Environment variable CENSUS_API_KEY
No value of this variable is held in this registry. The registry knows only the name the source states.
Entries naming CENSUS_API_KEY as an ordinary environment variable
| Census (ACS by ZIP) | io.github.mcpwright/census-mcp | U.S. |
|---|---|---|
| U.S. Government Open Data | io.github.lzinga/us-gov-open-data-mcp | Open data from 40+ U.S. |
| civic-library-mcp in namespace io.github | io.github.adriancisnerosspeed-hub/civic-library-mcp | US civic & property data: geocoding, census tracts, Opportunity Zones, FEMA flood zones. |
| mcp-sam-gov in namespace io.github | io.github.cliwant/mcp-sam-gov | Keyless-first MCP: 153 tools for US federal + state/local (SLED) contracting, spending & regulation |
| census-mcp-server in namespace io.github | io.github.cyanheads/census-mcp-server | Query U.S. |
| MCP server in namespace io.github | io.github.geowire/geowire | Place search, directions, isochrones & area analysis across 10 map providers. |
Start of the description from the source registry (first sentence, at most 160 characters), untranslated and unverified
Entries naming CENSUS_API_KEY as a secret required variable
No entry.
What the sources write about this name
| Census (ACS by ZIP) | Free Census API key (get one at https://api.census.gov/data/key_signup.html). Required for the one-time bulk download of the ACS dataset. |
|---|---|
| U.S. Government Open Data | Census Bureau API key |
| civic-library-mcp in namespace io.github | Free Census API key (https://api.census.gov/data/key_signup.html). Required only for the get_tract_demographics tool; all other tools work with no key. |
| mcp-sam-gov in namespace io.github | Required only for census_business_patterns (the Census Data API has no keyless tier); every other tool works without it. |
| census-mcp-server in namespace io.github | Census Bureau API key from api.census.gov/data/key_signup.html. Required for census_query_data and census_compare_geographies; variable search and geography resolution work without it. |
| MCP server in namespace io.github | Optional (free). Enables US Census demographics (population, median age, household income) for area analysis. |
Taken verbatim from the source, one line per entry. The text is a vendor's own statement and is neither checked nor shortened.
To the environment variable index
Version of the extraction rule: 1.1. The names are formed by splitting the stored original data at the separator this registry set when reading it in. Counted across the 41,867 published entries.
tracevero · https://tracevero.com/variable/CENSUS_API_KEY