What we tested
Probed live on 23 Aug 2026 against rubric v1. 2 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 humancollective.main-kill-isr.mintlify.me — the standard set for sites on mintlify.
search_firebridgequery_docs_filesystem_firebridgesubmit_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
search“Search... ⌘ K”
contact“Github”https://github.com
Context
7 sites in the index share the category developer tools, of which 2 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?
3 checks did not pass when we last looked: Markdown negotiation, Markdown twin at a predictable URL, 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
All Tools HubA collection of free browser-based developer utilities with REST API endpoints and agent p
developer tools ToolsTools provides documentation for PailFlow's tiny-worker product and Bots API, plus Bubble
developer tools KanaKana provides developer tools for pricing and packaging with flexible APIs and SDKs for mo
developer tools ShipDocsShipDocs is an AI tool that generates and maintains documentation for private code reposit
developer tools MetalBear 🐻MetalBear provides mirrord, a Kubernetes developer tool enabling AI-powered teams to run c
developer tools 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.