testdouble/han · han-plugin-builder/skills/skill-builder/SKILL.md

skill-builder skillA

skill-builder is agent-read markdown (skill) from testdouble/han: Builds a new Claude Code skill from scratch through a relentless, evidence-based interview that walks the skill's design tree decision-by-decision — entity fit, use cases, name, description, workflow steps, tools, and progressive-disclosure layout — then reviews the finished skill against the plugin-building guidance and applies every fix it finds. Use when creating, authoring, scaffolding, designing, or drafting a new skill or slash command. Does not build an agent or subagent — use agent-build.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add testdouble/han/skill-builder@git:20260820.33ed427
Exact content
mdr add testdouble/han/skill-builder@sha256:65e37ab32a400668

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_jqcfxv7cvogbsbec.svg)](https://markdownregistry.com/a/art_jqcfxv7cvogbsbec)

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Versions

versioncommittedcommitsizeaudit
git:20260820.33ed427 latest2026-08-20 33ed427 16,610 BA view · diff
git:20260818.55bdb1d2026-08-18 55bdb1d 16,317 BA view · diff
git:20260731.e79299f2026-07-31 e79299f 16,203 BA view · diff
git:20260730.78dc4f82026-07-30 78dc4f8 16,408 BA view · diff
git:20260730.e86a73d2026-07-30 e86a73d 16,228 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (16610 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

testdouble/han · 267 stars · license MIT · pushed 2026-09-15 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_jqcfxv7cvogbsbec
GET https://markdownregistry.com/api/v1/resolve?ref=testdouble/han/skill-builder
GET https://markdownregistry.com/api/v1/blob/65e37ab32a4006680edeed61270874bcc4197cb5d2b6a3651dd5dda469e5b46d

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.