Pool Log MCP

A deterministic pool and spa water test log that checks readings against US CDC ranges. It provides an auditable record, validates for impossible values, and compares pH, free chlorine, and bromine levels. It does not use an LLM and does not decide legal compliance.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Vendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-06Operated by Pool Log

You need:Bearer API key required for tool callsneeds a key

MCP endpoint (Streamable HTTP)

https://pool-log.rowb.app/mcp

Vendor documentation

What its tools do

6 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (6)

check_readings
get_rules
create_site
add_readings
get_log_summary
request_operator_signoff

6 of 6 have a description · 0 of 6 declare behavior hints · 1 of 5 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 6, 2026, 1:39 PM UTC
Passed Official MCP Registry namespace is tied to pool-log.rowb.app · Nov 6, 2026, 1:23 PM UTC
Passed Endpoint is on the registry namespace domain · Nov 6, 2026, 1:23 PM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Check water readings for impossible values
Compare pH and chlorine levels against CDC ranges
Generate printable A4 log sheets
Retrieve exact rule tables and CDC sources

Source and maintenance

Vendor evidenceRegistry 1.0.0

mcp-registry: app.rowb.pool-log/water-log@1.0.0 Project website

Protocol and capabilities

Server: pool-log 1.0.0
MCP protocol negotiated in check: 2025-06-18
Tools: 6 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {}
}

Tools

6 advertised

check_readings

Advertised by the server during the last successful anonymous check.

Check a list of pool or spa water readings for things that cannot be true, and compare pH, free chlorine and bromine against the ranges published on the US CDC pages. Deterministic arithmetic only - no AI. It does not decide whether a pool is legally compliant, and it does not know your local code.

check_readings input schema

{
  "type": "object",
  "required": [
    "readings"
  ],
  "properties": {
    "as_of": {
      "type": "string",
      "description": "Treat this date as \"today\" (YYYY-MM-DD) when rejecting future timestamps. Defaults to the server date."
    },
    "readings": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "Readings to check. Each: {at:\"YYYY-MM-DDTHH:MM\", kind:\"pool|hot_tub|splash_pad|wading_pool|other\", ph?:number, free_chlorine_ppm?:number, total_chlorine_ppm?:number, bromine_ppm?:number, cyanuric_acid_ppm?:number, water_temp_f?:number, disinfectant?:\"chlorine|bromine|none\", method?:\"dpd|test_strip|meter|other\", by?:\"who tested\"}."
    }
  }
}

get_rules

Advertised by the server during the last successful anonymous check.

The exact rule table this service checks against, the quoted source of every range, and what it explicitly does not claim. Quote it if you need to explain a result.

get_rules input schema

{
  "type": "object",
  "properties": {}
}

create_site

Advertised by the server during the last successful anonymous check.

Open a water-test log for one pool, hot tub or splash pad (returns a site id). Requires a bearer key.

create_site input schema

{
  "type": "object",
  "required": [],
  "properties": {
    "label": {
      "type": "string",
      "description": "What to call this water, e.g. \"Apartment pool - north\"."
    },
    "address": {
      "type": "string"
    },
    "water_type": {
      "type": "string",
      "description": "pool | hot_tub | splash_pad | wading_pool | other"
    },
    "disinfectant": {
      "type": "string",
      "description": "chlorine | bromine | none"
    },
    "volume_gallons": {
      "type": "number"
    }
  }
}

add_readings

Advertised by the server during the last successful anonymous check.

Append water readings to an existing log. Requires a bearer key.

add_readings input schema

{
  "type": "object",
  "required": [
    "site_id",
    "readings"
  ],
  "properties": {
    "site_id": {
      "type": "string"
    },
    "readings": {
      "type": "array",
      "items": {
        "type": "object"
      }
    }
  }
}

get_log_summary

Advertised by the server during the last successful anonymous check.

Every reading, the flagged issues, the CDC-range counts, the longest gap between tests, and the A4 log sheet URL, for one log. Requires a bearer key.

get_log_summary input schema

{
  "type": "object",
  "required": [
    "site_id"
  ],
  "properties": {
    "site_id": {
      "type": "string"
    }
  }
}

request_operator_signoff

Advertised by the server during the last successful anonymous check.

Create a one-time URL the pool operator can open to confirm the log. Requires a bearer key. The token is single use.

request_operator_signoff input schema

{
  "type": "object",
  "required": [
    "site_id"
  ],
  "properties": {
    "site_id": {
      "type": "string"
    },
    "provider_name": {
      "type": "string"
    },
    "provider_email": {
      "type": "string"
    }
  }
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

2026-11-06: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 502 ms
95th percentile latency: 502 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 6, 2026, 1:39 PM UTC · probe · passed · 502 ms · metadata changed · 6 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http pool-log-mcp https://pool-log.rowb.app/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add pool-log-mcp --url https://pool-log.rowb.app/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable pool-log-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "pool-log-mcp": {
      "url": "https://pool-log.rowb.app/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "pool-log-mcp": {
      "type": "streamableHttp",
      "url": "https://pool-log.rowb.app/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start pool-log-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "pool-log-mcp": {
      "type": "http",
      "url": "https://pool-log.rowb.app/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http pool-log-mcp https://pool-log.rowb.app/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://pool-log.rowb.app/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "pool-log-mcp": {
      "serverUrl": "https://pool-log.rowb.app/mcp"
    }
  }
}

Let your agent find its tools

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