`wa_dmv_ev_population`

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

Count electric vehicles currently registered in Washington State, from the Department of Licensing (Washington DMV) VIN-level Electric Vehicle Population file — one row per registered vehicle, so these are fleet counts rather than sales or transactions. Breaks down by county, city, ZIP code, make, model, model year, legislative district, electric utility, or vehicle type, and separates battery-electric (BEV) from plug-in hybrid (PHEV). Reports average and median electric range and clean-alternative-fuel-vehicle eligibility. Answers “how many EVs are registered in Washington”, “how many Teslas are in King County”, “EV count by ZIP in Seattle”, “BEV versus PHEV split in Washington”, and “which Washington legislative district has the most electric vehicles”.

Parameters

Name	Type	Required	Description
`county`	string	no	Washington county in plain mixed case, e.g. “King”, “Pierce”, “Snohomish”, “Spokane”.
`city`	string	no	City name in plain mixed case, e.g. “Seattle”, “Bellevue”, “Tacoma”.
`zip`	string	no	Five-digit ZIP code, e.g. “98052”.
`make`	string	no	Vehicle make, upper case in the source and matched as a substring, e.g. “TESLA”, “CHEVROLET”, “RIVIAN”.
`model`	string	no	Model name, upper case in the source and matched as a substring, e.g. “MODEL 3”, “BOLT EV”, “LEAF”.
`model_year`	string	no	Four-digit model year, e.g. “2025”.
`ev_type`	string	no	Drivetrain: “BEV” or “battery electric” for ${BEV_LABEL}, “PHEV” or “plug-in hybrid” for ${PHEV_LABEL}.
`legislative_district`	string	no	Washington legislative district number, e.g. “44”.
`group_by`	string	no	Breakdown dimension: ${Object.keys(EV_GROUPS).join(’, ’)}. Defaults to county.
`limit`	number,string	no	Max rows to return (default 25, max 200). Raise it to 39 to cover every Washington county.

Example call

Arguments

{
  "county": "King",
  "group_by": "make",
  "limit": 5
}

curl

curl -X POST https://gateway.pipeworx.io/wa-dmv/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"wa_dmv_ev_population","arguments":{"county":"King","group_by":"make","limit":5}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('wa_dmv_ev_population', {
  "county": "King",
  "group_by": "make",
  "limit": 5
});

Connect

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

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

See Getting Started for client-specific install steps.

wa_dmv_ev_population