Runnable Worktrees

What it does

When your agent uses it

• Configuring a repo so reviewers can run a builders branch
• Afx dev fails to bind
• A dev process is orphaned holding a port
• Asked why worktree dev uses the same ports as main

Example prompts

• “/runnable-worktrees”

Requirements

• Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 9cd8607. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • pnpm
  • cargo
  • expo
  • turbo

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Runnable Worktrees loads about 1.6k tokens when it runs. Until then it costs about 104 tokens; SKILL.md has 695 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~104

When it runs · the whole SKILL.md, loaded when a task matches

~1.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:26

  relative path. Root `.env` and `.codev/config.json` are *always* symlinked regardless.

• NoteMentions a .env fileSKILL.md:106

  {"worktree": {"symlinks": [".env.local", ".env.development.local", "packages/*/.env", "packages/*/.env.local", "turbo.js

• NoteMentions a .env fileSKILL.md:109

  **npm** — `{"symlinks": [".env.local", ".env.development"], "postSpawn": ["npm ci"], "devCommand": "npm run dev"}`

• NoteMentions a .env fileSKILL.md:111

  **yarn** — `{"symlinks": [".env.local"], "postSpawn": ["yarn install --frozen-lockfile"], "devCommand": "yarn dev"}`

• NoteMentions a .env fileSKILL.md:113

  **bun** — `{"symlinks": [".env.local"], "postSpawn": ["bun install --frozen-lockfile"], "devCommand": "bun dev"}`

• NoteMentions a .env fileSKILL.md:115

  **cargo** — `{"symlinks": [".env"], "postSpawn": [], "devCommand": "cargo run"}`

• NoteMentions a .env fileSKILL.md:117

  **poetry / uv** — `{"symlinks": [".env", ".env.local"], "postSpawn": ["uv sync"], "devCommand": "uv run python -m myapp"

• NoteMentions a .env fileSKILL.md:119

  **go mod** — `{"symlinks": [".env"], "postSpawn": ["go mod download"], "devCommand": "go run ./cmd/server"}`

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from cluesmith/codev at commit 9cd8607, republished under its Apache-2.0 licence (© cluesmith). 695 words, ~1,562 tokens.

name

runnable-worktrees

description

Make builder worktrees runnable — the `.codev/config.json` `worktree` block (symlinks, postSpawn, devCommand), the `afx dev` CLI, VSCode dev controls, and per-stack config recipes. Use when configuring a repo so reviewers can run a builder's branch, when `afx dev` fails to bind or start, when a dev process is orphaned holding a port, or when asked why worktree dev uses the same ports as main.

{
  "worktree": {
    "symlinks":   ["..."],   // globs symlinked from the workspace root into each new worktree
    "postSpawn":  ["..."],   // shell commands run inside each new worktree after createWorktree
    "devCommand": "..."      // consumed by `afx dev <builder-id|main>`
  }
}

afx dev <builder-id>     # start dev in that builder's worktree
afx dev main             # start dev in the MAIN workspace (Codev-managed)
afx dev --stop           # stop the running dev PTY (builder or main)
afx setup <builder-id>   # re-apply symlinks + postSpawn to an existing worktree (idempotent)

lsof -ti :<port> | xargs kill
lsof -ti :3000,:3001,:4000 | xargs kill

{"worktree": {"symlinks": [".env.local", ".env.development.local", "packages/*/.env", "packages/*/.env.local", "turbo.json"], "postSpawn": ["pnpm install --frozen-lockfile"], "devCommand": "pnpm dev"}}

© cluesmith, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .codex/skills/runnable-worktrees of cluesmith/codev.

Open the folder on GitHubat commit 9cd8607