Borrowing it
Nothing to install: this file belongs to waleedkhanbaloch/claude-code-safety-net. 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/waleedkhanbaloch/claude-code-safety-net/main/CLAUDE.mdgit clone --depth 1 https://github.com/waleedkhanbaloch/claude-code-safety-netWrote 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/waleedkhanbaloch/claude-code-safety-net/claude-md)<a href="https://agentmods.dev/instructions/waleedkhanbaloch/claude-code-safety-net/claude-md"><img src="https://agentmods.dev/badge/instructions/waleedkhanbaloch/claude-code-safety-net/claude-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/waleedkhanbaloch/claude-code-safety-net/claude-md"><img src="https://agentmods.dev/badge/instructions/waleedkhanbaloch/claude-code-safety-net/claude-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 | $0.01188 | $0.01188 |
| Opus 5 | $0.00594 | $0.00594 |
| Sonnet 5 | $0.00238 | $0.00238 |
| Haiku 4.5 | $0.00119 | $0.00119 |
Grade C, and why
claude-code-safety-net CLAUDE.md scanned grade C 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 9d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
A Claude Code and OpenCode plugin that blocks destructive git and filesystem commands before execution. It works as a PreToolUse hook that intercepts Bash commands and denies dangerous operations like `git reset --hard`, How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
A Claude Code and OpenCode plugin that blocks destructive git and filesystem commands before execution. It works as a PreToolUse hook that intercepts Bash commands and denies dangerous operations like git reset --hard, rm -rf, and git checkout -- <files>.
Commands
- Setup:
bun install - All checks:
bun run check(runs lint, typecheck, knip, ast-grep scan, tests) - Single test:
bun test tests/file.test.ts - Lint:
bun run lint(uses Biome) - Type check:
bun run typecheck - Dead code:
bun run knip - AST scan:
bun run sg:scan - Build:
bun run build
Architecture
The hook receives JSON input on stdin containing tool_name and tool_input. For Bash tools, it analyzes the command and outputs JSON with permissionDecision: "deny" to block dangerous operations.
Entry points:
src/bin/cc-safety-net.ts— Claude Code CLI (reads stdin JSON)src/index.ts— OpenCode plugin export
Core analysis flow:
cc-safety-net.ts:main()parses JSON input, extracts commandanalyze.ts:analyzeCommand()splits command on shell operators (;,&&,|, etc.)analyzeSegment()tokenizes each segment, strips wrappers (sudo, env), identifies the command- Dispatches to
rules-git.ts:analyzeGit()orrules-rm.ts:analyzeRm()based on command - Checks custom rules via
rules-custom.ts:checkCustomRules()if configured
Key modules (src/core/):
shell.ts: Shell parsing (splitShellCommands,shlexSplit,stripWrappers,shortOpts)rules-git.ts: Git subcommand analysis (checkout, restore, reset, clean, push, branch, stash)rules-rm.ts: rm analysis (allows rm -rf within cwd except when cwd is $HOME; temp paths always allowed; strict mode blocks non-temp)config.ts: Config loading, validation, merging (user~/.cc-safety-net/config.json+ project.safety-net.json)rules-custom.ts: Custom rule matching (checkCustomRules())audit.ts: Audit logging for blocked commandsverify-config.ts: Config validator
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.
- 9d ago First seen · 95 lines · 1,188 tokens per session scan C 4c9ef49e378a
claude-code-safety-net CLAUDE.md is an instructions file published in the GitHub repository waleedkhanbaloch/claude-code-safety-net (2 stars, last pushed yesterday), licensed MIT. It adds 1,188 tokens to every session, about $0.0059 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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