{
  "markdown": "# Revenue-Centric Design — an Agent Skill\n\n![Agent Skill](https://img.shields.io/badge/Agent-Skill-5b4ee6)\n![Principles](https://img.shields.io/badge/principles-134-2ea44f)\n![Themes](https://img.shields.io/badge/themes-12-2ea44f)\n![Updated](https://img.shields.io/badge/updated-2026--09--03-e67e22)\n\n> A distilled, English-language playbook for designing SaaS & startup products that **convert, retain, and monetize** — packaged as an [Agent Skill](https://agentskills.io) for Claude Code, Cursor, Codex, Copilot, Gemini, and any [skills.sh](https://skills.sh)-compatible agent.\n\n**134 principles** distilled from the X/Twitter writing of **Richard ([@richardrx](https://x.com/richardrx))** — a product designer specializing in conversion-rate optimization, churn reduction, and applied behavioral science (**ex-Volkswagen, ex-PayPal, ex-IBM**). The throughline is his coined philosophy, **Revenue-Centric Design (RCD)**: design should serve the user _and_ the business — value and revenue, not one or the other.\n\n> **Last updated:** 3 September 2026\n> **Coverage:** @richardrx's curated posts from **3 Nov 2025 → 26 Aug 2026** (136 posts). Anything posted after this date is not yet included — see [Updating](#updating).\n\n## Install\n\n```bash\nnpx skills add heliocosta-dev/revenue-centric-design\n```\n\nThis pulls the skill into your agent's skills directory (`.claude/skills/`, `.agents/skills/`, …) and works with any Agent Skills–compatible agent.\n\n**Already installed it?** Pull the latest version with `npx skills update revenue-centric-design` (or a bare `npx skills update` to refresh every installed skill). The command re-fetches from GitHub; your agent picks up the new content on its next session.\n\nOr install it manually:\n\n```bash\ngit clone https://github.com/heliocosta-dev/revenue-centric-design.git ~/.claude/skills/revenue-centric-design\n```\n\n## ⚠️ Usage boundary\n\n> 🚫 **Not for betting, casino, or gambling products.** The author granted permission to reuse this material on the explicit condition that it is **never used for gambling/betting/casino work** (including loot-box / real-money-gaming mechanics). The skill instructs agents to decline such requests. See [LICENSE](LICENSE).\n\n## What's inside\n\nThe skill loads only the theme relevant to your question (progressive disclosure). Each principle follows a fixed shape — **Principle → Apply when → The move → Evidence → Visual → Source** — so your agent gets the _named lever_ (decoy effect, Swiss Knife Index, GBB, Eugene Schwartz's awareness levels, loss aversion, peak-end rule…), the concrete action, and the proof.\n\n| Theme                                                                      | Principles | Covers                                               |\n| -------------------------------------------------------------------------- | ---------: | ---------------------------------------------------- |\n| [Conversion & Landing Pages](references/conversion-and-landing-pages.md)   |         24 | hero/copy, CTAs, social proof, awareness levels, CRO |\n| [Checkout & Forms](references/checkout-and-forms.md)                       |          5 | checkout, lead forms, cart abandon, field friction   |\n| [Onboarding & Activation](references/onboarding-and-activation.md)         |         20 | empty states, aha moment, TTV, activation, trials    |\n| [Revenue-Centric Design](references/revenue-centric-design.md)             |         13 | the RCD principles, design process & method          |\n| [Pricing & Monetization](references/pricing-and-monetization.md)           |         15 | decoy/anchoring, GBB, trial-with-card, upgrades      |\n| [Churn & Retention](references/churn-and-retention.md)                     |         13 | cancellation UX, expectation debt, NRR, JTBD         |\n| [Dashboards & Data Visualization](references/dashboards-and-data-viz.md)   |          3 | KPIs, actionable panels, F-pattern, role context     |\n| [Behavioral Science Toolkit](references/behavioral-science-toolkit.md)     |          7 | the cross-cutting biases & persuasion levers         |\n| [Product Strategy & Features](references/product-strategy-and-features.md) |         13 | Swiss Knife Index, feature adoption, attention       |\n| [Positioning, ICP & GTM](references/positioning-icp-and-gtm.md)            |          8 | ICP, niche, TAM/SAM/SOM, PLG, first customers        |\n| [AI-Era Differentiation](references/ai-era-differentiation.md)             |          7 | moats, commoditization, vibe-coding pitfalls         |\n| [Metrics & Experimentation](references/metrics-and-experimentation.md)     |          6 | A/B rigor, vanity metrics, churn→LTV math            |\n\nThe agent entry point is [`SKILL.md`](SKILL.md); informational diagrams referenced by the principles live in [`assets/`](assets/).\n\n## The spine: RCD in 9 principles\n\n1. **Neutrality is omission** — an interface that doesn't direct hurts conversion.\n2. **Who talks to everyone convinces no one** — no ICP → generic value → worse retention.\n3. **Value first, ask later** — proof must arrive before the user questions their choice.\n4. **Your promise is the size of your proof** — the market believes what you demonstrate, not what you claim.\n5. **Same competes on price, different on category** — no contrast, no margin.\n6. **Default is the decision you made for the user** — the initial state defines mass behavior.\n7. **Retention is built, not requested** — perceived loss retains more than promised benefit.\n8. **Expansion is born of usage** — upgrade at the moment of the limit, never by interruption.\n9. **Price is a filter** — pricing defines who enters, who stays, and who expands.\n\n## Updating\n\nThis is a point-in-time snapshot. The **Coverage** date above marks the latest included post (**26 Aug 2026**); anything newer from [@richardrx](https://x.com/richardrx) isn't here yet. To extend it: gather the newer posts, distill each into the same principle shape, file it under the right `references/` theme, then bump the dates in this README and in [CHANGELOG.md](CHANGELOG.md).\n\n## Provenance & attribution\n\nAll ideas, frameworks, examples, and the coined term _Revenue-Centric Design_ belong to **Richard ([@richardrx](https://x.com/richardrx))**. This repository is a curated, distilled, English-translated index of 136 of his public X posts, created **with his permission** for educational reference. Every principle links back to its original post, and it reproduces distilled principles rather than his full posts verbatim.\n\n## License\n\nSource-available under custom terms — **attribution required, no gambling/betting/casino use**. See [LICENSE](LICENSE). The underlying ideas remain the author's.\n",
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