Borrowing it
Nothing to install: this file belongs to V-Songbird/hush. 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/V-Songbird/hush/main/AGENTS.mdgit clone --depth 1 https://github.com/V-Songbird/hushWrote 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/v-songbird/hush/agents-md)<a href="https://agentmods.dev/instructions/v-songbird/hush/agents-md"><img src="https://agentmods.dev/badge/instructions/v-songbird/hush/agents-md/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/instructions/v-songbird/hush/agents-md"><img src="https://agentmods.dev/badge/instructions/v-songbird/hush/agents-md.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 | $0.00845 | $0.00845 |
| Opus 5.5 | $0.00338 | $0.00338 |
| Sonnet 5.5 | $0.00169 | $0.00169 |
| Haiku 4.5 | $0.00085 | $0.00085 |
Grade A, and why
hush AGENTS.md 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 16d 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 — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.
hush
hush is a Claude Code plugin that quiets narration, trims tool output and shapes the final answer
around the result. Its hooks and scripts are dependency-free Node.js and run with Node.js 22 or
later; there is no install or build step. This repository is Foundry's hush submodule, ships from
main, and has no Codex package.
Start here
- Before changing a hook or the shipped voice, read how hush works.
- Before changing a switch or the style slot, read settings.
- Before touching a README number, read the benchmark details; every published number belongs to the voice shipped when its batch ran, with
HUSH_WRAP=1. - Before a release, read the changelog and CONTRIBUTING.md.
Rules that outrank everything
- One package on
mainfor Claude Code. Do not add a.codex-plugin/manifest, a Codex hook registration or Codex installation steps unless a Codex port is decided and validated; the README keeps Codex marked as not available. - The version lives in
.claude-plugin/plugin.json; bump it in the release commit. Foundry's Claude catalog pins themaincommit and carries no version for hush. - README results name their host, model, source and date. They come from Claude Code sessions; never present them as Codex results.
Commands
| Command | Purpose | Cost |
|---|---|---|
node --test tests/*.test.js |
The suite | Local temporary fixtures |
node scripts/git-hooks/check-readme-nav.js |
The root README has its nav, and every heading anchor linked from a tracked Markdown file resolves | Local |
claude plugin validate . |
Claude Code package shape | Local |
git config core.hooksPath scripts/git-hooks |
One-time: the pre-commit hook runs the suite and the nav check | Local |
Where things live
| Path | Content |
|---|---|
hooks/ |
The session hooks: compress-tool-output, silence-nudge, precompact-summary, postcompact-rearm, preserve-exit-code, session-end-cleanup, subagent-brief; lib/ holds the gate, the harness, the sidecar store and the transforms |
hooks/style-settings.js |
The message settings: their values, presets and saved file, the CLI /hush:config calls, and the SessionStart hook that sends each moved setting's module |
commands/config.md |
/hush:config: the configurator in the desktop app, or the terminal questions |
widgets/config.html |
The configurator widget and its sample-message preview; its knob list must match hooks/style-settings.js |
modules/ |
One rule per moved setting, <setting>-<value>.md, which replaces the voice rule it names |
output-styles/hush.md |
The shipped voice |
scripts/git-hooks/ |
The commit gates |
tests/ |
The node:test suite, with contract/ and fixtures/ |
docs/knowledge/ |
How it works, settings, benchmark details and the changelog |
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.
- 16d ago Changed · +4 lines · +126 tokens per session f2f09591fae8
- 1mo ago Changed · -2 lines · -95 tokens per session 41d33328c746
- 1mo ago Changed · +34 lines · +638 tokens per session 552f67fb3767
- 1mo ago First seen · 17 lines · 176 tokens per session scan A 56ada5d19691
hush AGENTS.md is an instructions file published in the GitHub repository V-Songbird/hush (54 stars, last pushed 2d ago), licensed MIT. It adds 845 tokens to every session, about $0.0034 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 2026-09-16.
hush AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| hush AGENTS.mdV-Songbird/hush | Instructions file | 54 | 2d ago | MIT | A | 845 | Claude Code, Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |