codex-cli

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.90). The skill demonstrates a runtime command that adds/uses an external MCP endpoint which the CLI will fetch and which can supply model context/instructions (codex mcp add remote --url https://mcp.example.com/mcp), so that URL can directly control agent prompts at runtime.