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Introduction

agent-toolbox is building secure infrastructure for the emerging AI agent skill ecosystem.

Modern AI coding assistants increasingly rely on agent skills, plugins, hooks, and MCP servers to extend their capabilities. These components form a brand-new software supply chain for AI agents — one that is already seeing real-world security incidents.

agent-toolbox provides a curated and security-vetted catalog of agent components designed to work across multiple AI agentic tools, including:

• Claude Code
• Codex
• Cursor
• Gemini CLI
• OpenCode

The goal is to enable a tool-neutral ecosystem where agent skills can be shared, audited, and reused safely across different developer platforms.

Problems

As the agent ecosystem grows, skill distribution is becoming a new attack surface.

A recent technical report from Snyk found that over 13% of scanned agent skills contain critical security issues, including prompt injection, credential exfiltration, and embedded malware.

In an ecosystem where a SKILL.md file can effectively act as an installer, distributing unvetted skills can mean distributing unvetted code.

Secure distribution of agent skills is therefore becoming critical infrastructure for the AI development ecosystem.

Solution

agent-toolbox addresses this challenge by providing:

• a curated cross-tool skill catalog
• automated security scanning
• provenance tracking for upstream sources
• compatibility across multiple AI coding tools

By combining curation, provenance, and automated scanning, the project aims to make agent skill distribution safer, more transparent, and interoperable across tools.

Support

Maintaining this project requires ongoing work, including:

• catalog curation and security review
• cross-tool compatibility updates
• security scanning infrastructure

Parts of the security pipeline currently rely on personally funded infrastructure, including:

• OpenAI API usage for LLM-based security analysis
• rate-limited VirusTotal public API for malware detection

Your support helps sustain and expand the security infrastructure behind the agent skill ecosystem.

If you find this work valuable, consider becoming a sponsor.