Feat/add supergateway MCP (#4303)

* add supergateway MCP

* update supergateway mcp

Author: HenryHengZJ

packages/components/nodes/tools/MCP/Supergateway/SupergatewayMCP.ts

@@ -0,0 +1,119 @@
+import { Tool } from '@langchain/core/tools'
+import { ICommonObject, INode, INodeData, INodeOptionsValue, INodeParams } from '../../../../src/Interface'
+import { getNodeModulesPackagePath } from '../../../../src/utils'
+import { MCPToolkit } from '../core'
+
+class Supergateway_MCP implements INode {
+    label: string
+    name: string
+    version: number
+    description: string
+    type: string
+    icon: string
+    category: string
+    baseClasses: string[]
+    documentation: string
+    credential: INodeParams
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Supergateway MCP'
+        this.name = 'supergatewayMCP'
+        this.version = 1.0
+        this.type = 'Supergateway MCP Tool'
+        this.icon = 'supermachine-logo.png'
+        this.category = 'Tools (MCP)'
+        this.description = 'Runs MCP stdio-based servers over SSE (Server-Sent Events) or WebSockets (WS)'
+        this.documentation = 'https://github.com/supercorp-ai/supergateway'
+        this.inputs = [
+            {
+                label: 'Arguments',
+                name: 'arguments',
+                type: 'string',
+                rows: 4,
+                placeholder: '--sse "https://mcp-server-ab71a6b2-cd55-49d0-adba-562bc85956e3.supermachine.app"',
+                description:
+                    'Arguments to pass to the supergateway server. Refer to the <a href="https://github.com/supercorp-ai/supergateway/blob/main/README.md" target="_blank">documentation</a> for more information.'
+            },
+            {
+                label: 'Available Actions',
+                name: 'mcpActions',
+                type: 'asyncMultiOptions',
+                loadMethod: 'listActions',
+                refresh: true
+            }
+        ]
+        this.baseClasses = ['Tool']
+    }
+
+    //@ts-ignore
+    loadMethods = {
+        listActions: async (nodeData: INodeData, options: ICommonObject): Promise<INodeOptionsValue[]> => {
+            try {
+                const toolset = await this.getTools(nodeData, options)
+                toolset.sort((a: any, b: any) => a.name.localeCompare(b.name))
+
+                return toolset.map(({ name, ...rest }) => ({
+                    label: name.toUpperCase(),
+                    name: name,
+                    description: rest.description || name
+                }))
+            } catch (error) {
+                return [
+                    {
+                        label: 'No Available Actions',
+                        name: 'error',
+                        description: 'No available actions, please check the arguments again and refresh'
+                    }
+                ]
+            }
+        }
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        const tools = await this.getTools(nodeData, options)
+
+        const _mcpActions = nodeData.inputs?.mcpActions
+        let mcpActions = []
+        if (_mcpActions) {
+            try {
+                mcpActions = typeof _mcpActions === 'string' ? JSON.parse(_mcpActions) : _mcpActions
+            } catch (error) {
+                console.error('Error parsing mcp actions:', error)
+            }
+        }
+
+        return tools.filter((tool: any) => mcpActions.includes(tool.name))
+    }
+
+    async getTools(nodeData: INodeData, _: ICommonObject): Promise<Tool[]> {
+        const _args = nodeData.inputs?.arguments as string
+        const packagePath = getNodeModulesPackagePath('supergateway/dist/index.js')
+
+        const serverParams = {
+            command: 'node',
+            args: [
+                packagePath,
+                ..._args
+                    .trim()
+                    .split(/\s+/)
+                    .map((arg) => {
+                        // Remove surrounding double or single quotes if they exist
+                        if ((arg.startsWith('"') && arg.endsWith('"')) || (arg.startsWith("'") && arg.endsWith("'"))) {
+                            return arg.slice(1, -1)
+                        }
+                        return arg
+                    })
+            ]
+        }
+
+        const toolkit = new MCPToolkit(serverParams, 'stdio')
+        await toolkit.initialize()
+
+        const tools = toolkit.tools ?? []
+
+        return tools as Tool[]
+    }
+}
+
+module.exports = { nodeClass: Supergateway_MCP }

packages/components/nodes/tools/MCP/Supergateway/supermachine-logo.png

@@ -133,6 +133,7 @@
         "replicate": "^0.31.1",
         "sanitize-filename": "^1.6.3",
         "srt-parser-2": "^1.2.3",
+        "supergateway": "3.0.1",
         "typeorm": "^0.3.6",
         "weaviate-ts-client": "^1.1.0",
         "winston": "^3.9.0",