import type ToolRegistry from '../tool/tool.registry';
/**
 * Result of validating tool availability for a skill.
 */
export interface ToolValidationResult {
    /**
     * Tools that are available (exist and not hidden).
     */
    available: string[];
    /**
     * Tools that don't exist in the registry.
     */
    missing: string[];
    /**
     * Tools that exist but are hidden from discovery.
     */
    hidden: string[];
    /**
     * True if all required tools are available (exist and not hidden).
     */
    complete: boolean;
}
/**
 * Validates tool availability for skills.
 *
 * This validator checks if the tools referenced by a skill are available
 * in the current scope. It categorizes tools as available, missing, or hidden.
 */
export declare class SkillToolValidator {
    private readonly toolRegistry;
    constructor(toolRegistry: ToolRegistry);
    /**
     * Validate tool availability for a list of tool names.
     *
     * @param toolNames - Array of tool names to validate
     * @param requiredTools - Optional set of tool names that are required
     * @returns Validation result with categorized tools
     */
    validate(toolNames: string[], requiredTools?: Set<string>): ToolValidationResult;
    /**
     * Format a warning message for missing/hidden tools.
     *
     * @param result - Validation result
     * @param skillName - Name of the skill (for error message)
     * @returns Warning message or undefined if no issues
     */
    formatWarning(result: ToolValidationResult, skillName: string): string | undefined;
    /**
     * Check if a single tool is available (exists and not hidden).
     *
     * @param toolName - Name of the tool to check
     * @returns True if the tool is available
     */
    isToolAvailable(toolName: string): boolean;
    /**
     * Check if a single tool exists (regardless of visibility).
     *
     * @param toolName - Name of the tool to check
     * @returns True if the tool exists
     */
    toolExists(toolName: string): boolean;
}
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