What we tested
Probed live on 23 Aug 2026 against rubric v1. 1 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
contact“Kontakt”https://www.grunerbau.de/kontakt
Context
5 sites in the index share the category construction company, of which 1 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?
4 checks did not pass when we last looked: Markdown twin at a predictable URL, llms.txt, 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
L Projekt d.o.o.L Projekt d.o.o. provides comprehensive construction services including concrete productio
construction company FOR HOME DESIGNFOR HOME DESIGN is a Martinique-based company specializing in the sale, installation, and
construction company CNY Creative ConstructionCNY Creative Construction provides home remodeling, roofing, repairs, and commercial const
construction company Konstruction Group IncToronto construction company specializing in framing, insulation, drywall, structural stee
construction company Business.DigitalBusiness.Digital is a digital agency offering consulting and implementation for websites,
digital agency Elektro HübnerElektro Hübner provides electrical installation and maintenance services including photovo
electrician service posycoPosyco offers flower delivery and subscription services with bouquets hand-tied by local f
flower delivery service Record generated from a live database query. Method: about the index.