read-github
Read and search GitHub repository documentation via gitmcp.io MCP service. **WHEN TO USE:** - User provides a GitHub URL - User mentions a specific repo in owner/repo format - User asks "what does this repo do?", "read the docs for X repo", or similar - User wants to search code or docs within a repo
87
84%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Advisory
Suggest reviewing before use
Security
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
W011: Third-party content exposure detected (indirect prompt injection risk)
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Third-party content exposure detected (high risk: 1.00). This skill explicitly fetches and ingests public, user-generated GitHub repository documentation and arbitrary external URLs via the gitmcp.io MCP tools (see SKILL.md workflow and scripts/gitmcp.py's fetch-docs, search-docs, and fetch-url/call of fetch_generic_url_content), so untrusted third-party content can be read and influence agent actions.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The skill spawns npx mcp-remote pointed at gitmcp.io (e.g. https://gitmcp.io/owner/repo) at runtime and depends on that MCP server’s returned tool definitions and documentation (and on npx fetching/executing the mcp-remote package), which can inject instructions or execute remote code that control the agent.
- Repository
- am-will/codex-skills
- Commit
ca2c3b3
- Audited
- Security analysis
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.