Borrowing it
Nothing to install: this file belongs to CaesiumY/dding-dong. 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/CaesiumY/dding-dong/main/CLAUDE.mdgit clone --depth 1 https://github.com/CaesiumY/dding-dongWrote 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/instructions/caesiumy/dding-dong/claude-md)<a href="https://agentmods.dev/instructions/caesiumy/dding-dong/claude-md"><img src="https://agentmods.dev/badge/instructions/caesiumy/dding-dong/claude-md.svg" alt="Measured on agentmods" 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 | $0.01666 | $0.01666 |
| Opus 5 | $0.00833 | $0.00833 |
| Sonnet 5 | $0.00333 | $0.00333 |
| Haiku 4.5 | $0.00167 | $0.00167 |
Grade A, and why
dding-dong CLAUDE.md scanned grade A with 1 finding 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 6d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- **No npm dependencies**: Only Node.js built-in modules (`node:fs`, `node:path`, `node:child_process`, `node:os`, `node:url`). How it starts
The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
dding-dong
Claude Code notification plugin. Plays sounds and sends OS notifications on task completion, errors, and input requests. Zero npm dependencies — uses only Node.js built-in modules.
Development Commands
# Test notifications (cycles through all event types)
node scripts/notify.mjs test
# Regenerate default sound pack WAV files
node scripts/generate-sounds.mjs
# Detect platform, audio player, and notifier
node scripts/setup-wizard.mjs detect
# Validate config files (JSON parsing, required keys, sound pack existence)
node scripts/setup-wizard.mjs validate
# Sound pack management (discover, validate, create, clone, apply)
node scripts/pack-wizard.mjs discover
# Version sync (plugin.json → marketplace.json)
node scripts/sync-version.mjs sync
node scripts/sync-version.mjs verify
node scripts/sync-version.mjs bump patch # or minor, major
# Release (creates git tag + pushes → GitHub Actions creates release)
node scripts/release.mjs # Create git tag and push
node scripts/release.mjs --dry-run # Preview without creating tag
# Website (pnpm required — do NOT use npm/yarn)
cd website && pnpm install # Install dependencies
cd website && pnpm dev # Dev server (auto-copies sound files)
cd website && pnpm build # Production build
Design Rules
- Simplicity First: Make every change as simple as possible. Impact minimal code.
- Root cause fixes: Find root causes. No temporary fixes. Senior developer standards.
- Minimal impact: Changes should only touch what's necessary. Avoid introducing bugs.
- Stop hook MUST respond:
stop.mjsmust write{}(empty JSON object) to stdout. Missing this halts Claude execution. - Always exit(0) on error: Notification failure must never block Claude. All hook catch blocks call
process.exit(0). - detached + unref: Audio processes use
spawn(..., { detached: true, stdio: 'ignore' }).unref()to complete within the 5-second hook timeout. - ESM only: All scripts use
.mjsextension withimport/exportsyntax. - No npm dependencies: Only Node.js built-in modules (
node:fs,node:path,node:child_process,node:os,node:url).
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.
- 6d ago First seen · 114 lines · 1,666 tokens per session scan A 5a50e7118eec
dding-dong CLAUDE.md is an instructions file published in the GitHub repository CaesiumY/dding-dong (2 stars, last pushed 6mo ago), licensed MIT. It adds 1,666 tokens to every session, about $0.0083 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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