Subwave Control

What it does

When your agent uses it

• First-time setup
• Git pull + rebuilds
• Jingle generation
• Config changes — thats subwave-deploy

Example prompts

• “start subwave”
• “stop subwave”
• “bring up the radio”
• “/subwave-control”

Requirements

• Node.js
• Docker

Workflow steps

6 steps, taken from the step headings in SKILL.md.

1. 1Detect what's running
2. 2Start (dev)
3. 3Start (prod)
4. 4Verify on-air
5. 5Stop (dev)
6. 6Stop (prod)

What it can do on your machine

Read from SKILL.md and the folder at commit fc34e8a. 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:

  • docker
  • npm
  • git
  • curl

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

• Network

  No URLs in SKILL.md. Its commands use docker, npm, git and curl, 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

Subwave Control loads about 1.6k tokens when it runs. Until then it costs about 212 tokens; SKILL.md has 680 words of instructions outside code blocks.

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

~212

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:75

  te goes to `<repo>/state` unless `docker/.env` (or the environment) sets `STATE_DIR` — compose picks that up on its own,

• NoteMentions a .env fileSKILL.md:124

  state/icecast-secrets.env`) or the root `.env`

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 perminder-klair/subwave at commit fc34e8a, republished under its MIT licence (© perminder-klair). 680 words, ~1,620 tokens.

name

subwave-control

description

Start or stop the SUB/WAVE radio stack (a personal internet radio station) in dev or production mode — no builds, no rebuilds, no config rendering. Use this skill any time the user wants to "start subwave", "stop subwave", "bring up the radio", "shut down the radio", "boot subwave in dev/prod", "turn subwave on/off", "is subwave running?", or otherwise just power the stack up or down. Detects which compose file (dev vs prod) is already running and matches it; if nothing is running, asks dev or prod. Dev mode also launches the Next.js web dev server on :7700 in the background. Always verifies the stream is on-air after a start. Do NOT use this skill for first-time setup, `git pull` + rebuilds, jingle generation, or config changes — that's `subwave-deploy`. If the user asks for any of those, hand off rather than starting.

REPO=$(git -C "<this skill's base directory>" rev-parse --show-toplevel)

cd "$REPO"
RUNNING_DEV=$(docker compose -f docker-compose.dev.yml ps -q 2>/dev/null)
RUNNING_PROD=$(docker compose -f docker-compose.yml ps -q 2>/dev/null)
WEB_DEV_PID=$(lsof -nP -iTCP:7700 -sTCP:LISTEN -t 2>/dev/null | head -1)

cd "$REPO/docker" && docker compose up -d

cd "$REPO/web" && npm run dev

cd "$REPO"
docker compose -f docker-compose.yml up -d

sleep 5
curl -sf http://localhost:7701/health    # dev — controller exposed directly
# or, in prod, via the Caddy port (read from `docker compose -f docker-compose.yml port caddy 80`)

# Stop the web dev server first (it holds :7700)
WEB_DEV_PID=$(lsof -nP -iTCP:7700 -sTCP:LISTEN -t 2>/dev/null | head -1)
[ -n "$WEB_DEV_PID" ] && kill "$WEB_DEV_PID"
cd "$REPO/docker" && docker compose down

cd "$REPO" && docker compose -f docker-compose.yml down

© perminder-klair, MIT. 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 .claude/skills/subwave-control of perminder-klair/subwave.

Open the folder on GitHubat commit fc34e8a