plan-a-change skillA
plan-a-change is agent-read markdown (skill) from testdouble/han: Plans an architecture-driven change to code that already exists: module boundaries, type responsibilities, layering, coupling, and the public surface a revision moves. Produces a buildable change plan that names the types, modules, and methods involved and records the surface delta each change makes. Use when the user wants to plan, scope, or sequence a restructure, extraction, split, consolidation, responsibility shift, or API revision of existing code, including "these responsibilities are wro.
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
mdr add testdouble/han/plan-a-change@git:20260909.dde8d4amdr add testdouble/han/plan-a-change@sha256:204f7f335c3b74adPin 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.
[](https://markdownregistry.com/a/art_h2htnut7ba3f2ej7)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260909.dde8d4a latest | 2026-09-09 | dde8d4a | 26,218 B | A | view · diff |
| git:20260909.f586d00 | 2026-09-09 | f586d00 | 25,369 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (26218 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
testdouble/han · 267 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h2htnut7ba3f2ej7 GET https://markdownregistry.com/api/v1/resolve?ref=testdouble/han/plan-a-change GET https://markdownregistry.com/api/v1/blob/204f7f335c3b74ad2a3749f12aa0874d70303cfffb987544d1ba5be36e174fb1
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