/**
 * Tool Validator - Pre-validate MCP tools before scheduling
 * Implements MCP-native validation protocol with fallback
 *
 * Protocol: Tries tools/validate first (deep validation), falls back to schema validation
 */
export interface ValidationResult {
    valid: boolean;
    errors: string[];
    warnings: string[];
    validationMethod?: 'mcp-native' | 'schema-only' | 'test-execution';
    schema?: any;
    testExecutionResult?: {
        success: boolean;
        output?: any;
        error?: string;
        duration: number;
    };
}
export declare class ToolValidator {
    private orchestrator?;
    constructor(orchestrator?: any | undefined);
    /**
     * Validate tool and parameters before scheduling
     *
     * Validation Strategy:
     * 1. Try MCP-native validation (tools/validate) - GOLD STANDARD
     * 2. Fall back to schema-only validation if not supported
     * 3. Optional: Test execution as final verification
     */
    validateTool(tool: string, parameters: Record<string, any>, options?: {
        testRun?: boolean;
        timeout?: number;
    }): Promise<ValidationResult>;
    /**
     * Create a temporary orchestrator (fallback when none provided)
     * WARNING: This is slow! Prefer dependency injection for production use.
     */
    private createTemporaryOrchestrator;
    /**
     * Try MCP-native validation (tools/validate method)
     *
     * This is the GOLD STANDARD for validation - allows MCPs to do deep validation
     * like checking if paths exist, testing database connections, verifying permissions, etc.
     *
     * Implementation follows capability-based approach:
     * 1. Check if MCP announces experimental.toolValidation capability
     * 2. If yes, call the validate tool
     * 3. If no, return not supported (skip validation attempt)
     */
    private tryMCPNativeValidation;
    /**
     * Find tool in orchestrator
     */
    private findTool;
    /**
     * Validate parameters against JSON schema
     */
    private validateAgainstSchema;
    /**
     * Validate parameter type
     */
    private validateType;
    /**
     * Run test execution
     */
    private runTestExecution;
}
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