{"product_id":"master-the-plumb-line-method-ai-skill-for-codex-claude","title":"Master the Plumb-Line Method: AI Skill for Codex \u0026 Claude","description":"\u003ch3\u003eMaster the Plumb-Line Method: AI Skill for Codex \u0026amp; Claude\u003c\/h3\u003e\n\n\u003cp\u003eThe \"Master the Plumb-Line Method\" skill equips builders with the discipline of epistemic honesty through a structured educational guide. It instructs users in the plumb-line method, focusing on its thesis, nine portable principles, maturity vocabulary, and a straightforward one-line test. This AI skill is designed to impart pure knowledge without performing any automated actions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this skill does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReads the principles document from \u003ccode\u003ereference\/portable-principles.md\u003c\/code\u003e.\u003c\/li\u003e\n  \u003cli\u003eIntroduces the thesis and the spine to the builder.\u003c\/li\u003e\n  \u003cli\u003eGuides users through the nine principles, prioritising relevance to current tasks.\u003c\/li\u003e\n  \u003cli\u003eConcludes with the one-line test for an immediate gut-check on understanding.\u003c\/li\u003e\n  \u003cli\u003ePresents the next steps to ensure users know how to start applying the method practically.\u003c\/li\u003e\n  \u003cli\u003eMentions the availability of the \u003ccode\u003eplumb-line-provenance\u003c\/code\u003e library for enforcing two specific principles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho it is for\u003c\/h3\u003e\n\u003cp\u003eThis skill is intended for developers and teams using AI coding agents like Codex, Claude Code, and Cursor. It particularly benefits those working in environments focused on enhancing epistemic integrity within AI projects.\u003c\/p\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eA developer needing a refresher on the plumb-line method for maintaining transparency in AI processes.\u003c\/li\u003e\n  \u003cli\u003eTeams integrating epistemic honesty into their software development lifecycle.\u003c\/li\u003e\n  \u003cli\u003eProjects requiring a structured approach to ensure consistent understanding and application of the plumb-line principles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with AI coding agents: Codex, Claude Code, and Cursor.\u003c\/li\u003e\n  \u003cli\u003eUtilises \u003ccode\u003eai-tooling\u003c\/code\u003e and \u003ccode\u003eaiapplication\u003c\/code\u003e for effective knowledge transfer.\u003c\/li\u003e\n  \u003cli\u003eIntegration with \u003ccode\u003eplumb-line-provenance\u003c\/code\u003e, a zero-dependency JS and Python library, when teaching applicable principles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- mcpcart:static-blocks:start --\u003e\n\u003chr\u003e\n\u003ch3\u003eSource \u0026amp; Licence\u003c\/h3\u003e\n\u003cp\u003eThis package is built on open-source work published by \u003cstrong\u003eslopstopper\u003c\/strong\u003e (\u003ca href=\"https:\/\/github.com\/slopstopper\/plumb-line\" rel=\"nofollow noopener\" target=\"_blank\"\u003eslopstopper\/plumb-line\u003c\/a\u003e) and distributed under \u003cstrong\u003eApache-2.0\u003c\/strong\u003e. The original licence text and copyright notice are included in your download.\u003c\/p\u003e\n\u003cp\u003ePersonal and commercial use, modification and redistribution are permitted under the Apache License 2.0, which also includes an express patent grant. Attribution and any NOTICE file must be retained.\u003c\/p\u003e\n\u003cp\u003eYour purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.\u003c\/p\u003e\n\u003ch3\u003eDelivery \u0026amp; Support\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery:\u003c\/strong\u003e instant — a secure download link is emailed to you as soon as payment is confirmed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e ZIP archive containing the skill files, documentation and the original licence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport:\u003c\/strong\u003e \u003ca href=\"mailto:support@mcpcart.com\"\u003esupport@mcpcart.com\u003c\/a\u003e — we aim to reply within 2 business days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdates:\u003c\/strong\u003e updates are included only where stated on this page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRefunds\u003c\/h3\u003e\n\u003cp\u003eThis is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.\u003c\/p\u003e\n\u003cp style=\"font-size:0.85em;color:#666;\"\u003eClaude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.\u003c\/p\u003e\n\u003c!-- mcpcart:static-blocks:end --\u003e","brand":"MCP Cart","offers":[{"title":"Default Title","offer_id":52830254137655,"sku":"MCP-SLOPSTOPPER-PLUMB-LINE-PLUMB-LINE-METHOD","price":28.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3950\/4951\/files\/AFPCWxQn9pkqnn51SXSyF_7453ac959ab8402db12b623711c01123.jpg?v=1786611699","url":"https:\/\/mcpcart.com\/products\/master-the-plumb-line-method-ai-skill-for-codex-claude","provider":"SPF PRO","version":"1.0","type":"link"}