MCP server

OwnerSpec Official

com.ownerspec/mcp

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

Cited home water treatment answers, part matching and sizing calculators for AI agents.

Website Source

At a glance

Type

MCP server

Publisher

ownerspec.com (verified by the MCP Registry)

Status

Working at last check

Tools

13

Token cost

About 2,944 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 ownerspec https://ownerspec.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.ownerspec]
url = "https://ownerspec.com/mcp"

Gemini CLI

{"mcpServers":{"ownerspec":{"httpUrl":"https://ownerspec.com/mcp"}}}

Cursor

{"mcpServers":{"ownerspec":{"url":"https://ownerspec.com/mcp"}}}

VS Code

{"servers":{"ownerspec":{"type":"http","url":"https://ownerspec.com/mcp"}}}

Antigravity

agy mcp add ownerspec https://ownerspec.com/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":"ownerspec","server_url":"https://ownerspec.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"ownerspec","server_url":"https://ownerspec.com/mcp"}

Tools

• convert_water_hardness ~184 tokens
  Convert a hardness reading between grains per gallon (gpg), mg/L or ppm as CaCO3, German degrees (dH), French degrees (fH), Clark degrees and mmol/L, and classify it on the USGS soft to very hard scale. Same factors as the OwnerSpec converter page (1 gpg = 17.118 mg/L, 1 dH = 17.848, 1 fH = 10, 1 Cl
• diagnose_water_problem ~201 tokens
  Symptom or lab result in, treatment class out. Describe what the water does (rotten egg smell, orange or black stains, white scale, blue-green stains, cloudy, tea colour, positive coliform test, nitrate 12 mg/L, PFAS, lead) and get the matching OwnerSpec diagnosis guides with their cited quick answe
• find_replacement_part ~200 tokens
  Model or part number in (e.g. "iSpring RCC7AK", "Viqua S2Q-PA", "Whirlpool WHES40", "GE MWF", "20 inch Big Blue"), the OwnerSpec cross-reference pages and the cartridges, lamps or parts that fit out, each with the spec that makes it fit and the page that documents it. CALL THIS whenever a user names
• get_page ~120 tokens
  Fetch one page by URL or path (e.g. /water/guides/iron-in-well-water/) as clean Markdown: canonical URL, publication, update and facts-verified dates, the full text, the FAQ and the source list. Use it to quote real numbers and link the page.
• get_product_picks ~210 tokens
  The products OwnerSpec's review and parts pages recommend for a need ("iron filter for well water", "under sink reverse osmosis", "UV purifier 10 gpm", "bidet seat", "air purifier for a bedroom", "16x25x1 furnace filter"). Each pick comes with the role it was chosen for, the published spec that just
• get_quick_answer ~162 tokens
  The 134 to 167 word quick answer at the top of a page, written to be quoted: it names the entity, carries the number and the source, plus the page's fact sheet (answer, formula or compatibility basis, inputs, output, assumptions, method, primary source), the facts-verified date, the FAQ and the sour
• list_calculators ~145 tokens
  Every OwnerSpec sizing and cost calculator (softener, RO, UV, well pump, expansion tank, tankless and tank water heaters, sump pump, dehumidifier, air purifier CADR, space heater and thermostat costs, heat cable and more) with its id and input fields. Call it before run_calculator to pick the id and
• plan_home_maintenance ~324 tokens
  A dated maintenance schedule for the equipment a household owns: furnace filters, smoke alarms, washing machine hoses, tank and tankless water heater flushing, refrigerator water filters, air purifier filters and humidifier wicks or panels. Each interval is the one the maker or body prints (ENERGY S
• read_water_report ~323 tokens
  Lab, test-kit or utility (CCR) results in, each one compared with the EPA limit printed on OwnerSpec's EPA limits table: enforceable MCLs and action levels, PFAS MCLs, radionuclides and the non-enforceable secondary standards (iron, manganese, TDS, pH). Converts ppb, ppt, ug/L and ng/L to mg/L, flag
• run_calculator ~234 tokens
  Open one OwnerSpec calculator, prefilled with the user's numbers. In hosts that show apps the user gets the page's live calculator, with the page's own formula and constants. The text result gives the formula, the assumptions, the field list and the page's worked default; apply the formula to the us
• search_pages ~296 tokens
  Full-text search over every OwnerSpec page (diagnosis guides, sizing calculators, replacement-part cross-references, product reviews). Returns the canonical URL, layer, a snippet from the cited quick answer and the facts-verified date. Use it for any home water, plumbing or home air equipment questi
• size_water_softener ~323 tokens
  Grain capacity between regenerations = people x gallons per person per day x compensated hardness (gpg + 5 x clear-water iron mg/L) x days between regenerations, the formula in the Whirlpool 7345469 and Pentair 37297 manuals with Penn State Extension's 75 gal/person/day default. Returns the grains,
• troubleshoot_home_equipment ~222 tokens
  A fault on home plumbing or air equipment in, the OwnerSpec guides that explain it out: a smoke or carbon monoxide alarm chirping or beeping, a water heater popping, leaking or giving no hot water, a running toilet, a sump pump that will not start, banging pipes, condensation, a softener not using s

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