What we tested
Probed live on 28 Sep 2026 against rubric v1.2. 2 of 5 checks passed. 2 unknown.
PROBE-VERIFIEDtier 2 of 3
What its MCP server offers
We connected, ran tools/list, and recorded what came back on 28 Sep 2026. 13 tools, served from mass-participation-world.myshopify.com — the standard set for sites on shopify.
get_checkoutcreate_checkoutupdate_checkoutcomplete_checkoutcancel_checkoutget_cartcreate_cartupdate_cartcancel_cartget_ordersearch_cataloglookup_catalogget_product
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
buy“”https://mass-participation-world.myshopify.com/api/ucp/mcp
Context
20,608 sites in the index share the type ecommerce. 16,696 transactional sites share it.
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: API catalog. 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
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IT services and cybersecurity Josh SalwayGold Coast-based developer building practical web applications and writing blog articles about his projects and learnings, including iPhone apps for musicians, beekeeping, party games, weight loss, language learning, and printable worksheets.
software development services Click Click MediaDigital marketing agency in Norwest, NSW, Australia offering digital marketing strategy, PPC, SEO, paid social, web design, web development, and custom software solutions including CRM and booking systems.
digital marketing agencies CourseFinderAustralian course comparison platform listing over 500 nationally recognised courses from universities, TAFEs, and RTOs, enabling discovery and enrollment for students, jobseekers, and career changers across Australia.
online courses Chair DinkumAustralian retailer of premium ergonomic office chairs from brands like HAG, Herman Miller, and Humanscale, offering fast shipping nationwide and a Sydney showroom.
furniture and home decor Record generated from a live database query. Method: about the index.
How we found this site: probe discovery. This site didn’t declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. How we choose what to check, and how to opt out →