# ToolDefinition.outputSchema

- **Module:** ToolDefinition
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-swift/blob/f02a4668570e1cc5198c941413750e021f42c214/Sources/LibTmuxMCP/ToolCatalog.swift#L154
- **Page:** https://libtmux.org/reference/swift/tooldefinition-outputschema/

What the tool answers with, when that shape is guaranteed. Declared only where it is: MCP requires `structuredContent` to conform to this, so a schema the server may break is worse than none at all.