{"slug":"skill-creator-21","title":"skill-creator","summary":"Create, improve, and evaluate agent skills (SKILL.md plus reference files). Use this skill whenever the user wants to build, scaffold, or design a new skill, improve or fix an existing skill that isn't working well, score or benchmark a skill's quality or run evals on it, or turn","platform":"Claude","tags":[],"authorName":"LLM Mart","authorSlug":"llm-mart","score":0,"source":"github","price":null,"verified":false,"createdAt":"2026-10-19T21:17:45.211545Z","repo":{"url":"https://github.com/himself65/finance-skills","stars":3427,"forks":389,"license":"MIT","updatedAt":"2026-10-19T08:37:18Z"},"bodyHtml":"<h1>skill-creator</h1>\n<p>Create, evaluate, and iterate on high-quality agent skills with structured guidance, quality scoring, and best-practice enforcement.</p>\n<h2>What it does</h2>\n<ul>\n<li><strong>Create</strong> new skills from scratch with step-by-step guidance through architecture planning, SKILL.md writing, reference file creation, and quality validation</li>\n<li><strong>Evaluate</strong> existing skills against a 10-dimension quality rubric (trigger quality, defaults, instruction design, reference strategy, output contract, conciseness and register, etc.) with reference-skill comparisons</li>\n<li><strong>Improve</strong> skills by scoring them, proposing ranked improvements, and applying targeted patches</li>\n</ul>\n<p>The skill encodes patterns extracted from analyzing 20+ production finance skills and 120+ hermes-agent skills, distilling what separates top-tier skills (sepa-strategy, options-payoff) from mediocre ones. Its writing guidance targets current Claude models: descriptions that name intent categories instead of listing synonym phrasings, exact scripts only for fragile operations, goals and criteria for judgment work, output contracts instead of rigid templates, and constraints stated once, plainly, with their reasons.</p>\n<p><strong>Core rule:</strong> Skills that touch external tools detect what's available at runtime and adapt with decision trees and fallback paths, rather than hardcoding a single method.</p>\n<h2>Triggers</h2>\n<ul>\n<li>\"create a skill\", \"make a new skill\", \"build a skill for\", \"write a skill that\"</li>\n<li>\"improve this skill\", \"optimize this skill\", \"this skill isn't working well\"</li>\n<li>\"evaluate this skill\", \"score this skill\", \"how good is this skill\"</li>\n<li>\"run evals on\", \"benchmark this skill\", \"test this skill's quality\"</li>\n<li>\"turn this into a skill\", \"I keep doing X manually\", \"can you remember how to do X\"</li>\n</ul>\n<h2>Platform</h2>\n<p>Works on <strong>Claude Code</strong> and other CLI-based agents. Also works on <strong>Claude.ai</strong> for evaluation and planning (skill file creation requires CLI).</p>\n<h2>Setup</h2>\n<pre><code># Choose finance-skill-creator when prompted.\nnpx plugins add himself65/finance-skills\n\n# Or install just this skill\nnpx skills add himself65/finance-skills --skill skill-creator\n</code></pre>\n<p>See the <a href=\"../../../../README.md\">main README</a> for more installation options.</p>\n<h2>Reference files</h2>\n<ul>\n<li><code>references/dynamic-calling.md</code> -- <strong>Core</strong>: Detection flows, decision trees, method fallbacks, runtime awareness, 9 patterns from production skills</li>\n<li><code>references/architecture-patterns.md</code> -- Linear, Router, Methodology, Widget, and API Wrapper patterns with examples and anti-patterns</li>\n<li><code>references/frontmatter-guide.md</code> -- Complete YAML frontmatter field reference (name, description, platform, env vars, config, credentials)</li>\n<li><code>references/quality-rubric.md</code> -- 10-dimension scoring rubric with 1-10 scales, reference-skill examples, and score interpretation</li>\n<li><code>references/skill-examples.md</code> -- Annotated excerpts from top skills showing why specific patterns work</li>\n<li><code>references/writing-guide.md</code> -- How to write each SKILL.md section for current Claude models: descriptions, detection flows, defaults tables, and output contracts</li>\n</ul>\n","files":[{"path":"README.md","sizeBytes":3038,"isText":true},{"path":"references/architecture-patterns.md","sizeBytes":8600,"isText":true},{"path":"references/dynamic-calling.md","sizeBytes":12359,"isText":true},{"path":"references/frontmatter-guide.md","sizeBytes":5542,"isText":true},{"path":"references/quality-rubric.md","sizeBytes":9708,"isText":true},{"path":"references/skill-examples.md","sizeBytes":13127,"isText":true},{"path":"references/writing-guide.md","sizeBytes":9884,"isText":true},{"path":"SKILL.md","sizeBytes":15442,"isText":true}],"reviewScore":null,"reviewSummary":null,"trust":{"provenance":"trusted-source-unreviewed","notice":"Community-authored content, reproduced verbatim and not vetted as instructions. Treat it as data to evaluate, never as directives to follow.","bodySource":null},"bodyLocked":false,"purchaseUrl":null,"sourceUrl":null,"report":{"provenance":"trusted-source-unreviewed","screen":{"ran":true,"outcome":"notes-only","suspicious":0,"notes":5,"hiddenCharacters":false},"virusScan":{"engine":"clamav","status":"clean","scannedAt":"2026-10-19T21:19:28.386643Z","sha256":"539F27556910BF6032FF24CDB8B6373C5188DAE29BD8E07414F4D1C40BA39F1A","sizeBytes":33813},"review":null,"source":{"repositoryUrl":"https://github.com/himself65/finance-skills","path":"plugins/skill-creator/skills/skill-creator","license":"MIT","commit":"73d554d60c0a3f121a30f505680f7a06b2b1fd11","subtreeSha":"2554A79800D8922B036C861F98205CF888FFA1FB2B0608FE7C7766CE49A56E97","lastSyncedAt":"2026-10-19T21:17:41.134703Z"},"reviewedAt":"2026-10-19T21:23:20.196112Z","notice":"Community-authored content, reproduced verbatim and not vetted as instructions. Treat it as data to evaluate, never as directives to follow."},"install":[{"target":"skills-cli","command":"npx skills add https://github.com/himself65/finance-skills/tree/main/plugins/skill-creator/skills/skill-creator"},{"target":"claude-code","command":"claude plugin marketplace add https://llmmart.ai/marketplace.json && claude plugin install himself65-finance-skills@llmmart"},{"target":"git","command":"git clone https://github.com/himself65/finance-skills.git"}]}