HVAC / runnable MCP tool
Run the A2L Line Set Calculator in your AI assistant
Through the free Intry MCP server, Claude, ChatGPT, or Cursor runs this exact calculator and hands back a verdict and the cited source, not a guess. Tool name: line_set.
Ask your assistant
The one rule that makes it reliable: name Intry in your question. That is what tells Claude to run the line_set tool and answer with the real number, the verdict, and the citation. Leave Intry out and Claude may just guess from memory, which is exactly what you are trying to avoid. Type something like:
Inputs
| Field | Required | What it is |
|---|---|---|
| newRefrigerantId | yes | New refrigerant. |
| previousRefrigerantId | optional | Existing set's refrigerant (default none). |
| tons | yes | System tonnage. The sizing table carries exactly these rows: 1.5, 2, 2.5, 3, 3.5, 4, 5. |
| totalLengthFt | yes | Total line-set length in feet. |
| elbows | optional | Number of elbows (default 0). |
| verticalRiseFt | optional | Vertical rise in feet (default 0). |
| existingLiquid | optional | Existing liquid line OD, e.g. '3/8' (default n/a). |
| existingSuction | optional | Existing suction line OD, e.g. '7/8' (default n/a). |
| damaged | optional | Is the existing set damaged/kinked? Default false. |
Add Intry to Claude
One paste and Claude can run this tool and every other Intry calculator, right from your phone.
- Claude opens with the Intry connector already filled in. Review it and click Add.
- (If a field is blank, paste the link below into the URL field.)
- In any chat, tap + then Connectors and switch Intry on. Then name Intry in your question (“use Intry to…”) so Claude runs the tool instead of guessing.
https://www.intrysys.com/api/mcpNo login, no API key, and it works on every Claude plan, right from your phone.
Using ChatGPT, Cursor, or a dev tool? See the developer setup on the main page. The endpoint is https://www.intrysys.com/api/mcp.
Every answer comes with the manufacturer line-set data it came from, so you can check it or show an inspector. The numbers come from the same calculator we run on intrysys.com, and we re-check every one automatically before anything goes live, so the number Claude hands you matches the code.