Tx Dmv MCP Server

@pipeworx/tx-dmv

Texas DMV (TxDMV) MCP — statewide vehicle, pickup and motorcycle registration totals by fiscal year, from TxDMV's own published series.

Tools

• tx_dmv_vehicle_registrations(fiscal_year?, limit?) — total vehicles registered in Texas for a fiscal year, split into passenger cars, pickup trucks of one ton or less and motorcycles, each with its share of the fleet. Answers "how many vehicles are registered in Texas", "how many motorcycles are registered in Texas", and growth across years.

Auth

Keyless.

Grain and vintage — read this before quoting a number

Two things about this dataset trip people up, so both are reported on every response:

1. Statewide only. TxDMV publishes one row per fiscal year for the whole state. There is no county, city or ZIP breakdown in this series, and no make/model/fuel split. Passing county, zip, make, model_year or fuel_type returns { found: false, reason: "grain_unavailable" } with a hint rather than silently ignoring the argument. For a ZIP-level fleet breakdown, ca_dmv_vehicle_registrations covers California at ZIP × make × model-year × fuel.
2. The series stops at FY2021. TxDMV last refreshed it on 2023-03-06, so it covers fiscal years 2001 through 2021 and recent years are simply absent. as_of carries the refresh date, covers_fiscal_years the span, and a note says so in words. Asking for fiscal_year="2024" returns fiscal_year_unavailable rather than an empty row list.

total_vehicles is only set when a single fiscal year is requested, because that row genuinely is the whole Texas fleet for that year. Rows from different fiscal years are not summed: they are cumulative snapshots of largely the same vehicles, so a sum would double-count every car that stayed registered.

Verified live 2026-07-29: FY2001 total_all_vehicles_registered = 17,906,116; FY2021 = 25,236,442.

Data sources

• https://data.texas.gov/resource/cbmj-zeje.json — TxDMV "Passenger Vehicle, Motorcycle, and Pickup Truck Registrations by Year". 21 rows, FY2001–FY2021.
• https://data.texas.gov/api/views/cbmj-zeje.json — rowsUpdatedAt, used for as_of.

The three *_of_all_vehicles columns are fractions of 1 (0.5831), not percentages; the pack converts them to percentages. fiscal_year is stored as text, so it is filtered with a string equality and ordered as a string — which is safe for four-digit years.

Quick Start

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

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

Or connect to the full Pipeworx gateway for access to all 1392+ data sources:

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

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Texas DMV data" })

The gateway picks the right tool and fills the arguments automatically.

More

• All tools and guides
• pipeworx.io

License

MIT