Benchmark
affaan-m/ECC
Measure performance baselines and detect regressions across browser Core Web Vitals (LCP, INP, CLS, page weight), API endpoint latency percentiles, and build/test feedback times, with before/after…
Benchmark Rubydex indexing performance on RBS core/stdlib, comparing the current branch against main.
OfficialCustom licenceAuto-check passed
Install Benchmark Rbs
$ npx skills add Shopify/rubydex --skill benchmark-rbs -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Shopify/rubydex benchmark-rbs --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/Shopify/rubydex.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/benchmark-rbs .claude/skills/benchmark-rbs && 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 "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .claude/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbsType 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 Shopify/rubydex --skill benchmark-rbs -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Shopify/rubydex benchmark-rbs --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Shopify/rubydex.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/benchmark-rbs .agents/skills/benchmark-rbs && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .agents/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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 Shopify/rubydex --skill benchmark-rbs -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Shopify/rubydex benchmark-rbs --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Shopify/rubydex.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/benchmark-rbs .cursor/skills/benchmark-rbs && 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 "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .cursor/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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/Shopify/rubydex.git --path .claude/skills/benchmark-rbs--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 Shopify/rubydex --skill benchmark-rbs -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Shopify/rubydex benchmark-rbs --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Shopify/rubydex.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/benchmark-rbs .gemini/skills/benchmark-rbs && 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 "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .gemini/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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 Shopify/rubydex benchmark-rbsInstalls 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 Shopify/rubydex --skill benchmark-rbs -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Shopify/rubydex.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/benchmark-rbs .github/skills/benchmark-rbs && 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 "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .github/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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 Shopify/rubydex --skill benchmark-rbs -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Shopify/rubydex benchmark-rbs --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Shopify/rubydex.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/benchmark-rbs .opencode/skills/benchmark-rbs && 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 "benchmark-rbs" agent skill from https://github.com/Shopify/rubydex/tree/main/.claude/skills/benchmark-rbs into .opencode/skills/benchmark-rbs/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "benchmark-rbs", 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
benchmark-rbs- GitHub stars
- 363
- Token cost
- ~723 tokens
- SKILL.md length
- 273 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Benchmark Rubydex indexing performance on RBS core/stdlib, comparing the current branch against main.
- Works in 5 steps: Record branch names and commit SHAs → Build the current branch (release) → Build main (release) → …
- SKILL.md covers Target paths, Steps, Metrics and Notes
- Calls git and cargo; reaches github.com
What it does
Benchmark Rbs is an agent skill from Shopify/rubydex, published by the product's own GitHub organization. Benchmark Rubydex indexing performance on RBS core/stdlib, comparing the current branch against main. Measures maximum RSS and execution time.
Its SKILL.md is about 720 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 high-performance static analysis toolkit for Ruby.
Example prompts
- “/benchmark-rbs”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Record branch names and commit SHAs
- Build the current branch (release)
- Build main (release)
- Run benchmarks
- Compare results
What it can do on your machine
Read from SKILL.md and the folder at commit d8ff475. 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:
gitcargo
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
github.com
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
Benchmark Rbs loads about 723 tokens when it runs. Until then it costs about 39 tokens; SKILL.md has 273 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 273 words (~723 tokens).
“Compare Rubydex indexing performance between main and the current topic branch using the RBS core and stdlib directories.”
- name
- benchmark-rbs
Files
Just SKILL.md in .claude/skills/benchmark-rbs of Shopify/rubydex.
Open the folder on GitHubat commit d8ff475
Compare with similar skills
Benchmark Rbs 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 |
|---|---|---|---|---|---|---|
| Benchmark Rbs this skillShopify/rubydex | 363 | — | ~723 | Automated safety check: Pass | Custom licence | |
| Benchmarkaffaan-m/ECC | 275k | 3 repos | ~654 | Automated safety check: Pass | MIT | |
| Benchmarkaffaan-m/ECC | 275k | — | ~412 | Automated safety check: Pass | MIT | |
| Benchmarkaffaan-m/ECC | 275k | — | ~330 | Automated safety check: Pass | MIT | |
| Indexabilitythedaviddias/Front-End-Checklist | 74k | — | ~814 | Automated safety check: Pass | MIT | |
| Gstack Performance Benchmarkgarrytan/gstack | 136k | — | ~7.3k | Automated safety check: Notes | MIT |
Similar skills
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このスキルを使用して、パフォーマンスベースラインを測定し、PR前後の回帰を検出し、スタック代替案を比較します. An agent skill from affaan-m/ECC.
Benchmark
affaan-m/ECC
使用此技能测量性能基线，检测PR前后的回归，并比较堆栈替代方案。
Indexability
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Gstack Performance Benchmark
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Benchmark Methodology
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- Official
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Questions about Benchmark Rbs
What does Benchmark Rbs do?
Benchmark Rubydex indexing performance on RBS core/stdlib, comparing the current branch against main. Benchmark Rbs is an agent skill from Shopify/rubydex, published by the product's own GitHub organization. Benchmark Rubydex indexing performance on RBS core/stdlib, comparing the current branch against main.
How do I install Benchmark Rbs in Claude Code?
Run `npx skills add Shopify/rubydex --skill benchmark-rbs -a claude-code`. Or copy the skill folder (.claude/skills/benchmark-rbs in Shopify/rubydex) into .claude/skills/benchmark-rbs in your project. Claude Code loads it when a task matches its description.
How do I install Benchmark Rbs in Codex?
Run `npx skills add Shopify/rubydex --skill benchmark-rbs -a codex`. Or copy the skill folder (.claude/skills/benchmark-rbs in Shopify/rubydex) into .agents/skills/benchmark-rbs in your project. Codex loads it when a task matches its description.
Can I use Benchmark Rbs 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 Shopify/rubydex --skill benchmark-rbs -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/benchmark-rbs, .gemini/skills/benchmark-rbs, .github/skills/benchmark-rbs and .opencode/skills/benchmark-rbs in your project.
What does Benchmark Rbs need to run?
Going by SKILL.md and its folder, Benchmark Rbs needs the command-line tools its instructions call (git and cargo).
Does Benchmark Rbs access the network?
SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Benchmark Rbs 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 Benchmark Rbs use?
Benchmark Rbs 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 Benchmark Rbs use?
About 723 tokens (SKILL.md is roughly 2.9k 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 Benchmark Rbs?
Skills that share tags, products or a category with Benchmark Rbs: Benchmark (affaan-m/ECC, 275k stars), Benchmark (affaan-m/ECC, 275k stars), Benchmark (affaan-m/ECC, 275k stars) and Indexability (thedaviddias/Front-End-Checklist, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Benchmark Rbs?
Shopify (a GitHub organization, an official publisher) maintains it in Shopify/rubydex, which has 363 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 1, 2026.
Source: Shopify/rubydex on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.