What we tested
Probed live on 23 Aug 2026 against rubric v1. 4 of 5 checks passed.
PROBE-VERIFIEDtier 2 of 3
✓Markdown negotiationAccept: text/markdown
—Markdown twin at a predictable URL/page.md
✓llms.txt/llms.txt
✓API catalogRFC 9727
✓MCP server answers/.well-known/mcp/server-card.json → tools/list
What its MCP server offers
We connected, ran tools/list, and recorded what came back on 23 Aug 2026. 2 tools.
upvc_price_estimateupvc_compare_materials
What an agent could do here
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.
UNVERIFIED
contact“Contact and quote routing: https://upvcgo.com/contact/”https://upvcgo.com/contact/
query_api“API catalog: https://upvcgo.com/.well-known/api-catalog”https://upvcgo.com/.well-known/api-catalog
Context
351 sites in the index share the type directory, of which 188 are transactional.
How we grade
Three tiers. Every listing shows which one it has reached, and when. The rubric.
tier 1Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
tier 2Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
tier 3Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
Own this site?
1 check did not pass when we last looked: Markdown twin at a predictable URL. Each is a small, specific fix; the rubric says exactly what we look for.
Behavioural verification — an agent completing your booking, purchase or contact flow end to end, with the date published here — opens to a small founding cohort first. Leave an email to be in it.
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import/export information نسر المتاجرنسر المتاجر offers digital marketing services including ecommerce management, SEO, adverti
digital marketing agency صممليSammly is a B2B technology company offering web design, AI automation, SEO, GEO, Google Ad
technology solutions company أبار جروبأبار جروب provides groundwater well maintenance, pump services, well equipment supply, and
well drilling and maintenance sakan investmentSakan Investment is a real estate investment and marketing company offering property searc
real estate investment Genesis InfotechGenesis Infotech is an ISO 9001:2015 certified IT company in Egypt offering SAP solutions,
it solutions company Record generated from a live database query. Method: about the index.