domain

Block MCP tools from shadowing or overriding built-in tools. Implement tool name uniqueness validation and prevent tools from registering names that conflict with system tools.

Likely FP if the tool has a name similar to a built-in tool by coincidence (e.g., a search tool) without malicious intent to override system behavior.

Avoid loading configuration or behavior-controlling content from runtime URLs. Bundle required configurations locally or pin remote config to versioned, integrity-verified endpoints.

Likely FP if the URL in the match is a documentation link or example URL (e.g., example.com) rather than an actual runtime-fetched configuration endpoint.