MCP connectors by app.askmarcel.mcp

AskMarcel connects AI agents to manufacturer-sourced HVAC technical documentation. • 6 MCP tools: search, procedure, error codes, product sheets, PDF snapshots, diagnose • 126 brands, 905 models, 1,885+ error codes • Free Developer tier: 500 API calls/month • Responses cite manual page numbers — see HVAC-Bench for proof vs raw LLM