# Address to Census Tract MCP

> US address to census tract, block group, county FIPS and districts, from the Census Geocoder.

- name: io.github.theluckystrike/address-to-census-tract-mcp
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 93/100
- quality: 89/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.theluckystrike%2Faddress-to-census-tract-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.theluckystrike%2Faddress-to-census-tract-mcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "address-to-census-tract-mcp": {
      "type": "http",
      "url": "https://address-to-census-tract-mcp.lipmichal.workers.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 95
- freshness: 100
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-88% +updated-2d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 89/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 745 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 2 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 745 tokens to load them all
- tool set hash: eb9d7354b0b87c665ffdf572fc8cd5bb
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.theluckystrike/address-to-census-tract-mcp.svg)](https://protogrid.dev/servers/io.github.theluckystrike/address-to-census-tract-mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://address-to-census-tract-mcp.lipmichal.workers.dev/mcp (streamable-http, auth none, reachable true, uptime30d 0.875)

## Packages

_none_

## Tools (3)

- `explain_census_geoid`: Split a census GEOID (2 digits state, 5 county, 11 tract, 12 block group, 15 block, or with a 1400000US style prefix) into state and county FIPS, tract code, the tract number as Census displays it (012405 is 124.05), block group and block. No network call.
- `get_census_tract_for_address`: Look up the census tract for a US street address with the official US Census Bureau Geocoder. Returns the matched address, latitude and longitude, the 11-digit tract GEOID and tract number, block group and block GEOIDs, state and county FIPS, incorporated place, county subdivision, congressional district, state senate and house districts, urban area and combined statistical area. Use it for CRA, LIHTC, opportunity zone, grant eligibility and demographic lookups that start from an address.
- `get_census_tract_for_coordinates`: Census tract, block group, block, county, place and congressional and state legislative districts for a latitude and longitude, from the US Census Bureau Geocoder.