GitHub Deep Research
bytedance/deer-flow
Researches a GitHub repository over four rounds using the GitHub API and web search, then writes a structured markdown report with timeline, metrics and Mermaid diagrams.
Agent skill
Pyfixest Reference
by brycewang-stanford in brycewang-stanford/Auto-Empirical-Research-Skills
Dense, machine-readable API reference for PyFixest — high-dimensional fixed-effects OLS/WLS/IV and Poisson (feols, fepois, feglm), clustered/robust standard errors, R-style formula syntax, and…
Install Pyfixest Reference
$ npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill pyfixest-reference -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills pyfixest-reference --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/40-py-econometrics-pyfixest .claude/skills/pyfixest-reference && 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 "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .claude/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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/40-py-econometrics-pyfixestType 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 pyfixest-reference -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills pyfixest-reference --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/40-py-econometrics-pyfixest .agents/skills/pyfixest-reference && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .agents/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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 pyfixest-reference -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills pyfixest-reference --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/40-py-econometrics-pyfixest .cursor/skills/pyfixest-reference && 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 "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .cursor/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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/40-py-econometrics-pyfixest--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 pyfixest-reference -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills pyfixest-reference --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/40-py-econometrics-pyfixest .gemini/skills/pyfixest-reference && 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 "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .gemini/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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 pyfixest-referenceInstalls 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 pyfixest-reference -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/40-py-econometrics-pyfixest .github/skills/pyfixest-reference && 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 "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .github/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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 pyfixest-reference -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 pyfixest-reference --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/40-py-econometrics-pyfixest .opencode/skills/pyfixest-reference && 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 "pyfixest-reference" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/40-py-econometrics-pyfixest into .opencode/skills/pyfixest-reference/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pyfixest-reference", 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
pyfixest-reference- GitHub stars
- 4.5k
- Token cost
- ~3k tokens
- SKILL.md length
- 176 words
- Files
- 2
- Skills in repo
- 369
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Dense, machine-readable API reference for PyFixest — high-dimensional fixed-effects OLS/WLS/IV and Poisson (feols, fepois, feglm), clustered/robust standard errors, R-style formula syntax, and…
- Debugging Python fixed-effects regressions with the pyfixest package
- SKILL.md covers Package Import, Core Estimation Functions, Formula Syntax and Post-Estimation Methods (Feols…, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Pyfixest Reference is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Dense, machine-readable API reference for PyFixest — high-dimensional fixed-effects OLS/WLS/IV and Poisson (feols, fepois, feglm), clustered/robust standard errors, R-style formula syntax, and post-estimation. Use when writing or debugging Python fixed-effects regressions with the pyfixest package.
Its SKILL.md is about 3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `README-original.md`).
It sits in Research & Science. It works with Python. 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
- Debugging Python fixed-effects regressions with the pyfixest package
Example prompts
- “/pyfixest-reference”
Requirements
- Python 3
- Pre-approved tools (allowed-tools): Read, Write, Edit, Bash
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 these tools, so the agent can use them without asking each time:
ReadWriteEditBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are 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
Pyfixest Reference loads about 3k tokens when it runs. Until then it costs about 80 tokens; SKILL.md has 176 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Write, Edit, Bash
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 176 words (~3,020 tokens).
“Returns Feols for single model, FixestMulti for multiple estimation syntax.”
- name
- pyfixest-reference
- allowed-tools
- Read, Write, Edit, Bash
Files
SKILL.md and 1 other file in skills/40-py-econometrics-pyfixest of brycewang-stanford/Auto-Empirical-Research-Skills.
- SKILL.md
- README-original.md
Open the folder on GitHubat commit 9fa87d8
Compare with similar skills
Pyfixest Reference 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 |
|---|---|---|---|---|---|---|
| Pyfixest Reference this skillbrycewang-stanford/Auto-Empirical-Research-Skills | 4.5k | — | ~3k | Automated safety check: Notes | Custom licence | |
| GitHub Deep Researchbytedance/deer-flow | 83k | 5 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Diagnosepedrohcgs/claude-code-my-workflow | 1.6k | — | ~4.2k | Automated safety check: Pass | MIT | |
| Light Project StructureLight0305/Light-skills | 640 | — | ~3k | Automated safety check: Notes | MIT | |
| Deep Research MCP Guidepminervini/deep-research-mcp | 112 | — | ~5.8k | Automated safety check: Pass | MIT | |
| Harbor Benchmarksmorluto/jacobian | 203 | — | ~690 | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Pyfixest Reference
What does Pyfixest Reference do?
Dense, machine-readable API reference for PyFixest — high-dimensional fixed-effects OLS/WLS/IV and Poisson (feols, fepois, feglm), clustered/robust standard errors, R-style formula syntax, and…. Pyfixest Reference is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Dense, machine-readable API reference for PyFixest — high-dimensional fixed-effects OLS/WLS/IV and Poisson (feols, fepois, feglm), clustered/robust standard errors, R-style formula syntax, and post-estimation.
When should I use Pyfixest Reference?
Pyfixest Reference fits situations like: debugging Python fixed-effects regressions with the pyfixest package.
How do I install Pyfixest Reference in Claude Code?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill pyfixest-reference -a claude-code`. Or copy the skill folder (skills/40-py-econometrics-pyfixest in brycewang-stanford/Auto-Empirical-Research-Skills) into .claude/skills/pyfixest-reference in your project. Claude Code loads it when a task matches its description.
How do I install Pyfixest Reference in Codex?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill pyfixest-reference -a codex`. Or copy the skill folder (skills/40-py-econometrics-pyfixest in brycewang-stanford/Auto-Empirical-Research-Skills) into .agents/skills/pyfixest-reference in your project. Codex loads it when a task matches its description.
Can I use Pyfixest Reference 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 pyfixest-reference -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pyfixest-reference, .gemini/skills/pyfixest-reference, .github/skills/pyfixest-reference and .opencode/skills/pyfixest-reference in your project.
What does Pyfixest Reference need to run?
SKILL.md names no scripts, command-line tools or credentials: Pyfixest Reference is instructions for the agent only. Our summary lists: Python 3. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash.
Does Pyfixest Reference 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 Pyfixest Reference safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Pyfixest Reference use?
Pyfixest Reference 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 Pyfixest Reference use?
About 3k tokens (SKILL.md is roughly 12k 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 Pyfixest Reference?
Skills that share tags, products or a category with Pyfixest Reference: GitHub Deep Research (bytedance/deer-flow, 83k stars), Diagnose (pedrohcgs/claude-code-my-workflow, 1.6k stars), Light Project Structure (Light0305/Light-skills, 640 stars) and Deep Research MCP Guide (pminervini/deep-research-mcp, 112 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Pyfixest Reference?
brycewang-stanford (a GitHub user) maintains it in brycewang-stanford/Auto-Empirical-Research-Skills, which has 4,517 GitHub stars. The repository holds 369 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.