worktree-first SKILL.md skillA

worktree-first from cercano-ai/cercano is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add cercano-ai/cercano/worktree-first@git:20261022.42958e0

Pins git:20261022.42958e0 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: cercano-ai/cercano
Path: .claude/skills/worktree-first/SKILL.md
Versions recorded: 2
Latest version: git:20261022.42958e0, committed Oct 22, 2026
First version recorded: Jul 9, 2026
Size: 6,711 bytes
Repository stars: 11
License: Apache-2.0

Use a separate worktree for substantial work; keep tiny, explicit current-branch edits lightweight and safe.

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

# Worktree-First Protocol

## When This Applies

Any time you're about to decide where a change should happen.

Use a separate worktree for substantial work: new features, risky fixes,
logic changes, multi-file edits, or anything likely to take more than a
quick pass.

For tiny, explicit edits — a typo, label rename, comment fix, or one-line
copy tweak — it is okay to stay on the current branch when that is clearly
what the user wants. If it is not clear, ask: "Do you want this done here
or in a separate workspace?"

## The Rule

**Match the workspace to the risk.** The root worktree (the top-level
repository directory) is a shared physical checkout — multiple concurrent
sessions read from it and write to it. For substantial work, create an
isolated worktree. For tiny current-branch work, do not scoop up unrelated
local changes: checkpoint only the explicit paths you touched.

## Steps

1. **Use the `git_worktree` tool.** Not raw `git checkout -b`, not
   `git worktree add` from the shell — the tool wraps both and adds the
   safety checks (clean baseline, target dir git-ignored, trunk
   resolution). Pass:
   - `path`: `../<repo-name>-<feature-slug>` — a **sibling**
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add cercano-ai/cercano/worktree-first@sha256:91e5b79bf630fbd7

The line at the top of this page pins the label git:20261022.42958e0, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_33vo7pimc4dwzqxx.svg)](https://markdownregistry.com/a/art_33vo7pimc4dwzqxx)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jul 9, 2026 and Oct 22, 2026, about one every 105 days.

version	committed	commit	size	audit
git:20261022.42958e0 latest	2026-10-22	42958e0	6,711 B	A	view · diff
git:20260709.887cd3f	2026-07-09	887cd3f	4,375 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (6711 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

cercano-ai/cercano · 11 stars · license Apache-2.0 · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_33vo7pimc4dwzqxx
GET https://markdownregistry.com/api/v1/resolve?ref=cercano-ai/cercano/worktree-first
GET https://markdownregistry.com/api/v1/blob/91e5b79bf630fbd7a169c7b657602c72bc0a78c51241196095c146f67de0ae70

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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