code?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a claude-code`. Or copy the skill folder (skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy in brycewang-stanford/Auto-Empirical-Research-Skills) into .claude/skills/phack-taxonomy in your project. Claude Code loads it when a task matches its description.
How do I install Phack Taxonomy in Codex?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a codex`. Or copy the skill folder (skills/73-brycewang-p-hacking-skills/skills/01-phack-taxonomy in brycewang-stanford/Auto-Empirical-Research-Skills) into .agents/skills/phack-taxonomy in your project. Codex loads it when a task matches its description.
Can I use Phack Taxonomy 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 brycewang-stanford/Auto-Empirical-Research-Skills --skill phack-taxonomy -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/phack-taxonomy, .gemini/skills/phack-taxonomy, .github/skills/phack-taxonomy and .opencode/skills/phack-taxonomy in your project.
What does Phack Taxonomy need to run?
Going by SKILL.md and its folder, Phack Taxonomy needs the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Phack Taxonomy 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 Phack Taxonomy 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 Phack Taxonomy use?
Phack Taxonomy has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Phack Taxonomy use?
About 893 tokens (SKILL.md is roughly 3.6k 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 Phack Taxonomy?
Skills that share tags, products or a category with Phack Taxonomy: Stata (dylantmoore/stata-skill, 291 stars), Stata C Plugins (dylantmoore/stata-skill, 291 stars), Example Datasets (pymc-labs/CausalPy, 1.2k stars) and Stata Audit (SepineTam/mcp-for-stata, 264 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Phack Taxonomy?
brycewang-stanford (a GitHub user) maintains it in brycewang-stanford/Auto-Empirical-Research-Skills, which has 4,556 GitHub stars. The repository holds 383 skills in this directory. The repository was last updated on October 5, 2026.
Source: brycewang-stanford/Auto-Empirical-Research-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.