gong-mcp

Instructions

Implementation Reference

• src/index.ts:273-382 (handler)

  The generic handler function executeApiTool that implements the core logic for all tools, including getv2dataprivacydataforemailaddress. It validates input using Zod schema from inputSchema, builds the API URL (https://api.gong.io/v2/data-privacy/data-for-email-address with query params emailAddress and cursor), uses Basic Auth from GONG_ACCESS_KEY and GONG_SECRET env vars, makes axios GET request, and returns the JSON response.
  async function executeApiTool( toolName: string, definition: McpToolDefinition, toolArgs: JsonObject, allSecuritySchemes: Record<string, any> ): Promise<CallToolResult> { try { // Validate input arguments using Zod const zodSchema = getZodSchemaFromJsonSchema(definition.inputSchema, toolName); const validatedArgs = zodSchema.parse(toolArgs); // Build the request URL let url = API_BASE_URL + definition.pathTemplate; // Replace path parameters for (const param of definition.executionParameters) { if (param.in === 'path') { const value = validatedArgs[param.name]; if (value !== undefined) { url = url.replace(`{${param.name}}`, encodeURIComponent(value)); } } } // Build query parameters const queryParams: Record<string, string> = {}; for (const param of definition.executionParameters) { if (param.in === 'query') { const value = validatedArgs[param.name]; if (value !== undefined) { queryParams[param.name] = value; } } } if (Object.keys(queryParams).length > 0) { url += '?' + new URLSearchParams(queryParams).toString(); } // Debug logging (safe) console.error('Debug - Making API request to:', url); // Get credentials from environment const accessKey = process.env.GONG_ACCESS_KEY || ''; const secret = process.env.GONG_SECRET || ''; if (!accessKey || !secret) { throw new Error('Missing Gong credentials in environment'); } // Create authorization header const authHeader = `Basic ${Buffer.from(`${accessKey}:${secret}`).toString('base64')}`; // Build request config const config: AxiosRequestConfig = { method: definition.method, url, headers: { 'Accept': 'application/json', 'Authorization': authHeader } }; // Add request body if needed if (definition.requestBodyContentType) { config.headers!['Content-Type'] = definition.requestBodyContentType; if (validatedArgs.requestBody) { config.data = validatedArgs.requestBody; } } // Make the request const response = await axios(config); return { content: [ { type: 'text', text: JSON.stringify(response.data, null, 2) } ] }; } catch (error: any) { if (error instanceof ZodError) { return { content: [{ type: 'text', text: `Validation error: ${error.message}` }] }; } if (axios.isAxiosError(error)) { return { content: [{ type: 'text', text: formatApiError(error) }] }; } return { content: [{ type: 'text', text: `Unexpected error: ${error.message}` }] }; } }
• src/index.ts:100-109 (registration)

  Registration of the tool in toolDefinitionMap, defining its metadata, input schema, API endpoint details (GET /v2/data-privacy/data-for-email-address), parameters (emailAddress and cursor as query params), and security (basicAuth). This entry enables the tool to be listed and dispatched.
  ["getv2dataprivacydataforemailaddress", { name: "getv2dataprivacydataforemailaddress", description: `Activities for an email address (GDPR helper)`, inputSchema: {"type":"object","properties":{"emailAddress":{"type":"string","format":"email"},"cursor":{"type":"string"}},"required":["emailAddress"]}, method: "get", pathTemplate: "/v2/data-privacy/data-for-email-address", executionParameters: [{"name":"emailAddress","in":"query"},{"name":"cursor","in":"query"}], requestBodyContentType: undefined, securityRequirements: [{"basicAuth":[]}] }],
• src/index.ts:103-103 (schema)

  JSON Schema for tool input validation: requires 'emailAddress' (email format), optional 'cursor' (string). Used to generate Zod schema for runtime validation.
  inputSchema: {"type":"object","properties":{"emailAddress":{"type":"string","format":"email"},"cursor":{"type":"string"}},"required":["emailAddress"]},
• src/index.ts:143-151 (handler)

  MCP server request handler for CallToolRequestSchema that dispatches to the specific tool by looking up in toolDefinitionMap and calling executeApiTool.
  server.setRequestHandler(CallToolRequestSchema, async (request: CallToolRequest): Promise<CallToolResult> => { const { name: toolName, arguments: toolArgs } = request.params; const toolDefinition = toolDefinitionMap.get(toolName); if (!toolDefinition) { console.error(`Error: Unknown tool requested: ${toolName}`); return { content: [{ type: "text", text: `Error: Unknown tool requested: ${toolName}` }] }; } return await executeApiTool(toolName, toolDefinition, toolArgs ?? {}, securitySchemes); });
• src/index.ts:462-477 (helper)

  Helper function to convert the tool's JSON inputSchema to a Zod schema for validation in the handler.
  function getZodSchemaFromJsonSchema(jsonSchema: any, toolName: string): z.ZodTypeAny { if (typeof jsonSchema !== 'object' || jsonSchema === null) { return z.object({}).passthrough(); } try { const zodSchemaString = jsonSchemaToZod(jsonSchema); const zodSchema = eval(zodSchemaString); if (typeof zodSchema?.parse !== 'function') { throw new Error('Eval did not produce a valid Zod schema.'); } return zodSchema as z.ZodTypeAny; } catch (err: any) { console.error(`Failed to generate/evaluate Zod schema for '${toolName}':`, err); return z.object({}).passthrough(); } }