MCP server exposing 4 tools for hpms-aadt.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/hpms-aadt/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}aadt_near_point — US road traffic volume (AADT, annual average daily traffic) for road segments within a radius of a lat/lon, busiest first. Data: FHWA Highway Performance Monitoring System, per roadway section as reported by the state (not a counter reading). state is required. Returns route_id, functional class, AADT with single-unit and combination-truck splits, milepost range, data_year.aadt_by_route — US road traffic volume (AADT) for segments of a named route in one state, from FHWA HPMS. route is a case-insensitive PREFIX of the state's route_id (state-specific free text, e.g. "I089" in Vermont, "IH0035" in Texas, "SHS_101" in California); use aadt_top_segments to see a state's id style. A highway may carry several ids (e.g. IH0035-KG, IH0035-LG). Busiest segments first.aadt_top_segments — The busiest road segments in a US state by AADT (annual average daily traffic), optionally within one county or functional class (1 Interstate ... 7 Local). From FHWA HPMS; per roadway section as reported by the state. Also the way to learn a state's route_id naming style.aadt_layers — Which FHWA HPMS data years exist for a US state and which columns each year carries (the newest years drop route number/name columns), so callers can pick a year before querying.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/hpms-aadt/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io