Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/termio-sh/termionpx agentmods add skills/termio-sh/termio/macos-rebuild-devWrote 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/termio-sh/termio/macos-rebuild-dev)<a href="https://agentmods.dev/skills/termio-sh/termio/macos-rebuild-dev"><img src="https://agentmods.dev/badge/skills/termio-sh/termio/macos-rebuild-dev/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/termio-sh/termio/macos-rebuild-dev"><img src="https://agentmods.dev/badge/skills/termio-sh/termio/macos-rebuild-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00062 | $0.01967 |
| Opus 5.5 | $0.00025 | $0.00787 |
| Sonnet 5.5 | $0.00012 | $0.00393 |
| Haiku 4.5 | $0.00006 | $0.00197 |
Grade A, and why
macos-rebuild-dev 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 1mo 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Rebuild App (local development)
Kill the running dev build, rebuild it as the isolated termio-dev.app bundle,
and relaunch — so every rebuild reflects the current Dock icon and, crucially, does
not disturb an installed release build you use daily.
The dev channel
termio ships a TERMIO_CHANNEL=dev build that is a fully separate app from the
release one, so both can run at the same time:
| release | dev (this skill) | |
|---|---|---|
| Bundle | termio.app (usually /Applications) |
termio-dev.app (repo root) |
| Bundle id | sh.termio.app |
sh.termio.app.dev |
| State + sockets | ~/Library/Application Support/termio |
…/termio-dev |
| User config | ~/.termio |
~/.termio-dev |
| Daemon socket | $TMPDIR/termiod-<uid> |
…-dev |
| Daemon launchd job | sh.termio.termiod |
sh.termio.termiod.dev |
| Companion port | 8787 | 8788 |
| CLI on PATH | termio |
termio-dev |
| Sparkle auto-update | on | no update feed (dev never self-updates) |
All of this falls out of the .dev bundle-id suffix via Sources/termio/Companion/AppChannel.swift
(paths + port) and scripts/build-app.sh (id, name, SUFeedURL deletion, CLI rebind).
Sparkle.framework itself is embedded on both channels — the binary links it either
way — so a dev bundle still carries it; it just has nothing to check.
termio is a plain SwiftPM executable (Package.swift → executableTarget named
termio); swift build alone produces a bare binary with no Dock icon. So this
skill builds the real bundle via scripts/build-app.sh. For a dev build the script
auto-picks a real codesigning identity from your own keychain (any "Apple
Development" / "Developer ID Application" cert — a free Apple ID gives you one) so the
dev app can post macOS notifications; usernoted rejects an ad-hoc signature outright,
so an unsigned dev build can never banner. A contributor with no signing cert
falls back to ad-hoc automatically — the build still succeeds, they just don't get
notifications. Set SIGN_IDENTITY=… to force a specific one. The app runs
unsandboxed with .exec PTYs — see CLAUDE.md. The icon is packaging/icon-static.svg,
rasterized to packaging/AppIcon.png by scripts/render-icon.sh (needs headless
Chrome). Note: dev and release currently share the same icon art and differ only by
name ("termio dev") — a tinted dev icon is a possible follow-up.
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.
- 1mo ago Changed · +26 lines 83581cc1cf77
- 1mo ago Changed · +2 lines 57d4ddbc48fd
- 1mo ago First seen · 118 lines · 62 tokens per session scan A 6b0526e89afa
macos-rebuild-dev is a skill published in the GitHub repository termio-sh/termio (562 stars, last pushed today), licensed MIT. It adds 62 tokens to every session and 1,967 once invoked, about $0.0002 per session on Opus 5.5. 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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