Address to Census Tract MCP
io.github.theluckystrike/address-to-census-tract-mcptheluckystrikestreamable-httpv1.0.0Scanned
US address to census tract, block group, county FIPS and districts, from the Census Geocoder.
3 tools: 3 only read.
- Reads private data · 0
- Reads text others write · 2
- Can send data out · 0
- No findings
Anlyon alternative
Run the operations that matter as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
3 tools
Only reads 3Show 3 read-only tools
explain_census_geoidSplit 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 Ce…No findings
Why it is in this group
- The name "explain_census_geoid" says "explain": a word for reading.
Description, as the server wrote it 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.
Annotations the server declares
- title: Explain GEOID
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_census_tract_for_addressLook up the census tract for a US street address with the official US Census Bureau Geocoder.Reads text others writeNo findings
Why it is in this group
- The name "get_census_tract_for_address" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it 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.
Annotations the server declares
- title: Census tract for address
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
get_census_tract_for_coordinatesCensus tract, block group, block, county, place and congressional and state legislative districts for a latitude and longitude, from the US Census Bureau Geocoder.Reads text others writeNo findings
Why it is in this group
- The name "get_census_tract_for_coordinates" says "get": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Census tract, block group, block, county, place and congressional and state legislative districts for a latitude and longitude, from the US Census Bureau Geocoder.
Annotations the server declares
- title: Census tract for coordinates
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write2
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http address-to-census-tract https://address-to-census-tract-mcp.lipmichal.workers.dev/mcpclaude mcp add --transport http address-to-census-tract https://address-to-census-tract-mcp.lipmichal.workers.dev/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__address-to-census-tract__get_census_tract_for_address",
"mcp__address-to-census-tract__get_census_tract_for_coordinates",
"mcp__address-to-census-tract__explain_census_geoid"
],
"ask": [],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as address-to-census-tract. Review it before you use it.
Capability tags behind 2 rules
- mcp__address-to-census-tract__get_census_tract_for_address untrusted-input
- mcp__address-to-census-tract__get_census_tract_for_coordinates untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/io.github.theluckystrike/address-to-census-tract-mcp/verify?hash=5b9db7b3b99f5e00cca1c87b59ba1c8bbc5c6d31b6a0557cdaf5a4ac787a6216" | jq -e '.changed == false'Pinned hash 5b9db7b3b99f, from Nov 5, 2026, 13:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/io.github.theluckystrike/address-to-census-tract-mcp/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/io.github.theluckystrike/address-to-census-tract-mcp)Source: MCP Registry · repository. Synced Nov 5, 2026, 13:18 UTC.