Swarma
glitch-rabin/swarma
Agent teams that run growth experiments and build their own playbook.
Define a North Star Metric and its input metrics. An agent skill from amplitude/builder-skills.
Install North Star Metric
$ npx skills add amplitude/builder-skills --skill north-star-metric -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install amplitude/builder-skills north-star-metric --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/amplitude/builder-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/growth-skills/skills/north-star-metric .claude/skills/north-star-metric && 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 "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .claude/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metricType 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 amplitude/builder-skills --skill north-star-metric -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install amplitude/builder-skills north-star-metric --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/growth-skills/skills/north-star-metric .agents/skills/north-star-metric && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .agents/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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 amplitude/builder-skills --skill north-star-metric -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install amplitude/builder-skills north-star-metric --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/growth-skills/skills/north-star-metric .cursor/skills/north-star-metric && 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 "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .cursor/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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/amplitude/builder-skills.git --path growth-skills/skills/north-star-metric--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 amplitude/builder-skills --skill north-star-metric -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install amplitude/builder-skills north-star-metric --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/growth-skills/skills/north-star-metric .gemini/skills/north-star-metric && 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 "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .gemini/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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 amplitude/builder-skills north-star-metricInstalls 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 amplitude/builder-skills --skill north-star-metric -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/growth-skills/skills/north-star-metric .github/skills/north-star-metric && 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 "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .github/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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 amplitude/builder-skills --skill north-star-metric -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install amplitude/builder-skills north-star-metric --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/amplitude/builder-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/growth-skills/skills/north-star-metric .opencode/skills/north-star-metric && 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 "north-star-metric" agent skill from https://github.com/amplitude/builder-skills/tree/main/growth-skills/skills/north-star-metric into .opencode/skills/north-star-metric/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "north-star-metric", 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
north-star-metric- GitHub stars
- 159
- Token cost
- ~2.2k tokens
- SKILL.md length
- 1,192 words
- Files
- 1
- Skills in repo
- 61
- Repo updated
- First seen
- Licence
- None found
At a glance
Define a North Star Metric and its input metrics. An agent skill from amplitude/builder-skills.
- Works in 6 steps: Classify the Game → Generate NSM Candidates → Evaluate Against Quality Criteria → …
- Choosing a North Star
- SKILL.md covers Domain Context, When to Use, Prompt and Tips, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
North Star Metric is an agent skill from amplitude/builder-skills. Define a North Star Metric and its input metrics. Classify the game your product plays, evaluate candidates against quality criteria, and build a connected metric system. Use when choosing a North Star, evaluating an existing one, or setting up a metrics framework.
Its SKILL.md is about 2.2k 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 Product & Project Management, covering Product metrics. The repository describes itself as: Open-source AI skills for product managers — battle-tested by PMs at Amplitude.
When your agent uses it
- Choosing a North Star
- Evaluating an existing one
- Setting up a metrics framework
Example prompts
- “/north-star-metric”
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Classify the Game
- Generate NSM Candidates
- Evaluate Against Quality Criteria
- Recommend an NSM
- Define Input Metrics
- Validate the System
What it can do on your machine
Read from SKILL.md and the folder at commit 51838c2. 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
Links to these hosts (documentation or services it may open):
amplitude.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
North Star Metric loads about 2.2k tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 1,192 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 1,192 words (~2,158 tokens).
“Define a North Star Metric that captures customer value, aligns your team, and predicts long-term business success.”
- name
- north-star-metric
- suggest_when
- User asks about North Star metrics, key metrics, what to measure, "what's our North Star", wants to define or evaluate a top-level product metric, or is…
Files
Just SKILL.md in growth-skills/skills/north-star-metric of amplitude/builder-skills.
Open the folder on GitHubat commit 51838c2
Compare with similar skills
North Star Metric 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 |
|---|---|---|---|---|---|---|
| North Star Metric this skillamplitude/builder-skills | 159 | — | ~2.2k | Automated safety check: Pass | None | |
| Swarmaglitch-rabin/swarma | 173 | — | ~4.4k | Automated safety check: Notes | MIT | |
| Prdjuanandresgs/claude-ctrl | 193 | — | ~2.9k | Automated safety check: Pass | None | |
| AI Product Strategy InterviewerPrepLabsAI/InterviewMentor | 112 | — | ~4.5k | Automated safety check: Pass | MIT | |
| Investigate MetricPostHog/posthog | 40k | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Weekly Creative Reportreal-simple-labs/parker-brain | 102 | — | ~4.7k | Automated safety check: Pass | Custom licence |
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AI Product Strategy Interviewer
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Diagnose why a product metric changed (dropped, spiked, or plateaued) by orchestrating breakdowns, actors, paths, lifecycle, retention, and annotations queries.
Weekly Creative Report
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Build the brand's weekly creative report, a polished, shareable page an agency can send straight to the brand's CMO and team.
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Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs.
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Related
Categories
Questions about North Star Metric
What does North Star Metric do?
Define a North Star Metric and its input metrics. An agent skill from amplitude/builder-skills. North Star Metric is an agent skill from amplitude/builder-skills. Define a North Star Metric and its input metrics.
When should I use North Star Metric?
North Star Metric fits situations like: choosing a North Star; evaluating an existing one; setting up a metrics framework.
How do I install North Star Metric in Claude Code?
Run `npx skills add amplitude/builder-skills --skill north-star-metric -a claude-code`. Or copy the skill folder (growth-skills/skills/north-star-metric in amplitude/builder-skills) into .claude/skills/north-star-metric in your project. Claude Code loads it when a task matches its description.
How do I install North Star Metric in Codex?
Run `npx skills add amplitude/builder-skills --skill north-star-metric -a codex`. Or copy the skill folder (growth-skills/skills/north-star-metric in amplitude/builder-skills) into .agents/skills/north-star-metric in your project. Codex loads it when a task matches its description.
Can I use North Star Metric 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 amplitude/builder-skills --skill north-star-metric -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/north-star-metric, .gemini/skills/north-star-metric, .github/skills/north-star-metric and .opencode/skills/north-star-metric in your project.
What does North Star Metric need to run?
SKILL.md names no scripts, command-line tools or credentials: North Star Metric is instructions for the agent only.
Does North Star Metric access the network?
SKILL.md names 1 domain. As links in the text: amplitude.com. This is read from the text; nothing was executed.
Is North Star Metric 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 North Star Metric use?
No licence was found for North Star Metric or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does North Star Metric use?
About 2.2k tokens (SKILL.md is roughly 8.6k 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 North Star Metric?
Skills that share tags, products or a category with North Star Metric: Swarma (glitch-rabin/swarma, 173 stars), Prd (juanandresgs/claude-ctrl, 193 stars), AI Product Strategy Interviewer (PrepLabsAI/InterviewMentor, 112 stars) and Investigate Metric (PostHog/posthog, 40k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains North Star Metric?
amplitude (a GitHub organization) maintains it in amplitude/builder-skills, which has 159 GitHub stars. The repository holds 61 skills in this directory. The repository was last updated on July 24, 2026.
Source: amplitude/builder-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.