MCP server exposing 5 tools for census.
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/census/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}census_acs — Median home value and median rent for a US ZIP CODE, city, town, county or state, from the American Community Survey — the keyless way to answer "what do homes cost in 33158" or "median home price in Miami-Dade County" at a grain below metro level. Pass the geography the way a person says it: a 5-digit ZIP ("33158"), a place with its state ("Palmetto Bay, FL"), a county ("Miami-Dade County, FL"), or a state ("Florida"); FIPS codes and raw Census "for" syntax also work. Median home value is B25077_001E and median gross rent is B25064_001E (B25003 is tenure counts, not rent); the same call also serves ownership rates, vacancy and any other ACS variable code. Values are 5-year survey estimates, so they describe a period rather than this month's asking prices.census_building_permits — Check monthly building permits for new residential construction by geography. Returns count of authorized privately-owned housing units and construction activity trends.census_housing_starts — Get residential construction pipeline by geography: new starts, units under construction, and completed units. Returns housing supply and activity trends.census_homeownership — US homeownership rate and housing vacancy rates by quarter, from the Census Housing Vacancy Survey (HVS) — the official source. Returns `headline` (the national homeownership rate as a percent) plus the rental and homeowner vacancy rates. Defaults to the latest published quarter.census_available_datasets — Discover Census datasets and their variables. Returns dataset names, descriptions, and variable codes (e.g., B25001_001E) for querying with other census tools.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/census/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io