/**
 * Tool Name Sanitizer
 *
 * Sanitizes tool names to a cross-provider safe format:
 * - Max 64 characters
 * - Must start with letter or underscore
 * - Only a-z A-Z 0-9 _ - allowed
 *
 * Strategies:
 * 1. Remove duplicate segments (e.g., gitmcp__foo__foo -> gitmcp__foo)
 * 2. Normalize unsupported characters to underscores
 * 3. Rewrite MCP tool names to deterministic short aliases
 * 4. Smart truncate with hash suffix if still >64 chars
 *
 * Note: Hash collision risk is very low for practical tool counts.
 */
/** Maximum tool name length allowed by Gemini API */
export declare const GEMINI_MAX_TOOL_NAME_LENGTH = 64;
/** Result of sanitization operation */
export interface SanitizeResult {
    /** The sanitized tool name */
    sanitized: string;
    /** Whether the name was changed */
    changed: boolean;
}
/**
 * Check if a tool name is valid.
 *
 * Requirements:
 * - Length <= 64 characters
 * - Starts with letter or underscore
 * - Contains only valid characters: a-z A-Z 0-9 _ -
 */
export declare function isValidToolName(name: string): boolean;
/**
 * Remove consecutive duplicate segments separated by '__'.
 *
 * Examples:
 * - 'gitmcp__foo__foo' -> 'gitmcp__foo'
 * - 'a__b__c__b__c' -> 'a__b__c'
 * - 'no_dupes' -> 'no_dupes'
 */
export declare function removeDuplicateSegments(name: string): string;
/**
 * Smart truncate a name to fit within maxLen.
 * Preserves start of name and appends hash suffix for uniqueness.
 *
 * Format: <prefix>_<6-char-hash>
 */
export declare function smartTruncate(name: string, maxLen?: number): string;
/**
 * Sanitize a tool name to comply with conservative provider constraints.
 *
 * Process:
 * 1. Remove duplicate segments
 * 2. Convert mcp__* names to deterministic short aliases
 * 3. Normalize unsupported characters for other names
 * 4. Truncate if needed
 */
export declare function sanitizeToolName(name: string): SanitizeResult;
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