/**
 * Elicitation Error Classes
 *
 * Errors related to MCP elicitation requests.
 */
import { PublicMcpError, InternalMcpError } from './mcp.error';
/**
 * Elicitation not supported error.
 *
 * Thrown when attempting to elicit from a client that does not support
 * elicitation, or when the transport is not available for elicitation.
 */
export declare class ElicitationNotSupportedError extends PublicMcpError {
    constructor(message?: string);
}
/**
 * Elicitation fallback required.
 *
 * Thrown when elicitation is requested but the client doesn't support the
 * standard elicitation protocol. This is NOT a failure error - it triggers
 * the fallback flow where the tool returns instructions to the LLM, and
 * the LLM uses the sendElicitationResult tool to continue.
 *
 * This error carries all context needed to re-invoke the tool when
 * the result arrives via sendElicitationResult.
 */
export declare class ElicitationFallbackRequired extends PublicMcpError {
    /** Unique identifier for this elicitation request */
    readonly elicitId: string;
    /** Message to display to the user */
    readonly elicitMessage: string;
    /** JSON Schema for the expected response */
    readonly schema: Record<string, unknown>;
    /** Name of the tool that requested elicitation */
    readonly toolName: string;
    /** Original input arguments passed to the tool */
    readonly toolInput: unknown;
    /** Time-to-live in milliseconds */
    readonly ttl: number;
    constructor(
    /** Unique identifier for this elicitation request */
    elicitId: string, 
    /** Message to display to the user */
    elicitMessage: string, 
    /** JSON Schema for the expected response */
    schema: Record<string, unknown>, 
    /** Name of the tool that requested elicitation */
    toolName: string, 
    /** Original input arguments passed to the tool */
    toolInput: unknown, 
    /** Time-to-live in milliseconds */
    ttl: number);
    getPublicMessage(): string;
}
/**
 * Elicitation timeout error.
 *
 * Thrown when an elicitation request times out waiting for user response.
 * This error is thrown to kill the tool/agent execution memory and ensure
 * resources are properly cleaned up.
 */
export declare class ElicitationTimeoutError extends PublicMcpError {
    /** The ID of the timed-out elicitation request */
    readonly elicitId: string;
    /** The TTL that was exceeded (in milliseconds) */
    readonly ttl: number;
    constructor(elicitId: string, ttl: number);
    getPublicMessage(): string;
}
/**
 * Elicitation store not initialized error.
 *
 * Thrown when attempting to access the elicitation store before scope initialization
 * has completed. Callers should await scope.ready before accessing elicitationStore.
 */
export declare class ElicitationStoreNotInitializedError extends InternalMcpError {
    constructor();
}
/**
 * Elicitation disabled error.
 *
 * Thrown when attempting to use elicitation when it is disabled in server configuration.
 * To enable elicitation, set `elicitation: { enabled: true }` in @FrontMcp metadata.
 */
export declare class ElicitationDisabledError extends PublicMcpError {
    constructor();
    getPublicMessage(): string;
}
/**
 * Elicitation encryption error.
 *
 * Thrown when encryption/decryption fails for elicitation data,
 * typically when sessionId is missing or key derivation fails.
 */
export declare class ElicitationEncryptionError extends InternalMcpError {
    readonly originalError?: Error;
    constructor(message: string, originalError?: Error);
    getInternalMessage(): string;
}
/**
 * Elicitation subscription error.
 *
 * Thrown when subscription to elicitation pub/sub channel fails.
 * This is distinct from timeout - it indicates a transport or infrastructure
 * failure rather than user non-response.
 */
export declare class ElicitationSubscriptionError extends InternalMcpError {
    /** The ID of the elicitation request that failed to subscribe */
    readonly elicitId: string;
    /** The underlying error that caused the subscription failure */
    readonly originalError?: Error;
    constructor(elicitId: string, originalError?: Error);
    getInternalMessage(): string;
}
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