# mcp.SafetyEnvironmentVariable

- **Module:** mcp
- **Package:** github.com/libtmux/libtmux-go/mcp
- **Language:** Go
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/mcp/tool_surface.go#L27
- **Page:** https://libtmux.org/en/go/latest/mcp/reference/mcp-safetyenvironmentvariable/

SafetyEnvironmentVariable is rejected because ordered safety tiers were retired.