Electron Multi-Process Architecture
iOfficeAI/AionUi
Tells the agent where new code belongs in an Electron multi-process project and which APIs each process may use, with rules for new bridges, services, agents and workers.
Diagnose React runtime performance with React Doctor traces, live render outlines, Long Animation Frames, interaction timing, and component render evidence.
Install Performance
$ npx skills add millionco/react-doctor --skill performance -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install millionco/react-doctor performance --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/millionco/react-doctor.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/performance .claude/skills/performance && 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 "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .claude/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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/millionco/react-doctor/tree/main/skills/performanceType 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 millionco/react-doctor --skill performance -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install millionco/react-doctor performance --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/millionco/react-doctor.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/performance .agents/skills/performance && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .agents/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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 millionco/react-doctor --skill performance -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install millionco/react-doctor performance --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/millionco/react-doctor.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/performance .cursor/skills/performance && 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 "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .cursor/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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/millionco/react-doctor.git --path skills/performance--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 millionco/react-doctor --skill performance -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install millionco/react-doctor performance --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/millionco/react-doctor.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/performance .gemini/skills/performance && 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 "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .gemini/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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 millionco/react-doctor performanceInstalls 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 millionco/react-doctor --skill performance -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/millionco/react-doctor.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/performance .github/skills/performance && 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 "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .github/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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 millionco/react-doctor --skill performance -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install millionco/react-doctor performance --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/millionco/react-doctor.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/performance .opencode/skills/performance && 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 "performance" agent skill from https://github.com/millionco/react-doctor/tree/main/skills/performance into .opencode/skills/performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performance", 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
performance- GitHub stars
- 15k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 553 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Diagnose React runtime performance with React Doctor traces, live render outlines, Long Animation Frames, interaction timing, and component render evidence.
- Works in 4 steps: Identify the target URL → Write the exact actions to reproduce → Choose the expected result → …
- Invoked as /performance for a slow interaction
- SKILL.md covers Define the interaction, Record the trace, Read the report and Connect measurements to source, plus 2 more sections
- Calls npx
What it does
Performance is an agent skill from millionco/react-doctor. Diagnose React runtime performance with React Doctor traces, live render outlines, Long Animation Frames, interaction timing, and component render evidence. Use when invoked as /performance for a slow interaction, unexpected re-renders, or a measured before-and-after comparison.
Its SKILL.md is about 1.2k 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 Development. It works with React. The repository describes itself as: Your agent writes bad React. This catches it.
When your agent uses it
- Invoked as /performance for a slow interaction
- Unexpected re-renders
- A measured before-and-after comparison
Example prompts
- “/performance”
Requirements
- Node.js
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Identify the target URL
- Write the exact actions to reproduce
- Choose the expected result
- Confirm whether authentication is required
What it can do on your machine
Read from SKILL.md and the folder at commit 418c6c8. 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:
npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.
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
Performance loads about 1.2k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 553 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 553 words (~1,234 tokens).
“Measure one reproducible interaction, connect browser work to React renders, and report only conclusions supported by the trace.”
- name
- performance
- disable-model-invocation
- true
Files
Just SKILL.md in skills/performance of millionco/react-doctor.
Open the folder on GitHubat commit 418c6c8
Compare with similar skills
Performance 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 |
|---|---|---|---|---|---|---|
| Performance this skillmillionco/react-doctor | 15k | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Electron Multi-Process ArchitectureiOfficeAI/AionUi | 33k | 1 repos | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| @pierre/diffs Code Renderingpierrecomputer/pierre | 6.2k | 2 repos | ~803 | Automated safety check: Pass | Apache-2.0 | |
| Nx Generatenomcopter/react-mosaic | 4.8k | 6 repos | ~1.9k | Automated safety check: Pass | Custom licence | |
| OpenTUI Terminal Interfacescline/cline | 70k | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Claude Code Skillcodeaashu/claude-code | 3.4k | 1 repos | ~2.7k | Automated safety check: Pass | Proprietary |
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Development conventions and architecture guide for the Claude Code CLI repository.
Review Dep Upgrade
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Related
Works with
Categories
Questions about Performance
What does Performance do?
Diagnose React runtime performance with React Doctor traces, live render outlines, Long Animation Frames, interaction timing, and component render evidence. Performance is an agent skill from millionco/react-doctor. Diagnose React runtime performance with React Doctor traces, live render outlines, Long Animation Frames, interaction timing, and component render evidence.
When should I use Performance?
Performance fits situations like: invoked as /performance for a slow interaction; unexpected re-renders; A measured before-and-after comparison.
How do I install Performance in Claude Code?
Run `npx skills add millionco/react-doctor --skill performance -a claude-code`. Or copy the skill folder (skills/performance in millionco/react-doctor) into .claude/skills/performance in your project. Claude Code loads it when a task matches its description.
How do I install Performance in Codex?
Run `npx skills add millionco/react-doctor --skill performance -a codex`. Or copy the skill folder (skills/performance in millionco/react-doctor) into .agents/skills/performance in your project. Codex loads it when a task matches its description.
Can I use Performance 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 millionco/react-doctor --skill performance -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performance, .gemini/skills/performance, .github/skills/performance and .opencode/skills/performance in your project.
What does Performance need to run?
Going by SKILL.md and its folder, Performance needs the command-line tools its instructions call (npx). Our summary lists: Node.js.
Does Performance access the network?
SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Performance 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 Performance use?
Performance 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 Performance use?
About 1.2k tokens (SKILL.md is roughly 4.9k 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 Performance?
Skills that share tags, products or a category with Performance: Electron Multi-Process Architecture (iOfficeAI/AionUi, 33k stars), @pierre/diffs Code Rendering (pierrecomputer/pierre, 6.2k stars), Nx Generate (nomcopter/react-mosaic, 4.8k stars) and OpenTUI Terminal Interfaces (cline/cline, 70k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Performance?
millionco (a GitHub organization) maintains it in millionco/react-doctor, which has 14,965 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 7, 2026.
Source: millionco/react-doctor on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.