Yeeth Claw

Supply chain security hooks for Claude Code. Intercepts npm, pip, yarn, pnpm, and cargo install commands before execution and checks each package for supply chain risk signals: package age (new packages flagged/blocked), typosquat detection via Levenshtein distance against ~100 high-value targets per ecosystem, and install script presence. Optionally submits blocked packages to the Argus API for full static analysis.

Claude Code hooks for supply chain security. Intercepts package installation commands and flags suspicious packages before Claude executes them.

Hooks

OpenClaw

PreToolUse hook that watches npm install, pip install, yarn add, pnpm add, and cargo add commands. For each package it checks:

1. Package age — packages published < 30 days ago are flagged; < 7 days triggers a block
2. Typosquat detection — Levenshtein distance against ~100 high-value targets per ecosystem (npm, PyPI, crates.io)
3. Install scripts — postinstall hooks on flagged packages are noted as an additional risk signal

Risk tiers:

Tier	Condition	Exit code
WARN	Age < 30d or typosquat score ≥ 0.65	1 (non-blocking)
BLOCK	Age < 7d and typosquat hit, or score ≥ 0.85	2 (blocks install)
ARGUS	Any BLOCK + Argus API configured	2 + submits for full analysis

Installation

bash

git clone https://github.com/yeeth-security/yeeth-claw.git
cd yeeth-claw/hooks/openclaw
bash install.sh

The install script copies the hook to ~/.claude/hooks/openclaw/ and merges the Claude Code settings if jq is available.

Restart Claude Code after installation for the hook to take effect.

Argus Integration

To enable full package analysis via the Argus API:

bash

export OPENCLAW_ARGUS_URL=https://app.yeethsecurity.com
export OPENCLAW_ARGUS_KEY=<your-api-key>

When both are set, any BLOCK-tier package is submitted to Argus for full static analysis and the job URL is included in the block message.

Requirements

• Python 3.8+
• No third-party dependencies (stdlib only)

Claude Code settings snippet

json

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "python3 ~/.claude/hooks/openclaw/hook.py"
          }
        ]
      }
    ]
  }
}