The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Hawaii Vehicle Registrations listing page.
Hawaii vehicle-registration MCP — the statewide cumulative count of hybrid and electric vehicles registered in Hawaii, as an annual series from 1999 to the present.
Part of Pipeworx — an MCP gateway connecting AI agents to 1476+ live data sources.
hi_dmv_ev_registrations(year?, limit?) — hybrid and battery-electric counts per year with a
combined total, plus the year-over-year change and growth rate. Answers "how many electric
vehicles are in Hawaii", "how many EVs were registered in Hawaii in 2020", "EV adoption trend
in Hawaii".Keyless.
Vehicle registration in Hawaii is administered by the four counties — Honolulu, Hawaii, Maui and Kauai — not by a state motor-vehicle agency. The statewide statistics are compiled and published by DBEDT, the state Department of Business, Economic Development and Tourism. That is why this pack has one statewide series and no office locator, and why the series carries no county split: the counties register, DBEDT aggregates.
A clean annual time series, one row per year, 1999 through 2024 (26 rows). Counts are
cumulative registered vehicles at the end of each year, so a rising total means the fleet
grew; the tool computes change_from_prior_year and growth_pct per row so a trend question
needs no arithmetic from the caller. Rows are never summed across years — they are cumulative
snapshots of largely the same vehicles.
Verified live 2026-07-29: 2024 → hybrid 31,284, electric 35,242, total 66,526 · 2023 → 27,658 / 29,239 / 56,897 · 1999 → electric 10.
https://opendata.hawaii.gov/api/3/action/datastore_search?resource_id=4d4c0403-8f04-4f74-879d-64669f1437b1
— DBEDT "Cumulative Hybrid & Electric Vehicles Registered".Two shapes worth knowing before touching this resource:
"31,284"), not numbers." - ", not null and not zero. 1999 has
no hybrid figure at all; reading that placeholder as 0 invents a data point, so the pack
resolves it to null and the response note says what null means.Year, Hybrid Electric Vehicles,
Electric Vehicle, Total.Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
tools/list at https://gateway.pipeworx.io/hi-dmv/mcp returns the tools in the table
above plus the shared Pipeworx meta-tools — ask_pipeworx,
discover_tools, search_within, remember/recall and the rest of the
gateway-wide set. So the tool count you see is larger than this table: a
single-pack endpoint currently lists roughly 30 shared tools alongside the
pack's own. The connection's initialize response states its exact scope, and
is the authoritative answer for a given day.
This is deliberate, not multiplexing by accident. The meta-tools are what let a
scoped connection answer a question this pack does not cover — via
ask_pipeworx, which routes across the whole catalog — without you adding a
second MCP server. There is currently no way to mount a pack endpoint without
them; if the extra schemas cost you more context than the routing is worth,
connect to the full gateway once rather than to several pack endpoints.
Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:
Both URLs reach the same gateway and the same 1476+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:
The gateway picks the right tool and fills the arguments automatically.
MIT