building-chatgpt-apps

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

• Potentially malicious external URL detected (high risk: 0.80). The skill instructs registering and using an external MCP server URL (example: https://abc123.ngrok-free.app/mcp) that ChatGPT will call at runtime and whose returned structuredContent and _meta/widget resources directly control the model's narration and widget behavior, so this is a runtime external dependency that can influence prompts.