What we tested
Probed live on 23 Aug 2026 against rubric v1. 2 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
search“Nemovitosti na prodej a pronájem”https://realfree.sk/nemovitosti
register“Přidat inzerát zdarma”https://realfree.sk/pridat-inzerat
Context
5 sites in the index share the category real estate listings, of which 3 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?
3 checks did not pass when we last looked: Markdown twin at a predictable URL, 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
スムナラSearch over 30,000 used condominiums in the Tokyo metropolitan area by area, price, school
real estate listings Vlastníci.czA Czech real estate portal for direct property sales and rentals from owners without inter
real estate listings RealFree.czRealFree.cz is a Czech real estate portal offering free property listings for sale and ren
real estate listings New Retail SummitNew Retail Summit is a business conference in Bratislava, Slovakia, focused on retail tren
business conference TlapnetTlapnet provides stable and fast internet services with 24/7 support, 30-day trial, and di
internet service provider Fintoro APIFintoro API is a REST API for integrating invoicing, CRM, and inventory systems with third
rest api Record generated from a live database query. Method: about the index.