/**
 * Utility for extracting output from MCP tool call results
 *
 * This function implements the exact same logic used by mcp-tool-executor.ts
 * to ensure testMcpTool returns the same output that would be available
 * in a graph node's execution context.
 */
/**
 * Extract the output from an MCP tool call result.
 * This matches the exact extraction logic used in mcp-tool-executor.ts
 *
 * @param result - The result from client.callTool()
 * @returns The extracted output (structuredContent if present, otherwise parsed/raw content)
 * @throws Error if result is in an unexpected format
 */
export declare function extractMcpToolOutput(result: {
    isError?: boolean;
    content?: unknown[];
    structuredContent?: unknown;
    [key: string]: unknown;
}): unknown;
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