/**
 * API Validation Service
 *
 * Provides validation functions for API profile names and URLs.
 * Extracted from api-command.ts for reuse and testability.
 */
/**
 * Validate API profile name
 * @returns Error message if invalid, null if valid
 */
export declare function validateApiName(name: string): string | null;
/**
 * Validate URL format
 * @returns Error message if invalid, null if valid
 */
export declare function validateUrl(url: string): string | null;
/**
 * Check if URL looks like it includes endpoint path (common mistake)
 * @returns Warning message if problematic, null if OK
 */
export declare function getUrlWarning(url: string): string | null;
/**
 * Sanitize URL by removing common endpoint suffixes
 */
export declare function sanitizeBaseUrl(url: string): string;
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