`dmv_ev_adoption`

Pack: us-dmv · Endpoint: https://gateway.pipeworx.io/us-dmv/mcp

Electric-vehicle adoption from state DMV registration records: how many battery-electric and plug-in hybrid vehicles are registered in a place, which makes and models people actually own there, and what share of all registered vehicles is electric. Covers California (ZIP-level fuel mix with EV share, 2019-2026 snapshots), Washington (VIN-level EV population by county, city, ZIP, make, model), New York (electric registrations by county or ZIP), Maryland (EV and plug-in hybrid by county or ZIP, monthly), Pennsylvania (BEV/PHEV/hybrid plus EV percentage by county, quarterly), Delaware, Hawaii (annual series since 1999) and Connecticut. Answers “how many Teslas are registered in King County”, “EV share in ZIP 94002”, “which Maryland county has the most EVs”, or “EV adoption trend in Hawaii”. Returns plug-in counts, and total-fleet share wherever the state publishes a denominator.

Parameters

Name	Type	Required	Description
`state`	string	yes	Two-letter state code. Supported: CA, CT, DE, HI, MD, NY, PA, WA.
`county`	string	no	County name, e.g. “King” (WA), “Montgomery” (MD/PA), “WESTCHESTER” (NY).
`zip`	string	no	Five-digit ZIP code (CA, WA, NY, MD), e.g. “94002”.
`make`	string	no	Vehicle make substring, e.g. “TESLA”, “RIVIAN”, “HYUNDAI”.
`model_year`	string	no	Four-digit model year, e.g. “2025”.
`year`	string	no	Snapshot year: CA 2019-2026, PA 2023-2026, HI any year from 1999. Defaults to the most recent.
`month`	string	no	Maryland only — YYYY/MM, e.g. “2026/06”. Defaults to the latest month published.
`group_by`	string	no	Breakdown dimension. CA: fuel (default, returns full mix + EV share), zip, make, model_year. WA: county, city, zip, make, model, model_year, ev_type, legislative_district. NY: county, zip, city, make. CT: city, make, model, model_year.
`limit`	number,string	no	Max rows to return (default 25, max 200).
`_apiKey`	string	no	Optional Socrata app token; the public endpoints work without one.

Example call

Arguments

{
  "state": "CA",
  "zip": "94002"
}

curl

curl -X POST https://gateway.pipeworx.io/us-dmv/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"dmv_ev_adoption","arguments":{"state":"CA","zip":"94002"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('dmv_ev_adoption', {
  "state": "CA",
  "zip": "94002"
});

More examples

{
  "state": "WA",
  "county": "King",
  "group_by": "make",
  "limit": 10
}

{
  "state": "MD",
  "county": "Montgomery"
}

{
  "state": "HI",
  "limit": 10
}

Connect

Add this to your MCP client config, or use one-click install buttons:

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

See Getting Started for client-specific install steps.

dmv_ev_adoption