MCP Development
coollabsio/coolify
A skill your agent uses for Laravel MCP development. An agent skill from coollabsio/coolify.
Agent D4 - Measurement Instrument Developer - Scale construction and psychometric validation.
Custom licenceAuto-check passed
Install D4
$ npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill d4 -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills d4 --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/25-HosungYou-Diverga/skills/d4 .claude/skills/d4 && 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 "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .claude/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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/25-HosungYou-Diverga/skills/d4Type 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 d4 -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills d4 --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/25-HosungYou-Diverga/skills/d4 .agents/skills/d4 && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .agents/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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 d4 -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills d4 --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/25-HosungYou-Diverga/skills/d4 .cursor/skills/d4 && 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 "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .cursor/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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/25-HosungYou-Diverga/skills/d4--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 d4 -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install brycewang-stanford/Auto-Empirical-Research-Skills d4 --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/25-HosungYou-Diverga/skills/d4 .gemini/skills/d4 && 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 "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .gemini/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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 d4Installs 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 d4 -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/25-HosungYou-Diverga/skills/d4 .github/skills/d4 && 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 "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .github/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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 d4 -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 d4 --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/25-HosungYou-Diverga/skills/d4 .opencode/skills/d4 && 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 "d4" agent skill from https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/tree/main/skills/25-HosungYou-Diverga/skills/d4 into .opencode/skills/d4/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "d4", 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
d4- GitHub stars
- 4.5k
- Token cost
- ~7.6k tokens
- SKILL.md length
- 330 words
- Files
- 1
- Skills in repo
- 364
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Agent D4 - Measurement Instrument Developer - Scale construction and psychometric validation.
- Works in 4 steps: Survey Item Development → Scale Construction Process → Validity Evidence Framework → …
- SKILL.md covers ⛔ Prerequisites (v8.2 — MCP…, Core Mission, Capabilities and Response Templates, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
D4 is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Agent D4 - Measurement Instrument Developer - Scale construction and psychometric validation. Covers item development, validity evidence, and reliability testing for social science research.
Its SKILL.md is about 7.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
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…
Example prompts
- “/d4”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Survey Item Development
- Scale Construction Process
- Validity Evidence Framework
- Reliability Testing
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
No scripts in the folder and no shell commands in SKILL.md (its code samples are yaml and markdown).
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
D4 loads about 7.6k tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 330 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 330 words (~7,567 tokens).
“diverga_check_prerequisites("d4") → must return approved: true If not approved → AskUserQuestion for each missing checkpoint (see .claude/references/checkpoint-templates.md)”
- name
- d4
- version
- 12.0.1
Files
Just SKILL.md in skills/25-HosungYou-Diverga/skills/d4 of brycewang-stanford/Auto-Empirical-Research-Skills.
Open the folder on GitHubat commit 9fa87d8
Compare with similar skills
D4 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 |
|---|---|---|---|---|---|---|
| D4 this skillbrycewang-stanford/Auto-Empirical-Research-Skills | 4.5k | — | ~7.6k | Automated safety check: Pass | Custom licence | |
| MCP Developmentcoollabsio/coolify | 63k | 1 repos | ~949 | Automated safety check: Pass | MIT | |
| Game Developmentsickn33/agentic-awesome-skills | 47k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Twenty App Entity Developmenttwentyhq/twenty | 58k | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| Developmentccusage/ccusage | 19k | — | ~433 | Automated safety check: Pass | Custom licence | |
| Frontend DevelopmentOpenHands/OpenHands | 90k | — | ~324 | Automated safety check: Pass | MIT |
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Questions about D4
What does D4 do?
Agent D4 - Measurement Instrument Developer - Scale construction and psychometric validation. D4 is an agent skill from brycewang-stanford/Auto-Empirical-Research-Skills. Agent D4 - Measurement Instrument Developer - Scale construction and psychometric validation.
How do I install D4 in Claude Code?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill d4 -a claude-code`. Or copy the skill folder (skills/25-HosungYou-Diverga/skills/d4 in brycewang-stanford/Auto-Empirical-Research-Skills) into .claude/skills/d4 in your project. Claude Code loads it when a task matches its description.
How do I install D4 in Codex?
Run `npx skills add brycewang-stanford/Auto-Empirical-Research-Skills --skill d4 -a codex`. Or copy the skill folder (skills/25-HosungYou-Diverga/skills/d4 in brycewang-stanford/Auto-Empirical-Research-Skills) into .agents/skills/d4 in your project. Codex loads it when a task matches its description.
Can I use D4 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 d4 -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/d4, .gemini/skills/d4, .github/skills/d4 and .opencode/skills/d4 in your project.
What does D4 need to run?
SKILL.md names no scripts, command-line tools or credentials: D4 is instructions for the agent only.
Does D4 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 D4 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 D4 use?
D4 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 D4 use?
About 7.6k tokens (SKILL.md is roughly 30k 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 D4?
Skills that share tags, products or a category with D4: MCP Development (coollabsio/coolify, 63k stars), Game Development (sickn33/agentic-awesome-skills, 47k stars), Twenty App Entity Development (twentyhq/twenty, 58k stars) and Development (ccusage/ccusage, 19k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains D4?
brycewang-stanford (a GitHub user) maintains it in brycewang-stanford/Auto-Empirical-Research-Skills, which has 4,529 GitHub stars. The repository holds 364 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.