What we tested
Probed live on 23 Aug 2026 against rubric v1. 3 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 its MCP server offers
We connected, ran tools/list, and recorded what came back on 23 Aug 2026. 3 tools, served from laozhangai-edd05f2c.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_老张apiquery_docs_filesystem_老张apisubmit_feedback
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
register“仅支持 Gmail 邮箱注册；企业用户请先邮件申请白名单”https://api2.laozhang.ai/register/?aff_code=Snip
contact“发送邮件至 `hi@laozhang.ai` 联系客服申请白名单开通”mailto:hi@laozhang.ai
Context
2,006 sites in the index share the type saas, of which 1,410 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?
2 checks did not pass when we last looked: llms.txt, 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.
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digital marketing agency Record generated from a live database query. Method: about the index.