Dev Tools · 14h ago
Fixing OneNote MCP Server Auth: TypeScript Rewrite Solves 401 Errors
A developer rewrote a OneNote MCP server in TypeScript after hitting persistent 401 errors with Microsoft Graph API. The root cause was using application-level scopes that personal Microsoft accounts cannot consent to. Switching to delegated scopes resolved the issue for both personal and work accounts.
Meridian48 take
The fix highlights a common Azure AD pitfall that can silently break integrations, but the real story is how MCP is driving developers to build practical AI tool connectors.
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I Rewrote a OneNote MCP Server in TypeScript — Here's What I Learned About Microsoft Graph Auth →
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mcp-servermicrosoft-graph