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Agent skill

North Star

by andreaskelm in andreaskelm/pm-brain

Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs.

Custom licenceAuto-check passedProduct & Project Management

Install North Star

skills CLI
$ npx skills add andreaskelm/pm-brain --skill north-star -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install andreaskelm/pm-brain north-star --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/andreaskelm/pm-brain.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/north-star .claude/skills/north-star && rm -rf skills-src

Use ~/.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/

Facts

Skill name
north-star
GitHub stars
234
Token cost
~2.5k tokens
SKILL.md length
1,478 words
Files
4 (incl. references)
Skills in repo
18
Repo updated
First seen
Licence
Custom licence

At a glance

Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs.

  • Works in 7 steps: Preflight (before naming any metric) → Find the value moment and the game → Pick a North Star that captures customer… → …
  • The user says define our north star metric
  • SKILL.md covers Is a North Star the right thing?, Step 1 — Preflight (before…, Step 2 — Find the value moment… and Step 3 — Pick a North Star…, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

North Star is an agent skill from andreaskelm/pm-brain. Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs. lagging, guardrails, vanity vs. actionable, AARRR pirate metrics funnel). Use when the user says "define our north star metric", "what metric should we track", "what should we measure", "metrics framework", "input metrics", "KPIs for my product", "success metrics for my product", "AARRR", "pirate metrics", "where are users dropping off", or "is this a vanity metric". Finds the…

Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/criteria.md`, `references/metrics.md` and `references/template.md`).

It sits in Product & Project Management, covering Product metrics. The repository describes itself as: AI-powered product management thinking & operating system. Playbooks, guides, templates, and frameworks that bridge PM theory to daily execution.

When your agent uses it

  • The user says define our north star metric
  • What metric should we track
  • What should we measure
  • Metrics framework

Example prompts

  • “define our north star metric”
  • “what metric should we track”
  • “what should we measure”
  • “/north-star”

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Preflight (before naming any metric)
  2. Find the value moment and the game
  3. Pick a North Star that captures customer value, not revenue
  4. 3–5 input metrics the team can move
  5. Guardrails
  6. Baseline before target
  7. Watch for red flags as it takes shape

What it can do on your machine

Read from SKILL.md and the folder at commit 38696ac. 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

North Star loads about 2.5k tokens when it runs, and up to ~6.8k if it reads all its reference files. Until then it costs about 144 tokens; SKILL.md has 1,478 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~144
When it runs · the whole SKILL.md, loaded when a task matches
~2.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~6.8k

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 1,478 words (~2,450 tokens).

“A North Star is one metric that captures the value customers actually get, plus 3–5 input metrics that teams can move with their own work. It's an alignment tool, not a dashboard and not a goal for the board deck…”

— opening of SKILL.md by andreaskelm, Custom licence
name
north-star

Read the full SKILL.md on GitHub

Files

SKILL.md and 3 other files (references) in .claude/skills/north-star of andreaskelm/pm-brain.

  • SKILL.md
  • references/criteria.md
  • references/metrics.md
  • references/template.md

Open the folder on GitHubat commit 38696ac

Compare with similar skills

North Star 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.

North Star compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
North Star this skillandreaskelm/pm-brain234—~2.5kAutomated safety check: PassCustom licence
Swarmaglitch-rabin/swarma173—~4.4kAutomated safety check: NotesMIT
Prdjuanandresgs/claude-ctrl193—~2.9kAutomated safety check: PassNone
AI Product Strategy InterviewerPrepLabsAI/InterviewMentor112—~4.5kAutomated safety check: PassMIT
Investigate MetricPostHog/posthog40k—~1.9kAutomated safety check: PassCustom licence
Weekly Creative Reportreal-simple-labs/parker-brain102—~4.7kAutomated safety check: PassCustom licence

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  • Experimentation

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  • Launch Gtm

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  • Okr

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Categories

Questions about North Star

What does North Star do?

Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs. North Star is an agent skill from andreaskelm/pm-brain. Define, sharpen, or audit a North Star metric and its input metrics tree, and decide which product metrics actually matter (leading vs.

When should I use North Star?

North Star fits situations like: the user says define our north star metric; what metric should we track; what should we measure; metrics framework.

How do I install North Star in Claude Code?

Run `npx skills add andreaskelm/pm-brain --skill north-star -a claude-code`. Or copy the skill folder (.claude/skills/north-star in andreaskelm/pm-brain) into .claude/skills/north-star in your project. Claude Code loads it when a task matches its description.

How do I install North Star in Codex?

Run `npx skills add andreaskelm/pm-brain --skill north-star -a codex`. Or copy the skill folder (.claude/skills/north-star in andreaskelm/pm-brain) into .agents/skills/north-star in your project. Codex loads it when a task matches its description.

Can I use North Star 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 andreaskelm/pm-brain --skill north-star -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, .gemini/skills/north-star, .github/skills/north-star and .opencode/skills/north-star in your project.

What does North Star need to run?

SKILL.md names no scripts, command-line tools or credentials: North Star is instructions for the agent only.

Does North Star 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 North Star 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 use?

North Star 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 North Star use?

About 2.5k tokens (SKILL.md is roughly 9.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.4k tokens, read only when the agent opens those files.

What are the alternatives to North Star?

Skills that share tags, products or a category with North Star: 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?

andreaskelm (a GitHub user) maintains it in andreaskelm/pm-brain, which has 234 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 9, 2026.

Source: andreaskelm/pm-brain on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.