Borrowing it
Nothing to install: this file belongs to royashbrook/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/royashbrook/hush/main/AGENTS.mdgit clone --depth 1 https://github.com/royashbrook/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/royashbrook/hush/agents-md)<a href="https://agentmods.dev/instructions/royashbrook/hush/agents-md"><img src="https://agentmods.dev/badge/instructions/royashbrook/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/royashbrook/hush/agents-md"><img src="https://agentmods.dev/badge/instructions/royashbrook/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 | $0.00410 | $0.00410 |
| Opus 5.5 | $0.00164 | $0.00164 |
| Sonnet 5.5 | $0.00082 | $0.00082 |
| Haiku 4.5 | $0.00041 | $0.00041 |
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 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.
What it actually says
AGENTS.md, for any agent, not just one tool
You were probably pointed here as "use the hush skill." This file is the agent-agnostic entry point;
the full playbook is SKILL.md.
what hush is (one line)
A secret store you operate so the user never has to paste a secret into the chat: get a value once into the OS keychain, then inject it into the already-authed CLIs you're running as the user, forever, never printed, never written to the repo.
install (any agent)
hush is a single self-contained bash script. Get it on the box and make it executable:
git clone https://github.com/royashbrook/hush
chmod +x hush/hush
Then either put hush/hush on your PATH, or move it into wherever your agent loads its
tools/skills. That's all the install there is, no build, no deps beyond your OS secret backend
(macOS Keychain / Linux secret-tool / Windows DPAPI, all auto-detected).
Tool-specific convenience:
- Claude Code, clone into
~/.claude/skills/hush(whole session) or./.claude/skills/hush(one project) and it auto-loads as a skill. - Anything else, PATH or your tool's plugin/skill directory works the same; hush is just a script.
then read SKILL.md
SKILL.md is the contract and the playbook: the two add-paths (hush set pops a hidden
dialog for a value the user holds; hush mint generates a random one), injecting with hush run /
hush pipe, adopting hush in an existing repo, and the one hard rule, you never see the
plaintext, and there is no get. Follow it directly.
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 First seen · 36 lines · 410 tokens per session scan A 93d7194c674f
hush AGENTS.md is an instructions file published in the GitHub repository royashbrook/hush (21 stars, last pushed 1mo ago), licensed MIT. It adds 410 tokens to every session, about $0.0016 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.