`hud_crosswalk`

Pack: hud · Endpoint: https://gateway.pipeworx.io/hud/mcp

Map ZIP codes to census tracts, counties, CBSAs, and congressional districts. Returns geographic identifiers. Use to translate between location code formats or join datasets.

Parameters

Name	Type	Required	Description
`type`	number	yes	Crosswalk type: 1=ZIP-to-tract, 2=ZIP-to-county, 3=ZIP-to-CBSA, 4=ZIP-to-congressional-district, 7=county-to-ZIP.
`query`	string	yes	Input value: ZIP code (for types 1-4), or FIPS county code (for type 7). Example: “90210” or “06037”.
`_apiKey`	string	yes	HUD API token

Example call

Arguments

{
  "type": 1,
  "query": "90210",
  "_apiKey": "your-hud-api-key"
}

curl

curl -X POST https://gateway.pipeworx.io/hud/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"hud_crosswalk","arguments":{"type":1,"query":"90210","_apiKey":"your-hud-api-key"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('hud_crosswalk', {
  "type": 1,
  "query": "90210",
  "_apiKey": "your-hud-api-key"
});

More examples

{
  "type": 7,
  "query": "06037",
  "_apiKey": "your-hud-api-key"
}

Response shape

Always returns: crosswalk_type, query, data

Field	Type	Description
`crosswalk_type`	string	Human-readable crosswalk type label
`query`	string	Input query value provided in request
`data`	object	Geographic crosswalk mapping data from HUD API

Full JSON Schema

{
  "type": "object",
  "properties": {
    "crosswalk_type": {
      "type": "string",
      "description": "Human-readable crosswalk type label"
    },
    "query": {
      "type": "string",
      "description": "Input query value provided in request"
    },
    "data": {
      "type": "object",
      "description": "Geographic crosswalk mapping data from HUD API"
    }
  },
  "required": [
    "crosswalk_type",
    "query",
    "data"
  ]
}

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "hud": {
      "url": "https://gateway.pipeworx.io/hud/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

hud_crosswalk