export type McpErrorCode = 'SOURCE_UNAVAILABLE' | 'INVALID_PARAMS' | 'RATE_LIMITED' | 'AUTH_FAILED' | 'INTERNAL_ERROR';
export interface McpTextContent {
    [key: string]: unknown;
    type: 'text';
    text: string;
}
export interface ToolResult {
    [key: string]: unknown;
    content: McpTextContent[];
    isError?: boolean;
}
export interface McpErrorResult {
    [key: string]: unknown;
    content: [{
        [key: string]: unknown;
        type: 'text';
        text: string;
    }];
    isError: true;
}
export declare function makeMcpError(error: string, code: McpErrorCode, details?: string): McpErrorResult;
export interface ToolCallContext {
    serverName: string;
    toolName: string;
}
/** Execute a tool handler, catching and formatting any thrown errors. */
export declare function withMcpMiddleware(_ctx: ToolCallContext, handler: () => Promise<ToolResult>): Promise<ToolResult | McpErrorResult>;
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