What it does

PM Skills Marketplace is a collection of agentic plugins for Claude Code and Cowork (with partial support for Gemini, Cursor, OpenCode, and others). It packages proven PM frameworks — Opportunity Solution Trees, Lean Startup pretotypes, Porter’s Five Forces, JTBD value propositions — as structured skills and chained slash commands. Type /discover and it runs ideation → assumption mapping → prioritization → experiment design without you remembering the steps.

The interesting bit

The project treats PM frameworks as infrastructure, not inspiration. Each skill is a markdown file with encoded domain knowledge; commands chain them into workflows that suggest next steps automatically. The README name-drops Teresa Torres, Marty Cagan, and Alberto Savoia with the confidence of someone who actually built their ideas into YAML-adjacent config files.

Key highlights

• 8 plugins covering discovery, strategy, execution, go-to-market, data analytics, marketing/growth, market research, and a general toolkit
• 65 skills + 36 commands; skills auto-load contextually, or force-load with /plugin:skill
• Commands chain end-to-end: /discover runs 4 skills, /strategy builds a 9-section canvas
• Universal skill format works across Claude, Gemini CLI, Cursor, OpenCode, Codex CLI, and Kiro — though slash commands stay Claude-specific
• Companion repo pm-brain exists for deeper integration

Caveats

• Installation for non-Claude tools is manual folder-copying; the “universal” format still requires per-tool babysitting
• README is enthusiastic about “better product decisions, not just faster documents” — the actual quality of those decisions depends entirely on how well the underlying prompts are written, which the sources don’t demonstrate
• 11.9K stars with no code language listed suggests this is primarily markdown and configuration, not a runtime system

Verdict

Worth a look if you’re a PM already using Claude Code or Cowork and tired of re-explaining JTBD to a chatbot every sprint. Skip it if you want a standalone tool — this is prompt engineering as a service, and you’ll still be doing the actual product work.