Initial commit of n8n MCP Server

A Model Context Protocol (MCP) server that integrates with n8n, providing tools for workflow and execution management via the n8n API.

src/tools/execution/get.ts

@@ -0,0 +1,68 @@
+/**
+ * Get Execution Tool
+ * 
+ * This tool retrieves detailed information about a specific workflow execution.
+ */
+
+import { BaseExecutionToolHandler } from './base-handler.js';
+import { ToolCallResult, ToolDefinition, Execution } from '../../types/index.js';
+import { McpError } from '@modelcontextprotocol/sdk/types.js';
+import { ErrorCode } from '../../errors/error-codes.js';
+import { formatExecutionDetails } from '../../utils/execution-formatter.js';
+
+/**
+ * Handler for the get_execution tool
+ */
+export class GetExecutionHandler extends BaseExecutionToolHandler {
+  /**
+   * Execute the tool
+   * 
+   * @param args Tool arguments (executionId)
+   * @returns Execution details
+   */
+  async execute(args: Record<string, any>): Promise<ToolCallResult> {
+    return this.handleExecution(async () => {
+      // Validate required parameters
+      if (!args.executionId) {
+        throw new McpError(
+          ErrorCode.InvalidRequest,
+          'Missing required parameter: executionId'
+        );
+      }
+      
+      // Get execution details
+      const execution = await this.apiService.getExecution(args.executionId);
+      
+      // Format the execution for display
+      const formattedExecution = formatExecutionDetails(execution);
+      
+      return this.formatSuccess(
+        formattedExecution,
+        `Execution Details for ID: ${args.executionId}`
+      );
+    }, args);
+  }
+  
+}
+
+/**
+ * Get tool definition for the get_execution tool
+ * 
+ * @returns Tool definition
+ */
+export function getGetExecutionToolDefinition(): ToolDefinition {
+  return {
+    name: 'get_execution',
+    description: 'Retrieve detailed information about a specific workflow execution',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        executionId: {
+          type: 'string',
+          description: 'ID of the execution to retrieve',
+        },
+      },
+      required: ['executionId'],
+    },
+  };
+}