A general-purpose AI agent is a blank slate. Product on Purpose fills it in: open-source skills, tools, and libraries that turn an everyday agent into a capable partner for product work, one composable piece at a time.

• 🧭 pm-skills - 65 plug-and-play product management skills covering the full product lifecycle.
• 🤔 thinking-framework-skills - Evidence-graded thinking methods an agent can run to reason, not just chat.
• 🤖 agent-skills-toolkit - A standard and toolkit for grading skill libraries to a Bronze/Silver/Gold bar.
• ✍️ writing-style-catalog - Composable writing instructions so AI prose lands in the voice you actually want.
• 🧩 agent-plugins - The marketplace that puts every Product on Purpose plugin one command away.
• 🧰 pm-skills-mcp - The PM catalog as an MCP server (maintenance mode).

Get started. Most of these install as Claude Code plugins. Add the marketplace once, then grab any plugin below:

/plugin marketplace add product-on-purpose/agent-plugins

🟢 Active · 🚀 Flagship · 65 skills · 4 sub-agents · 10 workflows · templates · 95+ samples

The flagship of the portfolio and the place most people should start. It hands your agent a curated set of best-practice product workflows to run on demand, end to end.

/plugin install pm-skills@product-on-purpose

• Stop prompting PM work from scratch. Each skill is a best-practice workflow (PRDs, hypotheses, user stories, sprint facilitation) that you invoke by name instead of re-explaining the method every time.
• Covers the whole lifecycle. From Foundation Sprint and Design Sprint at the fuzzy front end through discovery, delivery, and iteration, with sub-agents and workflow orchestrators that chain skills into full routines.
• Quality you can see. 95+ real-world sample outputs set the bar, and CI-enforced contracts keep every skill conformant as the catalog grows.

🟢 Active · 34 skills · 5 recipes · evidence-graded

Structured reasoning your agent can actually execute, not just name-drop. Think of it as a toolbox of decision-making moves, each one graded so you know how far to trust it.

/plugin install thinking-framework-skills@product-on-purpose

• Agents reason better with a method. Canonical thinking tools (premortems, first principles, parallel-perspective review) packaged so an agent runs the actual move, not a vague impression of it.
• Honest about the evidence. Every skill carries a transparent grade, from replicated research down to practitioner heuristic, so you know how far to trust it. No laundered statistics.
• Always ends in an artifact. Each run hands back something usable, a risk register, an option matrix, an argument map, rather than more prose.

🟢 Active · Standard + toolkit · 23 skills · 25 checks · Gold-in-CI

The meta-layer for anyone authoring skills at scale. It defines what a great, multi-agent skill library looks like, then gives you the tooling to prove yours measures up.

/plugin install agent-skills-toolkit@product-on-purpose

• For people building skills, not just using them. A toolkit and a normative Standard for authoring skill libraries that work across Claude Code and Codex from a single source.
• A quality bar you can climb. Grades a whole library against a tiered Bronze/Silver/Gold rubric and returns a burndown of exactly what blocks the next tier.
• Deterministic, not vibes. Zero-dependency Node validators with real exit codes, and the repo self-validates at Gold in its own CI as the proof.

🟢 Active · 🧪 Experimental · 60 entries · 4 axes (Voice/Tone/Style/Format)

Composable control over how an agent sounds on the page. It turns "make it sound professional" into a precise, reusable instruction you can drop onto any writing task.

/plugin install writing-style-catalog@product-on-purpose

• Make AI writing stop sounding like AI. Compose precise, reusable instructions from named building blocks instead of retyping "make it sound professional" and hoping.
• Four orthogonal axes. Mix Voice, Tone, Style, and Format independently to dial in exactly the register and shape a piece needs.
• Worked examples, not vibes. Every entry ships with samples that show what it actually produces, so you can see a style before you commit to it.

🟢 Active · Marketplace · Claude Code

The registry that ties the whole ecosystem together. It is how every plugin above becomes a one-line install inside Claude Code.

/plugin marketplace add product-on-purpose/agent-plugins

• One front door to everything. The Claude Code marketplace registry for the whole portfolio: add it once and every Product on Purpose plugin is a single command away.
• Deliberately thin. No plugin code lives here, just the index, so it stays fast to load and easy to trust.

🟤 Maintenance · MCP server · 59 tools (40 skills, 11 workflows, 8 utilities)

The same product management catalog, delivered over the Model Context Protocol for agents that prefer native tools to files.

npm install -g pm-skills-mcp

• The PM catalog over Model Context Protocol. Exposes 59 tools to any MCP-aware agent with no file setup.
• Stable, but paused. Fully functional at v2.9.3; active development is on hold, so new users are better served by the file-based install from pm-skills.