/**
 * visus_read_gsheet MCP Tool
 *
 * Reads and sanitizes a public Google Sheet. Accepts any standard Google Sheets
 * URL format and converts it to a CSV export endpoint. All cell content passes
 * through the IPI injection scanner before being returned.
 *
 * CRITICAL: ALL content MUST pass through the sanitizer. This cannot be bypassed.
 *
 * Pipeline order:
 * 1. Normalize Google Sheets URL to CSV export endpoint
 * 2. Fetch CSV from export endpoint
 * 3. Parse with papaparse (reuses visus_read_csv logic)
 * 4. IPI threat detection on flattened cell content
 * 5. Sanitization (injection detection + PII redaction)
 * 6. Token metrics header
 */
import type { VisusReadGsheetInput, VisusReadGsheetOutput, Result } from '../types.js';
/**
 * Extract spreadsheet ID and GID from various Google Sheets URL formats
 *
 * Supported formats:
 * - https://docs.google.com/spreadsheets/d/{ID}/edit#gid={GID}
 * - https://docs.google.com/spreadsheets/d/{ID}/edit
 * - https://docs.google.com/spreadsheets/d/{ID}
 *
 * @returns Object with spreadsheetId and gid, or error
 */
export declare function parseGsheetUrl(url: string): Result<{
    spreadsheetId: string;
    gid: number;
}, Error>;
/**
 * visus_read_gsheet tool implementation
 *
 * @param input Tool input parameters
 * @returns Sanitized Google Sheet content with metadata
 */
export declare function visusReadGsheet(input: VisusReadGsheetInput): Promise<Result<VisusReadGsheetOutput, Error>>;
export declare const visusReadGsheetToolDefinition: {
    name: string;
    title: string;
    description: string;
    inputSchema: {
        type: "object";
        properties: {
            url: {
                type: string;
                description: string;
            };
            sheet_id: {
                type: string;
                description: string;
                default: number;
            };
            format: {
                type: string;
                enum: string[];
                description: string;
                default: string;
            };
        };
        required: readonly ["url"];
    };
    readOnlyHint: boolean;
    destructiveHint: boolean;
    idempotentHint: boolean;
    openWorldHint: boolean;
};
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