What we tested
Probed live on 23 Aug 2026 against rubric v1. 3 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 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
register“Sign Up Online”https://purplecowinternet.com/
search“Check Address”https://purplecowinternet.com/
Context
7 sites in the index share the category internet service provider, of which 4 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?
2 checks did not pass when we last looked: API catalog, MCP server answers. 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.
Related verified sites
JosiJosi provides fast and stable internet, TV packages, and mobile services in the Podkrkonoš
internet service provider RocketnetRocketnet provides high-speed optical, wireless, and mobile internet services with TV pack
internet service provider Rtyně.netRtyně.net provides optical, wireless, and mobile internet services with TV packages in the
internet service provider TlapnetTlapnet provides internet services with 24/7 support, installation, customer portal, and a
internet service provider TlapnetTlapnet provides stable and fast internet services with 24/7 support, 30-day trial, and di
internet service provider Единый Оператор СвязиProvides unlimited fiber optic internet and television services in Barnaul with various ta
internet service provider XonarkXonark provides a Leakage Prevention System for dental practices to identify and recover l
dental practice TownSpotTownSpot is a hyperlocal event discovery site providing local event listings, feeds, and A
event discovery site Record generated from a live database query. Method: about the index.