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Pool Care Calculators MCP server

Which MCP servers are Pool Care Calculators's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-18

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Whose server it is
  • Registry namecom.poolcarecalculators/pool-care-calculatorsverified in the MCP registry

The registry name sits under poolcarecalculators.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-18
  • Stateanswerschecked 2026-10-18
  • Tools2
  • Server calls itselfpool-care-calculators
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-18 the server answered initialize and tools/list without a sign-in. First answer in 64 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.

Once connected

  • Parameters are untyped or undescribed in 2 of 2 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 17, the first on 2026-10-19
  • INITE MCP score95 of 100answers 100 · definitions 83 · context 100 · connects 100
  • Answered100% of days17 of 17 daily checks
  • Median first answer358 ms
  • Space in an agent's context≈ 421 tokensthe definitions of all its tools (2), which an agent carries on every turn
  • Tool definitionsB · 83 of 100
  • Typed results0 of 2 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 2 of 2

What an agent can do with it

  • not sure · Calculate pounds of pool salt to add
  • cannot · Estimate liquid or granular chlorine dose from test readings
  • not sure · Size pump flow from gallons and turnover time

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers2 tools · read 2026-10-18
  • calculate_pool_salt

    Estimate swimming pool salt addition in pounds and bags from measured salt ppm and a user-supplied target. Includes high-salt dilution guidance and retest cautions. No equipment control.

  • calculate_pool_volume

    Estimate swimming pool volume in US gallons and liters from rectangular, round, oval, or surface-area dimensions in feet or meters. Includes turnover flow, not equipment sizing.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "pool-care-calculators": {
      "type": "http",
      "url": "https://poolcarecalculators.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http poolcarecalculators https://poolcarecalculators.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://poolcarecalculators.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.