@honua/sdk-js
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    Type Alias McpToolErrorCodeExperimental

    McpToolErrorCode:
        | "invalid_argument"
        | "not_found"
        | "failed_precondition"
        | "permission_denied"
        | "unauthenticated"
        | "insufficient_scope"
        | "internal"
        | "unknown"
        | string

    Every documented code value from the honua-server MCP error contract. Open — a server may add one.