Jedpsych Theory And Hypotheses
brycewang-stanford/Awesome-Journal-Skills
A skill your agent uses when stating the learning/motivation theory and hypotheses for a Journal of Educational Psychology manuscript.
A skill your agent uses when running controlled perf experiments to validate hypotheses.
No licenceAuto-check passed
Install Perf Theory Tester
$ npx skills add composio-community/awesome-claude-plugins --skill perf-theory-tester -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install composio-community/awesome-claude-plugins perf-theory-tester --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/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/perf/skills/theory-tester .claude/skills/perf-theory-tester && 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 "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .claude/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-testerType 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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install composio-community/awesome-claude-plugins perf-theory-tester --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .agents/skills && cp -r skills-src/perf/skills/theory-tester .agents/skills/perf-theory-tester && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .agents/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install composio-community/awesome-claude-plugins perf-theory-tester --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/perf/skills/theory-tester .cursor/skills/perf-theory-tester && 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 "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .cursor/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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/composio-community/awesome-claude-plugins.git --path perf/skills/theory-tester--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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install composio-community/awesome-claude-plugins perf-theory-tester --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/perf/skills/theory-tester .gemini/skills/perf-theory-tester && 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 "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .gemini/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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 composio-community/awesome-claude-plugins perf-theory-testerInstalls 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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .github/skills && cp -r skills-src/perf/skills/theory-tester .github/skills/perf-theory-tester && 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 "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .github/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install composio-community/awesome-claude-plugins perf-theory-tester --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/composio-community/awesome-claude-plugins.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/perf/skills/theory-tester .opencode/skills/perf-theory-tester && 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 "perf-theory-tester" agent skill from https://github.com/composio-community/awesome-claude-plugins/tree/master/perf/skills/theory-tester into .opencode/skills/perf-theory-tester/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "perf-theory-tester", 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
perf-theory-tester- GitHub stars
- 1.9k
- Token cost
- ~183 tokens
- SKILL.md length
- 56 words
- Files
- 1
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when running controlled perf experiments to validate hypotheses.
- Works in 4 steps: Confirm baseline is clean. → Apply a single change tied to the… → Run 2+ validation passes. → …
- Running controlled perf experiments to validate hypotheses
- SKILL.md covers Required Steps, Output Format and Constraints
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Perf Theory Tester is an agent skill from composio-community/awesome-claude-plugins. Use when running controlled perf experiments to validate hypotheses.
Its SKILL.md is about 180 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 list of Plugins that let you extend Claude Code with custom commands, agents, hooks, and MCP servers through the plugin system.
When your agent uses it
- Running controlled perf experiments to validate hypotheses
Example prompts
- “/perf-theory-tester”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Confirm baseline is clean.
- Apply a single change tied to the hypothesis.
- Run 2+ validation passes.
- Revert to baseline before the next experiment.
What it can do on your machine
Read from SKILL.md and the folder at commit e521f7a. 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
Perf Theory Tester loads about 183 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 56 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 56 words (~183 tokens).
- name
- perf-theory-tester
- version
- 1.0.0
Files
Just SKILL.md in perf/skills/theory-tester of composio-community/awesome-claude-plugins.
Open the folder on GitHubat commit e521f7a
Compare with similar skills
Perf Theory Tester 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 |
|---|---|---|---|---|---|---|
| Perf Theory Tester this skillcomposio-community/awesome-claude-plugins | 1.9k | — | ~183 | Automated safety check: Pass | None | |
| Jedpsych Theory And Hypothesesbrycewang-stanford/Awesome-Journal-Skills | 1.2k | — | ~1.7k | Automated safety check: Pass | MIT | |
| Devpsych Theory And Hypothesesbrycewang-stanford/Awesome-Journal-Skills | 1.2k | — | ~1.5k | Automated safety check: Pass | MIT | |
| Control UIopenclaw/openclaw | 392k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Agent Testerruvnet/ruflo | 74k | 2 repos | ~2.1k | Automated safety check: Pass | MIT | |
| Finding ExperimentsPostHog/posthog | 40k | — | ~826 | Automated safety check: Pass | Custom licence |
Similar skills
Devpsych Theory And Hypotheses
brycewang-stanford/Awesome-Journal-Skills
A skill your agent uses when stating the developmental theory and age-graded hypotheses for a Developmental Psychology (APA) manuscript.
