known·good search mcp servers how we grade about the index

search / business / www.charlieobaugh.com

Charlie Obaugh Auto Group

www.charlieobaugh.com · visit site →

Probe-verified · tier 2 · checked 23 Aug 2026

Charlie Obaugh Auto Group offers new, used, and certified pre-owned vehicles from multiple brands including Kia, Chevrolet, and GMC.

auto dealerUSvehiclescarstrucksinventory

What we tested

Probed live on 23 Aug 2026 against rubric v1. 5 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. 12 tools, served from ai.charlieobaugh.com.

search_inventoryget_vehicleget_vehicle_detailsget_value_propslist_inventoryget_oem_offersget_dealer_specialssearch_offersget_window_stickerdecode_vinget_dealer_infoget_inventory_stats

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“New cars and trucks, 348 vehicles”
https://ai.charlieobaugh.com/inventory/cars-trucks/new
query_api“GET https://ai.charlieobaugh.com/api/ucp/ask?q=%3Cyour+question+here%3E&token=...”
https://ai.charlieobaugh.com/api/ucp/ask

Context

2 sites in the index share the category auto dealer.

How we grade

Three tiers. Every listing shows which one it has reached, and when. The rubric.

tier 1
Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
✓
tier 2
Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
this site · 23 Aug 2026
tier 3
Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
coming
Own this site?

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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Record generated from a live database query. Method: about the index.