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 wozniakpl/claude-chimes/plugin install claude-chimesWrote 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/wozniakpl/claude-chimes/chime-volume)<a href="https://agentmods.dev/commands/wozniakpl/claude-chimes/chime-volume"><img src="https://agentmods.dev/badge/commands/wozniakpl/claude-chimes/chime-volume/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/wozniakpl/claude-chimes/chime-volume"><img src="https://agentmods.dev/badge/commands/wozniakpl/claude-chimes/chime-volume.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 | $0.00013 | $0.00237 |
| Opus 5 | $0.00006 | $0.00118 |
| Sonnet 5 | $0.00003 | $0.00047 |
| Haiku 4.5 | $0.00001 | $0.00024 |
Grade A, and why
chime-volume scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Manage the global chime volume. The setting lives in ~/.claude/chimes.json and
applies to every Claude Code session on this machine.
Requested volume: "$ARGUMENTS"
Do exactly one of the following, then report the command's output to the user in
one short line. Do not edit ~/.claude/chimes.json yourself — the script owns
that file, including validation, clamping and atomic writes.
-
If
$ARGUMENTSis empty, run:node ${CLAUDE_PLUGIN_ROOT}/hooks/play_chime.js --get-volume -
Otherwise run, with
$ARGUMENTSas the value:node ${CLAUDE_PLUGIN_ROOT}/hooks/play_chime.js --set-volume $ARGUMENTSThe script plays a preview chime at the new volume, so tell the user to listen. If it exits non-zero, show its error verbatim rather than retrying with a different value.
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 · 27 lines · 13 tokens per session scan A f67d4714328b
chime-volume is a command published in the GitHub repository wozniakpl/claude-chimes (2 stars, last pushed yesterday), licensed MIT. It adds 13 tokens to every session and 237 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.
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