Microsoft Excel Access the Microsoft Excel API (via Microsoft Graph) with managed OAuth authentication. Read and write workbooks, worksheets, ranges, tables, and charts stored in OneDrive or SharePoint. Quick Start Base URL Replace with the actual Microsoft Graph API endpoint path. The gateway proxies requests to and automatically injects your OAuth token. Authentication All requests require the Maton API key in the Authorization header: Environment Variable: Set your API key as : Getting Your API Key 1. Sign in or create an account at maton.ai 2. Go to maton.ai/settings 3. Copy your API key…