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 its MCP server offers
We connected, ran tools/list, and recorded what came back on 23 Aug 2026. 3 tools, served from qubesync.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_qu_be_sync_apiquery_docs_filesystem_qu_be_sync_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
read“Fetch the complete documentation index at: https://docs.qubesync.com/llms.txt”https://docs.qubesync.com/llms.txt
read“Dig into the API docs”https://docs.qubesync.com/api-reference/introduction
read“Make your first request to QB in a few minutes”https://docs.qubesync.com/quickstart
Context
4 sites in the index share the category accounting api, of which 1 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?
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
Tyms Developer APITyms Developer API provides a REST interface to integrate accounting, banking, and financi
accounting api Bookeeping.ai DocsDocumentation for interacting programmatically with Bookeeping.ai accounts via HTTP API re
accounting api Tight APITight API provides AI-native embedded accounting with features like automated bookkeeping,
accounting api Aptos DocumentationAptos Developer Documentation provides guides, SDKs, and tools to build Web3 applications
blockchain developer documentation Aptos DocumentationAptos Documentation provides developer guides, SDKs, tools, and APIs to build Web3 applica
blockchain developer documentation engineering.teamstation.devDistributed Engineering Operating System doctrine for CTOs using TeamStation AI, Axiom Cor
engineering doctrine Record generated from a live database query. Method: about the index.