MCP server

US Flood Zone & Property Risk (FEMA, NOAA, USGS, Census)

com.thestackunderflow/datum-property

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

FEMA flood zone, hazard history and demographics for any US address, with sources on every answer.

Website

At a glance

Type

MCP server

Publisher

thestackunderflow.com (verified by the MCP Registry)

Status

Working at last check

Tools

6

Token cost

About 2,973 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http datum-property https://mcp.thestackunderflow.com/mcp/property

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.datum-property]
url = "https://mcp.thestackunderflow.com/mcp/property"

Gemini CLI

{"mcpServers":{"datum-property":{"httpUrl":"https://mcp.thestackunderflow.com/mcp/property"}}}

Cursor

{"mcpServers":{"datum-property":{"url":"https://mcp.thestackunderflow.com/mcp/property"}}}

VS Code

{"servers":{"datum-property":{"type":"http","url":"https://mcp.thestackunderflow.com/mcp/property"}}}

Antigravity

agy mcp add datum-property https://mcp.thestackunderflow.com/mcp/property

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"datum-property","server_url":"https://mcp.thestackunderflow.com/mcp/property","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"datum-property","server_url":"https://mcp.thestackunderflow.com/mcp/property"}

Tools

• address_profile ~523 tokens
  One-call US property report for an address or coordinate: FEMA flood zone (SFHA, base flood elevation, FIRM panel), county demographics, and 10-year hazard history (FEMA disaster declarations, NOAA storm events, USGS earthquakes), with a plain-English summary and a source for every part. Everything
• admin_areas ~324 tokens
  State and county for a coordinate, with Census GEOIDs. Free - answered from boundaries the platform ingests and holds, with no provider call. Point-in-polygon against Census TIGER/Line boundaries (§22.2). Returns the administrative areas containing the point, most specific first, each with the GEOI
• area_demographics ~330 tokens
  Population and median household income for the county containing a point, from American Community Survey 5-year estimates. Composes two ingested datasets (§22.2): TIGER/Line resolves the coordinate to a county GEOID, then the ACS layer is read by that key. Pass `geoid` directly to skip the boundary
• census_geocode ~342 tokens
  Free. Turns a US street address into a latitude/longitude plus the state, county and census tract it is in (with GEOIDs), using the U.S. Census Bureau geocoder. Use it first, then pass the point to the paid property tools. One-line address to point, with the Census Bureau's own match: the matched a
• flood_zone ~704 tokens
  FEMA flood zone for a US address or coordinate: zone (A, AE, VE, X ...), whether it is in the Special Flood Hazard Area (where lenders generally require flood insurance), base flood elevation with its datum, FIRM panel and effective date, NFIP community, and any Letter of Map Revision. Live from FEM
• hazard_history ~750 tokens
  Natural-hazard history for a US county or address: FEMA declarations (major disasters, emergencies and fire management, by type, with links), NOAA storm events with deaths and reported property damage by type and year, and USGS earthquakes within 100 km since 1950. One call, each source reported apa

Browse

• Forms and surveys
• Maps and places
• Government and public data

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