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 uifoundationskit.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_ui_foundations_kitquery_docs_filesystem_ui_foundations_kitsubmit_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.uifoundations.com/llms.txt”https://docs.uifoundations.com/llms.txt
Context
7 sites in the index share the category software development kit, of which 3 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
Graphy SDKGraphy SDK provides tools to build interactive charts using React, natural language API, a
software development kit Agentica SDKDocumentation for the Agentica SDK, a type-safe framework for building agentic application
software development kit WalletKitWalletKit provides SDKs and APIs for creating smart wallets with gasless transactions for
software development kit Cerebras SDK docsDocumentation for building custom kernels and applications on the Cerebras Wafer-Scale Eng
software development kit ampli^ DocumentationDocumentation for the Ampli^ SDK providing guides, API references, and examples for buildi
software development kit Linktree LinkApp SDKDocumentation for installing and deploying custom LinkApps on Linktree profiles using the
software development kit 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 Record generated from a live database query. Method: about the index.