Simplify recently changed or explicitly scoped code while preserving observable behavior. Use when the user asks to reduce complexity, remove duplication, clarify an implementation, or explicitly asks for a dedicated code-simplifier subagent to make bounded code changes.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Code Simplifier
Delegate one bounded simplification task to a native subagent when available.
Do not invoke `codex-subagent` or start a nested `codex exec` process.
## Workflow
1. Read repository rules, inspect the current changes, and define an explicit
write set. Do not broaden the scope beyond recently changed or user-named
files.
2. Read `references/role.md` completely.
3. Spawn a native subagent with the target root, authorized write set, behavior
constraints, existing tests, and required validation. Mark it as the
dedicated simplifier child and tell it not to delegate again.
4. Let the child inherit the current model, policy, sandbox, and approval
boundaries. Require it to edit only its scoped workspace and list every
changed file.
5. Review the returned patch, run proportional validation, integrate only
behavior-preserving changes, and close the child.
## Native Child Execution
If the current session was explicitly spawned as the dedicated native child for
this role, execute `references/role.md` directly in the scoped workspace, do not
spawn a descendant, and report `executed_as_native_child`.
## Fallback
…
The line at the top of this page pins the label git:20261020.62a8ddd, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_uobdpwlgcz6tyolh
GET https://markdownregistry.com/api/v1/resolve?ref=alamoooooooo/alamo-skills/code-simplifier
GET https://markdownregistry.com/api/v1/blob/463c7e7e331531fc18b94c494fdbec0d9a11350cfb8096a596168c19761a062a
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