Control UI
openclaw/openclaw
Operate and troubleshoot the OpenClaw Control UI: navigate connected clients, organize sessions, build session dashboards, and handle direct or Tailscale-hosted Gateways.
Agent Tester
ruvnet/ruflo
Agent skill for tester - invoke with $agent-tester. An agent skill from ruvnet/ruflo.
- Official
Finding Experiments
PostHog/posthog
Resolves a PostHog experiment reference from natural language to a concrete experiment ID by browsing experiment-list (not feature-flag tools), with disambiguation when multiple experiments match.
Experiments
Arize-ai/phoenix
Run, read, and compare dataset-backed experiments to find evidence that a prompt or pipeline is improving.
More from composio-community/awesome-claude-plugins
All 12 skills in this repoReflecting On Sessions
composio-community/awesome-claude-plugins
A skill your agent uses when completing a plan, finishing a development branch, wrapping up a session, or at any natural transition between work phases — reviews skill-bus telemetry to identify…
Perf Analyzer
composio-community/awesome-claude-plugins
A skill your agent uses when synthesizing perf findings into evidence-backed recommendations and decisions.
Perf Benchmarker
composio-community/awesome-claude-plugins
A skill your agent uses when running performance benchmarks, establishing baselines, or validating regressions with sequential runs.
Perf Code Paths
composio-community/awesome-claude-plugins
A skill your agent uses when mapping code paths, entrypoints, and likely hot files before profiling.
Perf Theory Gatherer
composio-community/awesome-claude-plugins
A skill your agent uses when generating performance hypotheses backed by git history and code evidence.
Pause Subs
composio-community/awesome-claude-plugins
Temporarily disable the skill bus. An agent skill from composio-community/awesome-claude-plugins.
Questions about Perf Theory Tester
What does Perf Theory Tester do?
A skill your agent uses when running controlled perf experiments to validate hypotheses. Perf Theory Tester is an agent skill from composio-community/awesome-claude-plugins. Use when running controlled perf experiments to validate hypotheses.
When should I use Perf Theory Tester?
Perf Theory Tester fits situations like: running controlled perf experiments to validate hypotheses.
How do I install Perf Theory Tester in Claude Code?
Run `npx skills add composio-community/awesome-claude-plugins --skill perf-theory-tester -a claude-code`. Or copy the skill folder (perf/skills/theory-tester in composio-community/awesome-claude-plugins) into .claude/skills/perf-theory-tester in your project. Claude Code loads it when a task matches its description.
How do I install Perf Theory Tester in Codex?
Run `npx skills add composio-community/awesome-claude-plugins --skill perf-theory-tester -a codex`. Or copy the skill folder (perf/skills/theory-tester in composio-community/awesome-claude-plugins) into .agents/skills/perf-theory-tester in your project. Codex loads it when a task matches its description.
Can I use Perf Theory Tester 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 composio-community/awesome-claude-plugins --skill perf-theory-tester -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/perf-theory-tester, .gemini/skills/perf-theory-tester, .github/skills/perf-theory-tester and .opencode/skills/perf-theory-tester in your project.
What does Perf Theory Tester need to run?
SKILL.md names no scripts, command-line tools or credentials: Perf Theory Tester is instructions for the agent only.
Does Perf Theory Tester 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 Perf Theory Tester 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 Perf Theory Tester use?
No licence was found for Perf Theory Tester or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Perf Theory Tester use?
About 183 tokens (SKILL.md is roughly 732 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 Perf Theory Tester?
Skills that share tags, products or a category with Perf Theory Tester: Jedpsych Theory And Hypotheses (brycewang-stanford/Awesome-Journal-Skills, 1.2k stars), Devpsych Theory And Hypotheses (brycewang-stanford/Awesome-Journal-Skills, 1.2k stars), Control UI (openclaw/openclaw, 392k stars) and Agent Tester (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Perf Theory Tester?
composio-community (a GitHub organization) maintains it in composio-community/awesome-claude-plugins, which has 1,936 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on July 26, 2026.
Source: composio-community/awesome-claude-plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.