Subwave is an internet radio station where an AI DJ selects music and speaks between tracks for every listener at once. Listeners can request music in plain language, while operators manage the queue, schedule, DJ personas, and station activity. Its catalogue entries define skills and workflows for operating the station.
Borrowing it
Nothing to install: this file belongs to perminder-klair/subwave. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/perminder-klair/subwave/develop/.claude/skills/subwave-app-ota-update/SKILL.mdgit clone --depth 1 https://github.com/perminder-klair/subwaveWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/perminder-klair/subwave/subwave-app-ota-update)<a href="https://agentmods.dev/skills/perminder-klair/subwave/subwave-app-ota-update"><img src="https://agentmods.dev/badge/skills/perminder-klair/subwave/subwave-app-ota-update/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/perminder-klair/subwave/subwave-app-ota-update"><img src="https://agentmods.dev/badge/skills/perminder-klair/subwave/subwave-app-ota-update.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 60 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium MCP Rug Pull · line 60 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00283 | $0.02544 |
| Opus 5 | $0.00142 | $0.01272 |
| Sonnet 5 | $0.00057 | $0.00509 |
| Haiku 4.5 | $0.00028 | $0.00254 |
Grade A, and why
subwave-app-ota-update scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 198 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SUB/WAVE app — OTA update (EAS Update)
Push a JS/TS-only change to the app binaries already on people's phones,
without building or submitting anything. The app ships expo-updates; an
eas update bundles the current JS + Metro assets and serves them to matching
installs, who pick them up on next launch. Most changes (UI, hooks, copy, logic,
styles) go out this way in ~1 minute instead of a 15-min build + store round-trip.
This skill covers the whole OTA loop: decide if the change is even OTA-eligible, publish it to the right channel, and confirm which installed builds will actually receive it (the question that always comes up — "will my TestFlight build get this?").
The authoritative reference with the full decision table and fingerprint
debugging is app/docs/RELEASE.md. This skill is
the hands-on OTA path; for a binary build read the release skills instead
(see "When you actually need a build" below).
Fixed facts
Derive the repo root; don't hardcode paths. eas.json + app.json live in
app/, and every eas command must run from there.
REPO=$(git -C "<this skill's base directory>" rev-parse --show-toplevel)
APP="$REPO/app" # cd here before any eas command
| Thing | Value |
|---|---|
| EAS project | @pinku1/subwave (Expo account pinku1) |
| Updates URL | https://u.expo.dev/b834b64c-f694-4f45-b3fa-0f2c0a4df5ba (in app.json) |
| Channels | preview (tester builds) and production (TestFlight / Play) |
| Runtime version | fingerprint policy — an OTA only reaches builds whose native fingerprint matches (see below) |
| Apply behaviour | checkAutomatically: ON_LOAD + fallbackToCacheTimeout: 0 — fetches in background, applies on the next cold start |
The one decision: can this go OTA, or does it need a build?
An OTA can only carry JS, TS, and Metro-bundled assets. It cannot carry
native code. EAS enforces this with the fingerprint runtime policy: it hashes
the native inputs, and an update only installs on a binary whose hash matches — so
you physically can't ship mismatched native code, but you also can't sneak a
native change out via OTA.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 198 lines · 283 tokens per session scan A 4b1dee6dfecd
subwave-app-ota-update is a skill published in the GitHub repository perminder-klair/subwave (1,314 stars, last pushed today), licensed MIT. It adds 283 tokens to every session and 2,544 once invoked, about $0.0014 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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