Data · Remote MCP server
Census MCP Server
Query U.S. Census Bureau data, variables, and geography via MCP.
What the MCP Registry states
The entry as published to the official MCP Registry (read 2026-10-04), latest version.
- Registry name
io.github.cyanheads/census-mcp-server- Version
- 0.6.0
- Status
- Active
- Category
- data
- Transport
- Streamable HTTP, stdio (local process)
- Package
- npm
- Published
- 2026-09-25
- Updated
- 2026-09-25
- Publisher
- cyanheads (GitHub) · 140 servers with pages here
- Repository
- github.com/cyanheads/census-mcp-server
- Source
- Registry API entry
Remote endpoints
| Transport | URL | Headers declared |
|---|---|---|
| Streamable HTTP | https://census.caseyjhand.com/mcp | None |
Packages
| Registry | Package | Version | Transport |
|---|---|---|---|
| npmruntime: bun | @cyanheads/census-mcp-server | 0.6.0 | stdio |
| npmruntime: bun | @cyanheads/census-mcp-server | 0.6.0 | HTTP |
How to connect Census MCP Server
Census MCP Server is a remote MCP server: there is nothing to install. Its endpoint is https://census.caseyjhand.com/mcp, served over Streamable HTTP. In an assistant that accepts remote MCP servers (often under a setting named connectors, integrations or tools), add a new server and give it this URL; in a client configured by file, add it as a remote (HTTP) server with the same URL.
No headers are declared in the registry entry. If the server needs you to sign in, a client that supports MCP authorization opens the service's own sign-in page when it first connects.
It can also run locally from a Node.js package published to the npm registry: @cyanheads/census-mcp-server version 0.6.0. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y @cyanheads/census-mcp-server@0.6.0; the entry names bun as the runtime. It reads these environment variables: CENSUS_API_KEY and MCP_LOG_LEVEL; set them in the client's configuration for this server.
It can also run locally from a Node.js package published to the npm registry: @cyanheads/census-mcp-server version 0.6.0. The package starts a local server that speaks MCP over Streamable HTTP; the client then connects to it by URL (the entry names bun as the runtime). It reads these environment variables: CENSUS_API_KEY, MCP_HTTP_HOST, MCP_HTTP_PORT, MCP_HTTP_ENDPOINT_PATH, MCP_AUTH_MODE and MCP_LOG_LEVEL; set them in the client's configuration for this server.
In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):
{
"mcpServers": {
"census-mcp-server": {
"command": "npx",
"args": [
"-y",
"@cyanheads/census-mcp-server@0.6.0"
],
"env": {
"CENSUS_API_KEY": "<value>",
"MCP_LOG_LEVEL": "<value>"
}
}
}
}Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect
More from cyanheads (GitHub)
| Server | Runs |
|---|---|
| Bls Labor MCP ServerFetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP. | Remote & Local · HTTP, stdio |
| Bluesky MCP ServerSearch posts, profiles, feeds, threads, and trending topics on Bluesky. | Remote & Local · HTTP, stdio |
| Brapi MCP ServerCollaborative BrAPI v2.1 MCP workspace — studies, germplasm, genotypes across Breedbase, T3, more. | Remote & Local · HTTP, stdio |
| Browser Compat MCP ServerBrowser compatibility and Baseline status for any web feature — offline, from bundled MDN data. | Remote & Local · HTTP, stdio |
| Calculator MCP ServerEvaluate, simplify, and differentiate mathematical expressions. | Remote & Local · HTTP, stdio |
| Cdc Health MCP ServerSearch and query CDC public health data — mortality, vaccinations, surveillance, behavioral risk. | Remote & Local · HTTP, stdio |
| Cern Opendata MCP ServerSearch CERN Open Data, fetch records, files, analysis environments, CMS good-run lists, HLT paths. | Remote & Local · HTTP, stdio |
| cern-inspire-mcp-serverSearch INSPIRE-HEP papers, authors, experiments, HEPData records; get citation metrics and BibTeX. | Remote & Local · HTTP, stdio |
| Chembl MCP ServerLink compounds to protein targets, rank bioactivity, and look up drug mechanisms and indications. | Remote & Local · HTTP, stdio |
| Cisa Cybersecurity MCP ServerCISA KEV with BOD 26-04 deadlines, SSVC prioritization, and the ICS advisory corpus (CSAF). Keyless. | Remote & Local · HTTP, stdio |
| Clinicaltrialsgov MCP ServerSearch ClinicalTrials.gov — find studies, retrieve results, match patients to eligible trials. | Remote & Local · HTTP, stdio |
| Clipboard MCP ServerRead, write, and inspect the system clipboard on macOS, Linux (X11/Wayland), and Windows via MCP. | Local · stdio, HTTP |
More data servers
| Server | Runs |
|---|---|
| Census ACS DemographicsPopulation, income, poverty, education, housing, and commuting from the US Census ACS. | Remote · HTTP |
| Census County Business PatternsEstablishment counts, employment, and payroll by geography and NAICS code from Census CBP. | Remote · HTTP |
| Census Geo MCPCensus Bureau geocoding API: address to coordinates and census geography. | Local · stdio |
| Census MCPUS Census population data by nation, state, and county. Requires a free Census API key. | Local · stdio |
| Census TigerwebUS Census TIGERweb MCP — the Census Bureau's ArcGIS REST geography service. | Remote · HTTP |
| CensysCensys MCP — internet-scan search over the Censys Platform API (censys.com) | Remote · HTTP |
| Central IntelligencePersistent memory for AI agents. Store, recall, and share knowledge across sessions. | Local · stdio |
| Cerebro MCPGovernment tenders, awards and pre-tender pipelines from 21 official sources as MCP tools. | Remote · HTTP |