Interface ToolResult

MCP tool result.

Uses mutable properties for compatibility with secure-handler sanitization (which rewrites text in-place).

interface ToolResult {
    content: TextContent[];
    isError?: boolean;
    structuredContent?: Record<string, unknown>;
    _meta?: Record<string, unknown>;
}

Properties

isError?: boolean

structuredContent?: Record<string, unknown>

Structured output for SDK outputSchema validation (Issue #1117)

_meta?: Record<string, unknown>

Out-of-band metadata, never validated against outputSchema. The structured error envelope (#2649) is carried here under ERROR_ENVELOPE_META_KEY.