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
search“Vyhledávač 50 000+ zájezdů od českých cestovních kanceláří”https://www.cestujlevne.com/zajezdy
search“Srovnávač letenek, akční a chybové tarify”https://www.cestujlevne.com/letenky
query_api“Tour search API”https://www.cestujlevne.com/api/v1/tours/search
query_api“Tour destinations”https://www.cestujlevne.com/api/v1/tour-destinations
query_api“Airports”https://www.cestujlevne.com/api/v1/airports
query_api“Hotel search”https://www.cestujlevne.com/api/v1/hotels
query_api“Hotel detail”https://www.cestujlevne.com/api/v1/hotels/{id}
query_api“Tour calendar prices”https://www.cestujlevne.com/api/v1/tours/calendar
query_api“Tour min prices by country”https://www.cestujlevne.com/api/v1/tours/aggregates/min-prices-by-country
query_api“Tour favorite countries”https://www.cestujlevne.com/api/v1/tours/aggregates/favorite-countries
contact“Kontakt”https://www.cestujlevne.com/kontakt
Context
2 sites in the index share the category travel portal.
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.
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energy company Record generated from a live database query. Method: about the index.