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PT Chart

R0· no sign-in

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

v1.0.0 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79new
Trust80of 100
Uptime, 30 days100%
Latency p50238 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "pt-chart-mcp": {
      "type": "http",
      "url": "https://pt-chart-mcp-production.up.railway.app/mcp"
    }
  }
}
claude mcp add --transport http pt-chart-mcp https://pt-chart-mcp-production.up.railway.app/mcp
[mcp_servers.pt-chart-mcp]
url = "https://pt-chart-mcp-production.up.railway.app/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pt-chart-mcp": {
      "type": "remote",
      "url": "https://pt-chart-mcp-production.up.railway.app/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "pt-chart-mcp": {
      "type": "http",
      "url": "https://pt-chart-mcp-production.up.railway.app/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=pt-chart-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcHQtY2hhcnQtbWNwLXByb2R1Y3Rpb24udXAucmFpbHdheS5hcHAvbWNwIn0%3D"
}
{
  "servers": {
    "pt-chart-mcp": {
      "type": "http",
      "url": "https://pt-chart-mcp-production.up.railway.app/mcp"
    }
  }
}
{
  "mcpServers": {
    "pt-chart-mcp": {
      "httpUrl": "https://pt-chart-mcp-production.up.railway.app/mcp"
    }
  }
}
extensions:
  "pt-chart-mcp":
    enabled: true
    name: "pt-chart-mcp"
    type: streamable_http
    uri: "https://pt-chart-mcp-production.up.railway.app/mcp"
    timeout: 300

Quality 79 / 100new

protocol88 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • warn
    protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: pt_lookup (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); coolbooked_info (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); pt_reverse (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 1,122 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stabilityn/a · weight 15
  • n/a
    stability.changes, stability.rug_pulltool history recorded for 1 of the 7 days needed
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

8 tools, about 1,122 tokens to load them all · tool set 94b698246847 · checked 2026-10-19 16:20 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 80 / 100

no-repository
provenance45
liveness100
freshness100
hygiene80

+website +reachable +uptime-100% +updated-2d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://pt-chart-mcp-production.up.railway.app/mcp streamable-httpnoneyes100%238 ms2026-07-282026-10-19

Tools (8)

convert_unitsConvert 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_infoAbout 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.
diagnoseConversational 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, vent refrigerant, or work uncertified. metering: 'txv' (default) or 'fixed' for fixed-orifice/piston systems.
pt_lookupSaturation 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. Pure fluids (R-32, R-410A, R-22, R-134a) have no glide, so both values match.
pt_reverseSaturation 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 BUBBLE temperature for subcooling work on blended refrigerants.
refrigerant_infoReference 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.
subcoolingSubcooling 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.
superheatSuperheat 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.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "io.github.Tsonnn/pt-chart-mcp",
  "title": "PT Chart",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://pt-chart-mcp-production.up.railway.app/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://coolbooked.com/tools/pt-chart/",
  "description": "PT chart lookups, superheat/subcooling calculators, and diagnostics for HVAC technicians."
}