/**
 * postgres-mcp - Authorization Server Discovery
 *
 * RFC 8414 Authorization Server Metadata discovery.
 */
import type { AuthServerDiscoveryConfig, AuthorizationServerMetadata } from "./types.js";
/**
 * Authorization Server Discovery (RFC 8414)
 */
export declare class AuthorizationServerDiscovery {
    private readonly config;
    private metadataCache;
    private cacheTime;
    constructor(config: AuthServerDiscoveryConfig);
    /**
     * Discover authorization server metadata
     */
    discover(): Promise<AuthorizationServerMetadata>;
    /**
     * Get JWKS URI from discovered metadata
     */
    getJwksUri(): Promise<string>;
    /**
     * Get token endpoint from discovered metadata
     */
    getTokenEndpoint(): Promise<string>;
    /**
     * Get registration endpoint (if available)
     */
    getRegistrationEndpoint(): Promise<string | undefined>;
    /**
     * Check if auth server supports a specific grant type
     */
    supportsGrantType(grantType: string): Promise<boolean>;
    /**
     * Invalidate cache
     */
    invalidateCache(): void;
}
/**
 * Create an authorization server discovery instance
 */
export declare function createAuthServerDiscovery(config: AuthServerDiscoveryConfig): AuthorizationServerDiscovery;
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