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
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First seen 2 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Smithery | AskMarcel-MCP-HVAC | - | 2 Oct 2026 |