What we tested
Probed live on 23 Aug 2026 against rubric v1. 4 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“Contact”https://ptk.dev/en/#contact
query_api“API catalog”https://ptk.dev/.well-known/api-catalog
Context
5 sites in the index share the category software developer portfolio.
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?
1 check did not pass when we last looked: 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
Wensen WuWensen Wu builds software for critical systems, AI-native aviation operations, and LLM eva
software developer portfolio Sheikh HeeraPersonal site of Sheikh Heera, a software developer and CTO at authLab, sharing blog posts
software developer portfolio Abdulmumin YaqeenPersonal site of Abdulmumin Yaqeen showcasing software projects, writing, and open source
software developer portfolio FylleFylle is an AI-native content intelligence system structuring company knowledge into a per
content intelligence platform SeminaiSeminai produces digital farm records from invoices, verifying dosages and compliance with
digital farm record EB StoreEB Store is the official online shop of Belotti Informatica & Elettronica offering PCs, TV
electronics store Record generated from a live database query. Method: about the index.