VPS_attachPublicKeyV1

Instructions

Implementation Reference

• src/core/tools/vps.js:788-820 (schema)

  The VPS_attachPublicKeyV1 tool schema definition in the auto-generated tool list. It defines the tool as a POST to /api/vps/v1/public-keys/attach/{virtualMachineId} with input parameters 'virtualMachineId' (integer, required) and 'ids' (array of integers, required).

  {
    "name": "VPS_attachPublicKeyV1",
    "description": "Attach existing public keys from your account to a specified virtual machine.\n\nMultiple keys can be attached to a single virtual machine.\n\nUse this endpoint to enable SSH key authentication for VPS instances.",
    "method": "POST",
    "path": "/api/vps/v1/public-keys/attach/{virtualMachineId}",
    "inputSchema": {
      "type": "object",
      "properties": {
        "virtualMachineId": {
          "type": "integer",
          "description": "Virtual Machine ID"
        },
        "ids": {
          "type": "array",
          "description": "Public Key IDs to attach",
          "items": {
            "type": "integer",
            "description": "ids parameter"
          }
        }
      },
      "required": [
        "virtualMachineId",
        "ids"
      ]
    },
    "security": [
      {
        "apiToken": []
      }
    ],
    "group": "vps"
  },

• src/core/tools/vps.ts:799-830 (schema)

  TypeScript-typed version of the VPS_attachPublicKeyV1 tool schema definition with the same POST path and input parameters.

    "name": "VPS_attachPublicKeyV1",
    "description": "Attach existing public keys from your account to a specified virtual machine.\n\nMultiple keys can be attached to a single virtual machine.\n\nUse this endpoint to enable SSH key authentication for VPS instances.",
    "method": "POST",
    "path": "/api/vps/v1/public-keys/attach/{virtualMachineId}",
    "inputSchema": {
      "type": "object",
      "properties": {
        "virtualMachineId": {
          "type": "integer",
          "description": "Virtual Machine ID"
        },
        "ids": {
          "type": "array",
          "description": "Public Key IDs to attach",
          "items": {
            "type": "integer",
            "description": "ids parameter"
          }
        }
      },
      "required": [
        "virtualMachineId",
        "ids"
      ]
    },
    "security": [
      {
        "apiToken": []
      }
    ],
    "group": "vps"
  },

• src/core/runtime.js:86-98 (registration)

  The initializeTools() method that registers all tools (including VPS_attachPublicKeyV1) from the tool list into the internal tools Map for MCP capability listing.

  initializeTools() {
    // Initialize each tool in the tools map
    for (const tool of this.toolList) {
      this.tools.set(tool.name, {
        name: tool.name,
        description: tool.description,
        inputSchema: tool.inputSchema,
        // Don't include security at the tool level
      });
    }
  
    // Don't log here, we're not connected yet
    console.error(`Initialized ${this.tools.size} tools`);

• src/core/runtime.js:1879-1966 (handler)

  The executeApiCall() method which handles the actual execution of non-custom tools like VPS_attachPublicKeyV1. It dynamically constructs and sends the API request based on the tool's method (POST), path, and parameters. Since VPS_attachPublicKeyV1 has custom: false/undefined, it is executed through this generic API call handler.

  async executeApiCall(tool, params) {
    // Get method and path from tool
    const method = tool.method;
    let path = tool.path;
  
    // Clone params to avoid modifying the original
    const requestParams = { ...params };
  
    // Replace path parameters with values from params
    Object.entries(requestParams).forEach(([key, value]) => {
      const placeholder = `{${key}}`;
      if (path.includes(placeholder)) {
        path = path.replace(placeholder, encodeURIComponent(String(value)));
        delete requestParams[key]; // Remove used parameter
      }
    });
  
    // Build the full URL
    const baseUrl = this.baseUrl.endsWith("/") ? this.baseUrl : `${this.baseUrl}/`;
    const cleanPath = path.startsWith("/") ? path.slice(1) : path;
    const url = new URL(cleanPath, baseUrl).toString();
  
    this.log('debug', `API Request: ${method} ${url}`);
  
    try {
      // Configure the request
      const config = {
        method: method.toLowerCase(),
        url,
        headers: { ...this.headers },
        timeout: 60000, // 60s
        validateStatus: function (status) {
          return status < 500; // Resolve only if the status code is less than 500
        }
      };
    
      const bearerToken = process.env['API_TOKEN'] || process.env['APITOKEN']; // APITOKEN for backwards compatibility
      if (bearerToken) {
        config.headers['Authorization'] = `Bearer ${bearerToken}`;
      } else {
        this.log('error', `Bearer Token environment variable not found: API_TOKEN`);
      }
  
      // Add parameters based on request method
      if (["GET", "DELETE"].includes(method)) {
        // For GET/DELETE, send params as query string
        config.params = { ...(config.params || {}), ...requestParams };
      } else {
        // For POST/PUT/PATCH, send params as JSON body
        config.data = requestParams;
        config.headers["Content-Type"] = "application/json";
      }
  
      this.log('debug', "Request config:", {
        url: config.url,
        method: config.method,
        params: config.params,
        headers: Object.keys(config.headers)
      });
  
      // Execute the request
      const response = await axios(config);
      this.log('debug', `Response status: ${response.status}`);
  
      return response.data;
  
    } catch (error) {
      const errorMessage = error instanceof Error ? error.message : String(error);
      this.log('error', `API request failed: ${errorMessage}`);
  
      if (axios.isAxiosError(error)) {
        const responseData = error.response?.data;
        const responseStatus = error.response?.status;
  
        this.log('error', 'API Error Details:', {
          status: responseStatus,
          data: typeof responseData === 'object' ? JSON.stringify(responseData) : responseData
        });
  
        // Rethrow with more context for better error handling
        const detailedError = new Error(`API request failed with status ${responseStatus}: ${errorMessage}`);
        detailedError.response = error.response;
        throw detailedError;
      }
  
      throw error;
    }
  }

• src/servers/vps.js:1-7 (registration)

  Entry point file that imports the tools array and starts the MCP server with the VPS tools including VPS_attachPublicKeyV1.

  #!/usr/bin/env node
  // Auto-generated entry for group: vps
  import { startServer } from '../core/runtime.js';
  import tools from '../core/tools/vps.js';
  
  startServer({ name: 'hostinger-vps-mcp', version: '0.1.41', tools });