# www.stokerheating.com — plumbing and HVAC — 2 of 5

Home > Browse > By country > United States > www.stokerheating.com

> Probe-verified (tier 2 of 3). Last checked 2026-09-27. 2 of 5 capability checks passed. 2 unknown.

- host: www.stokerheating.com
- url: https://www.stokerheating.com/
- category: plumbing and HVAC
- type: business
- country: US
- locations: Chicago
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-09-27 against rubric v1.2. 2 of 5 checks passed. 2 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- PASS — llms.txt (`/llms.txt`)
- FAIL — API catalog (`RFC 9727`)
- PASS — MCP server card answers (`/.well-known/mcp/server-card.json → tools/list`)

MCP tools (from tools/list on 2026-09-27, served from www.wixapis.com): search_catalog, lookup_catalog, get_product, create_checkout, get_checkout, update_checkout, complete_checkout, cancel_checkout

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **book** — "" → `https://www.stokerheating.com/_api/mcp`

## Summary

Boiler and heating services in Chicago since 1956, specializing in steam and hot water boilers, repair, installation, and maintenance for residential and commercial clients. Services include water heaters, burners, pumps, and controls with emergency 7-day service.

## Context

109 sites in this index share the category "plumbing and HVAC"; 35 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- United States: https://knowngood.sh/country/US
- business: https://knowngood.sh/type/business
- plumbing and HVAC: https://knowngood.sh/category/plumbing-hvac
- wix: https://knowngood.sh/platform/wix
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark