Gemini Spark is Google's 24/7 autonomous AI agent designed to automate complex workflows across Google Workspace. While it offers robust native integrations with applications like Gmail, Drive, and Docs, connecting to external APIs requires additional configuration. Google Apps Script (GAS) serves as a crucial bridge, enabling enterprises to extend Gemini Spark's capabilities significantly. By deploying GAS as a Model Context Protocol (MCP) server or a webhook endpoint, users can grant Gemini Spark access to specialized APIs and custom business logic.The article demonstrates five representative prompts showcasing Gemini Spark's native functionalities. These include autonomously creating spreadsheets with dynamic formulas, intelligently searching for files within Google Drive, and orchestrating cross-domain workflows like web scraping to document generation. It also highlights Gemini Spark's ability to autonomously set up background event listeners for tasks such as processing incoming emails. However, a test prompt involving direct access to the Google Analytics Data API revealed a current limitation in native connectivity to specialized Google APIs.To overcome these native boundaries, the article details the integration of Gemini Spark with Google Apps Script via custom MCP servers and webhook triggers. It explains how to deploy a GAS Web App as an MCP server, leveraging the GASADK and GoogleApiApp libraries to facilitate JSON-RPC communication. This integration allows Gemini Spark to interact securely with APIs like Google Analytics 4, custom databases, and other complex business logic. By using GAS as an intermediary MCP server, developers can encapsulate secure authentication and data extraction logic. The ultimate goal is to enable Gemini Spark to perform enterprise-grade workflow automation by accessing a wider range of data sources and services.