"OpenAI Gym" matching MCP servers:

Enables Google Workspace administration (Directory, Gmail, Drive, Sheets) via MCP using Domain-Wide Delegation for secure, schema-validated tool operations.

A unified MCP server that connects HubSpot, Clay, Apollo, Slack, and email to enable AI agents to execute multi-step GTM workflows such as prospecting, enrichment, CRM updates, and notifications.

Experimental MCP server that integrates OpenAI and Serper APIs for news search, sentiment analysis, and email delivery.