Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add kubalajiri/claude-squirrel/plugin install squirrelWrote 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/commands/kubalajiri/claude-squirrel/squirrel-bg)<a href="https://agentmods.dev/commands/kubalajiri/claude-squirrel/squirrel-bg"><img src="https://agentmods.dev/badge/commands/kubalajiri/claude-squirrel/squirrel-bg/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/commands/kubalajiri/claude-squirrel/squirrel-bg"><img src="https://agentmods.dev/badge/commands/kubalajiri/claude-squirrel/squirrel-bg.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00024 | $0.00334 |
| Opus 5 | $0.00012 | $0.00167 |
| Sonnet 5 | $0.00005 | $0.00067 |
| Haiku 4.5 | $0.00002 | $0.00033 |
Grade A, and why
squirrel-bg scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Run this exact command with the Bash tool and show the user its output verbatim:
sh "${CLAUDE_PLUGIN_ROOT}/scripts/squirrel.sh" --set-bg "$ARGUMENTS"
/squirrel-bg <colour|off> sets the warn-phase banner colour shown once a session has been
waiting past idleBackgroundAfterSeconds (a clearly visible yellow, #c9a227, by default —
bold white text) — a hazard-banner-style warning, not a subtle tint. /squirrel-bg urgent <colour|off> sets the alarm-phase bar colour that takes over once the wait also passes
alarmAfterSeconds — the same trigger as the loud chip — painting the whole bar in that
colour (strong red, #b3261e, by default) with bold white text. These two phases are really
the first two entries of the full idle-phase ladder (see /squirrel-phases for any phase
beyond these two, or to change text/bold per phase — e.g. --set-phase 30 text=black bold=off). urgent off paints no background at the alarm phase (the loud chip and its text
colour still apply) rather than falling back to the warn-phase colour; /squirrel-bg off
disables all painting outright.
Do not do anything else.
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.
- 8d ago First seen · 23 lines · 0 tokens per session scan A b9be41997fcc
squirrel-bg is a command published in the GitHub repository kubalajiri/claude-squirrel (2 stars, last pushed 14d ago), licensed MIT. It adds 24 tokens to every session and 334 once invoked, about $0.0001 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 2026-08-31.
Other commands, from other repositories
hush
Silence all current and queued speech.
off
Disable narrator voice output.
buddy
Manage BuddyBar pet status, statusline, mode, evolution, prestige, and self-check.
simplify
The over-engineering review: five tags (delete, stdlib, native, yagni, shrink), a mandatory replacement per finding, and a real null result when there is nothing to cut.
git
The pre-finish status: branch, hygiene findings, message checks, workflow lint, template state.
release
Generate changelog, bump version, and create git tag.