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“Search”https://pametalindex.com/search
book“get tickets”
Context
8 sites in the index share the category music directory, of which 8 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, llms.txt, 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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music directory Ohio Metal IndexDirectory listing over 600 Ohio metal bands with genre browsing, concert listings, music s
music directory South American Metal IndexDirectory listing over 4000 South American metal bands with genre browsing, concert info,
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music directory US Metal IndexDirectory of over 14,000 US metal bands with genre browsing, concert listings, music strea
music directory EFROSEFROS provides cybersecurity, managed IT, 24/7 SOC, and AI governance services under one S
cybersecurity managed services provider Record generated from a live database query. Method: about the index.