What we tested
Probed live on 2 Oct 2026 against rubric v1.2. 3 of 5 checks passed.
PROBE-VERIFIEDtier 2 of 3
✓MCP server card/.well-known/mcp/server-card.json · present; its server answers
not scored ✓Platform-suppliedyes — served from tbr.digital
not scored ✓Other agent files at well-known pathsagent-skills/index.json · oauth-authorization-server · oauth-protected-resource · http-message-signatures-directory · found: Agent Skills index, OAuth authorization server metadata, OAuth protected resource metadata
not scored What its MCP server offers
We connected, ran tools/list, and recorded what came back on 2 Oct 2026. 7 tools.
get_platform_infosearch_coursessearch_postsget_course_detailsget_post_detailsget_event_detailsget_lecturer_profile
Context
771 sites in the index share the category online courses. 159 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?
2 checks did not pass when we last looked: Markdown negotiation, Markdown twin at a predictable URL. Each is a small, specific fix; the rubric says exactly what we look for.
Behavioural verification — an agent completing your key actions 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
David Bueno VallejoSpanish professor and researcher David Bueno Vallejo offers technology consulting, AI training diagnostics, and publishes projects, blog posts, conferences, and educational resources on his personal website.
online courses EverySubscription service offering AI-focused ideas, apps, training, and editorial columns from AI practitioners, including AI-powered software products and livestreamed camps, founded in 2020 and cited by major publications.
online courses FaheemArabic AI-powered learning assistant aligned with the Egyptian curriculum, offering adaptive learning conversations, interactive tests with analytics, study booklets, and voice-first Q&A for Arabic-speaking students, parents, and educational institutions in Egypt.
online courses 圖解力學院A Taiwanese platform focused on visual thinking, note-taking, and communication through drawing to help users overcome fear of drawing and develop visual explanation skills for personal growth.
online courses 富果線上學院An online academy focused on investment confidence, enjoyment of returns, cognitive upgrading, and successful decision-making, serving a Chinese-speaking audience.
online courses 小大人表達學院A Taiwanese platform focused on training communication and expression skills to help individuals consciously improve their speaking abilities and shape their personal image.
online courses 職人養成學院Taiwan-based music academy offering courses that teach correct musical thinking and essential skills, focusing on learning music as a creative activity rather than exam preparation.
online courses Mofans 墨樊創顧｜線上學習Online learning platform for office workers and freelancers in Taiwan, offering courses on Shopee e-commerce, social media management, beauty industry marketing, e-commerce marketing, entrepreneurship, and sales to turn skills into income.
online courses Record generated from a live database query. Method: about the index.