How do I get a HUD User Access Token?

Register for an account at the HUD User API page (https://www.huduser.gov/portal/dataset/uspszip-api.html), confirm your email, and generate a token in your user dashboard.

Which year of data is used?

By default, the API returns the most recent available data. You can optionally specify a year and quarter in each tool.

Does it support mapping Tracts back to ZIP codes?

Yes, tools like tract_to_zip and county_to_zip allow bidirectional crosswalking between geography IDs and ZIP codes.

HUD User (USPS Crosswalk) MCP Server for Google ADK 10 tools — connect in under 2 minutes

Name: HUD User (USPS Crosswalk)
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 10 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add HUD User (USPS Crosswalk) as an MCP tool provider through the Vinkius and your ADK agents can call every tool with full schema introspection.

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ASK AI ABOUT THIS MCP SERVER

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Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token — get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="hud_user_usps_crosswalk_agent",
    instruction=(
        "You help users interact with HUD User (USPS Crosswalk) "
        "using 10 available tools."
    ),
    tools=[mcp_tools],
)

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About HUD User (USPS Crosswalk) MCP Server

Empower your AI agents to navigate US geography with precision. This MCP server connects to the HUD User Data API to provide crosswalks between USPS ZIP codes and Census Bureau geographies including Tracts, Counties, CBSAs, and Congressional Districts. Essential for urban planning, demographics analysis, and real estate data processing.

Google ADK natively supports HUD User (USPS Crosswalk) as an MCP tool provider — declare the Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 10 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

The HUD User (USPS Crosswalk) MCP Server exposes 10 tools through the Vinkius. Connect it to Google ADK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect HUD User (USPS Crosswalk) to Google ADK via MCP

Follow these steps to integrate the HUD User (USPS Crosswalk) MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 10 tools from HUD User (USPS Crosswalk) via MCP

Why Use Google ADK with the HUD User (USPS Crosswalk) MCP Server

Google ADK provides unique advantages when paired with HUD User (USPS Crosswalk) through the Model Context Protocol.

Google ADK natively supports MCP tool servers — declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with HUD User (USPS Crosswalk)

Production-ready features like session management, evaluation, and deployment come built-in — not bolted on

Seamless integration with Google Cloud services means you can combine HUD User (USPS Crosswalk) tools with BigQuery, Vertex AI, and Cloud Functions

HUD User (USPS Crosswalk) + Google ADK Use Cases

Practical scenarios where Google ADK combined with the HUD User (USPS Crosswalk) MCP Server delivers measurable value.

Enterprise data agents: ADK agents query HUD User (USPS Crosswalk) and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine HUD User (USPS Crosswalk) tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query HUD User (USPS Crosswalk) regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including HUD User (USPS Crosswalk)

HUD User (USPS Crosswalk) MCP Tools for Google ADK (10)

These 10 tools become available when you connect HUD User (USPS Crosswalk) to Google ADK via MCP:

cbsa_to_zip

Maps CBSAs to ZIP codes

cbsadiv_to_zip

Maps CBSA Divisions to ZIP codes

cd_to_zip

Maps Congressional Districts to ZIP codes

county_to_zip

Maps Counties to ZIP codes

tract_to_zip

Maps Census Tracts to ZIP codes

zip_to_cbsa

Maps ZIP codes to Core Based Statistical Areas (CBSA)

zip_to_cbsadiv

Maps ZIP codes to CBSA Divisions

zip_to_cd

Maps ZIP codes to Congressional Districts

zip_to_county

Maps ZIP codes to Counties

zip_to_tract

Maps ZIP codes to Census Tracts

Example Prompts for HUD User (USPS Crosswalk) in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with HUD User (USPS Crosswalk) immediately.

"Find the census tracts associated with ZIP code 90210."

"Which ZIP codes are in county FIPS 06037?"

"Get the congressional districts for ZIP code 10001."

Troubleshooting HUD User (USPS Crosswalk) MCP Server with Google ADK

Common issues when connecting HUD User (USPS Crosswalk) to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

HUD User (USPS Crosswalk) + Google ADK FAQ

Common questions about integrating HUD User (USPS Crosswalk) MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.