Wi Dmv MCP server

@pipeworx/wi-dmv

Wisconsin DMV (WisDOT) customer service centers, with the services each individual counter actually performs. Keyless.

Part of Pipeworx — an MCP gateway connecting AI agents to 1476+ live data sources.

Why Wisconsin gets its own pack

This came out of splitting a single multiplexed us-dmv tool into one pack per state agency. Wisconsin's grain is a per-station capability matrix — does this counter issue commercial plates, give the written knowledge test in a language other than English, take cash — which has nothing in common with California's ZIP-level registration snapshot or New York's record-level file. A union schema across states leaves most arguments ignored on every call, so Wisconsin's arguments are Wisconsin's.

Tools

Filters: city, county, zip (prefix match), name, service (matches both the service labels and the payment methods), limit.

The distinctive field

DRVKNLGTESTVARLANGFL — surfaced as the service label "knowledge test in multiple languages"** — records, per counter, whether the written knowledge test is offered in languages beyond English. No other state DMV layer publishes this. It is what makes "which Wisconsin DMV gives the written test in Spanish" answerable at all: 79 of the 88 centers do.

Auth

None. dotmaps.wi.gov is a public WisDOT ArcGIS host.

Gotchas worth knowing

and answered in ~1s on the retry; during this pack's smoke test one call took 15.3s (a stall plus a successful retry) while the identical call either side of it took 93ms. Queries run on the shared helper's 15s budget with one retry, and a genuine stall returns { error, hint } telling the caller to retry rather than an empty office list that reads as "Wisconsin has no DMV offices".

• WisDOT's ArcGIS host is intermittently slow. It overran a 12s budget on a production call

centers in mid-2026 and 88 as of 2026-07-30. Nothing in this pack hardcodes the number; responses carry statewideofficecount from the live layer, and the not-found hint quotes the live figure.

• The statewide count moves. WisDOT opens and closes rural counters — the layer held 92

service, so no outSR=4326 geometry round-trip is needed.

• LAT/LON are real attribute columns on this layer, unusually for a state ArcGIS

number, so phone is null by design rather than by omission.

• There are no per-station phone numbers. WisDOT routes every center through one statewide

absent from hours is a closed day. Many rural counters open one or two days a week.

• Hours list open days only. STNHRS carries the literal CLOSED for the rest; a day

free text naming transactions that specific center sends elsewhere (salvage titles, personalised plates, commercial over 10,000 lb) — it is returned verbatim, whitespace-collapsed.

• servicesexcluded is the interesting negative space. WisDOT's STNEXLDPRDTDSPL is

service: "commercial vehicle plates".

• service matches payment methods too, so service: "cash" is a valid filter alongside

Data source

— verified live 2026-07-30

• WisDOT ArcGIS agohub/DMVSERVICECENTER/MapServer/0

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "wi-dmv": {
      "url": "https://gateway.pipeworx.io/wi-dmv/mcp"
    }
  }
}

What this endpoint actually serves

Shortened. The full README is on GitHub.