/**
 * Unified MCP tool result builders.
 *
 * Legacy shapes existed across *-tools.ts:
 *   { text }
 *   { text, isError: true }
 *   { content: [{ type: "text", text }] }
 *
 * Unified shape carries BOTH `content` (MCP spec) and `text` (legacy callers
 * + existing tests) so migration is non-breaking. New code should rely on
 * `content` only; `text` is deprecated and may be dropped in a future major.
 */
export interface TextContentBlock {
    type: "text";
    text: string;
}
export interface ToolResult {
    content: TextContentBlock[];
    /** @deprecated kept for backwards compatibility — read `content` instead. */
    text: string;
    isError?: boolean;
}
export declare const textResult: (text: string) => ToolResult;
export declare const errorResult: (text: string) => ToolResult;
export declare const jsonResult: (value: unknown) => ToolResult;
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