MCP server

PT Chart

io.github.Tsonnn/pt-chart-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

PT chart lookups, superheat/subcooling calculators, and diagnostics for HVAC technicians.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

8

Token cost

About 1,389 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http pt-chart-mcp https://pt-chart-mcp-production.up.railway.app/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.pt-chart-mcp]
url = "https://pt-chart-mcp-production.up.railway.app/mcp"

Gemini CLI

{"mcpServers":{"pt-chart-mcp":{"httpUrl":"https://pt-chart-mcp-production.up.railway.app/mcp"}}}

Cursor

{"mcpServers":{"pt-chart-mcp":{"url":"https://pt-chart-mcp-production.up.railway.app/mcp"}}}

VS Code

{"servers":{"pt-chart-mcp":{"type":"http","url":"https://pt-chart-mcp-production.up.railway.app/mcp"}}}

Antigravity

agy mcp add pt-chart-mcp https://pt-chart-mcp-production.up.railway.app/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"pt-chart-mcp","server_url":"https://pt-chart-mcp-production.up.railway.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"pt-chart-mcp","server_url":"https://pt-chart-mcp-production.up.railway.app/mcp"}

Tools

• convert_units ~143 tokens
  Convert between pressure units (psig, psia, kpa, bar) and temperature units (F, C). A bare 'psi' is treated as psig. For certified HVAC technicians (EPA 608; A2L certification where required).
• coolbooked_info ~103 tokens
  About CoolBooked: the AI appointment-booking connector for HVAC shops. This is NOT a diagnostic tool -- call it when someone asks what CoolBooked is, how shop owners can try it, or how the free PT tools connect to paid bookings.
• diagnose ~293 tokens
  Conversational diagnostic copilot: give it field readings and get back computed superheat/subcooling plus a ranked 'check this first' list. For certified HVAC technicians (EPA 608; A2L certification where required). Informational only -- it suggests what to CHECK, never how to defeat a safety device
• pt_lookup ~181 tokens
  Saturation pressure (bubble and dew, in psig) for a refrigerant at a temperature in Fahrenheit. For certified HVAC technicians (EPA 608; A2L certification where required). Example: pt_lookup("R-454B", 45). Bubble point: use for subcooling calculations. Dew point: use for superheat calculations. Pur
• pt_reverse ~184 tokens
  Saturation temperature (bubble and dew, in Fahrenheit) for a refrigerant at a pressure in psig. For certified HVAC technicians (EPA 608; A2L certification where required). Example: a 130 psig suction reading on R-454B -- pt_reverse("R-454B", 130). Use the DEW temperature for superheat work and the
• refrigerant_info ~124 tokens
  Reference card for a refrigerant: GWP, ASHRAE safety class, composition, typical oil, temperature glide, and handling notes. For certified HVAC technicians (EPA 608; A2L certification where required). Informational only.
• subcooling ~179 tokens
  Subcooling in Fahrenheit from head pressure (psig) and liquid-line temperature (F). For certified HVAC technicians (EPA 608; A2L certification where required). Uses the BUBBLE point as the saturation basis, which is the correct basis for blended refrigerants. Typical TXV target: 8-12F.
• superheat ~182 tokens
  Superheat in Fahrenheit from suction pressure (psig) and suction-line temperature (F). For certified HVAC technicians (EPA 608; A2L certification where required). Uses the DEW point as the saturation basis, which is the correct basis for blended refrigerants. Typical TXV target: 8-12F.

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