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

• Potentially malicious external URL detected (high risk: 0.90). The Agents SDK contains runtime code that registers an external MCP server and fetches AI tools (which control agent tooling/prompts) from the configured MCP_SERVER_URL (example: https://mcp.example.com), so that external URL is used at runtime to influence the agent's behavior.