Developer Tools
AI Infrastructure
Productivity
Active
VibeMCP
Token-optimized unified MCP server for Gmail and Microsoft 365. One server, two ecosystems, half the tokens. TOON format for efficient AI agent communication.
npm Downloads/wk
560+
Highlights
- Unified Gmail and Microsoft 365 in one MCP server
- TOON format for 50% token reduction
- OAuth 2.0 multi-account support
- Calendar, email, and contacts integration
- Built for AI agent workflows
Overview
VibeMCP is a unified Model Context Protocol server that connects AI agents to both Gmail and Microsoft 365 through a single interface. It uses the TOON (Token-Optimized Object Notation) format to cut token usage in half compared to standard JSON responses.
Key Features
- Unified Interface: Access Gmail, Outlook, Google Calendar, and Microsoft Calendar through one MCP server
- Token Optimization: TOON format reduces LLM token consumption by approximately 50%
- Multi-Account: OAuth 2.0 support for multiple Google and Microsoft accounts simultaneously
- Full Coverage: Email send, reply, search, labels, folders, calendar events, and contact resolution
Architecture
Built with TypeScript and Node.js, VibeMCP wraps Gmail API and Microsoft Graph API behind a consistent MCP tool interface. Each tool returns structured TOON output optimized for LLM parsing.
