Add AgentGuard - AI agent supply chain security tool

[momenbasel]

Summary

• Adds AgentGuard to the Specialized CLI Tools section under CLI & Terminal Tools.
• AgentGuard is an open-source AI agent supply chain security tool that intercepts package install commands from AI coding agents (Claude Code, OpenAI Codex, GitHub Copilot) and validates them against typosquatting, known malicious packages, and dangerous install patterns before execution.
• It works as a Claude Code hook, standalone CLI, MCP server, or Claude Code skill, making it a natural fit for the vibe coding toolchain.

Why it fits this list

Vibe coding relies heavily on AI agents autonomously installing packages. AgentGuard adds a security layer to that workflow, preventing supply chain attacks without breaking the developer flow. It integrates directly with the tools already listed in this awesome list (Claude Code, Codex CLI, Copilot).

Checklist

• Entry follows the existing table format (Tool | Pricing | Best For | Why It's Awesome)
• Placed in the most relevant section (Specialized CLI Tools)
• Link points to a valid, active GitHub repository
• Tool is free and open source

[Copilot]

Pull request overview

Adds AgentGuard to the README’s “Specialized CLI Tools” list to highlight an AI agent supply-chain security tool that validates/intercepts agent-initiated package installs.

Changes:

• Added a new README entry for AgentGuard under CLI & Terminal Tools → Specialized CLI Tools.

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