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

guidance skillA

guidance is agent-read markdown (skill) from testdouble/han: Authoritative guidance for building Claude Code skills, agents, and plugins, plus init and update steps that install and refresh the plugin-building skills in the current repository. Use when you need the rules or best practices for a skill, agent, hook, or plugin — designing, reviewing, hardening, or checking one against the guidance. Run with `init` to vendor the guidance, skill-builder, and agent-builder skills into the current repository (so they run with no dependency on this plugin) plus a.

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/guidance@git:20260818.55bdb1d
Exact content
mdr add testdouble/han/guidance@sha256:5630bafba41489f8

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_7p7cfhz7zlnf6ria.svg)](https://markdownregistry.com/a/art_7p7cfhz7zlnf6ria)

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Versions

versioncommittedcommitsizeaudit
git:20260818.55bdb1d latest2026-08-18 55bdb1d 7,414 BA view · diff
git:20260731.e79299f2026-07-31 e79299f 7,304 BA view · diff
git:20260731.59398fc2026-07-31 59398fc 7,509 BA view · diff
git:20260730.78dc4f82026-07-30 78dc4f8 7,462 BA view · diff
git:20260730.e86a73d2026-07-30 e86a73d 7,282 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 (7414 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_7p7cfhz7zlnf6ria
GET https://markdownregistry.com/api/v1/resolve?ref=testdouble/han/guidance
GET https://markdownregistry.com/api/v1/blob/5630bafba41489f82660d97739973896f9a58c4d2410ebaaf13e066d890d95f4

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