ZoneWise MCP Server

Overview

MCP server exposing ZoneWise zoning data to AI assistants (Claude, etc.) through standardized tool interfaces.

Architecture

code

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│  Claude/AI      │────▶│  MCP Server     │────▶│  ZoneWise DB    │
│  Assistant      │◀────│  (FastMCP)      │◀────│  (Supabase)     │
└─────────────────┘     └─────────────────┘     └─────────────────┘

Quick Start

Python (FastMCP)

python

from fastmcp import FastMCP

mcp = FastMCP("ZoneWise")

@mcp.tool()
def zonewise_lookup(jurisdiction: str, district_code: str) -> dict:
    """Look up zoning district information."""
    return lookup_district(jurisdiction, district_code)

if __name__ == "__main__":
    mcp.run()

TypeScript (MCP SDK)

typescript

import { Server } from "@modelcontextprotocol/sdk/server";

const server = new Server({
  name: "zonewise",
  version: "1.0.0"
});

server.setRequestHandler(CallToolRequestSchema, async (request) => {
  if (request.params.name === "zonewise_lookup") {
    return lookupDistrict(request.params.arguments);
  }
});

Available Tools

1. zonewise_lookup

Full district information lookup.

Input:

json

{
  "jurisdiction": "melbourne",
  "district_code": "R-1A"
}

Output:

json

{
  "district_name": "Single-Family Residential",
  "category": "residential",
  "permitted_uses": {...},
  "dimensional_standards": {...},
  "density": {...},
  "municode_url": "https://..."
}

2. zonewise_permitted_uses

Check if a specific use is allowed.

Input:

json

{
  "jurisdiction": "palm_bay",
  "district_code": "C-1",
  "use": "restaurant"
}

Output:

json

{
  "use": "restaurant",
  "status": "conditional",
  "conditions": ["Special exception required", "Parking minimum: 1/100sf"],
  "municode_reference": "Section 185.12"
}

3. zonewise_setbacks

Get setback requirements for a district.

Input:

json

{
  "jurisdiction": "satellite_beach",
  "district_code": "RS-1"
}

Output:

json

{
  "front_ft": 25,
  "side_ft": 7.5,
  "rear_ft": 20,
  "corner_side_ft": 15,
  "waterfront_ft": 50,
  "notes": ["Increased setbacks within FEMA flood zones"]
}

4. zonewise_density

Get density and FAR information.

Input:

json

{
  "jurisdiction": "cocoa_beach",
  "district_code": "R-3"
}

Output:

json

{
  "max_units_per_acre": 12,
  "far": 0.5,
  "max_lot_coverage_pct": 50,
  "max_building_height_ft": 45,
  "min_lot_size_sf": 5000
}

5. zonewise_jurisdiction

Identify jurisdiction from address.

Input:

json

{
  "address": "123 Ocean Ave, Satellite Beach, FL 32937"
}

Output:

json

{
  "jurisdiction": "satellite_beach",
  "confidence": 0.95,
  "method": "address_parse"
}

6. zonewise_site_analysis

Comprehensive site feasibility analysis.

Input:

json

{
  "parcel_id": "12345678",
  "proposed_use": "multi-family",
  "proposed_units": 8
}

Output:

json

{
  "feasible": true,
  "district": "R-3",
  "max_allowed_units": 12,
  "buildable_area_sf": 15000,
  "constraints": ["Flood zone AE", "Wetland buffer"],
  "approval_path": "by_right"
}

Tool Registration Schema

json

{
  "tools": [
    {
      "name": "zonewise_lookup",
      "description": "Look up complete zoning district information for Florida properties. Returns permitted uses, setbacks, density limits, and Municode source URL.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "jurisdiction": {
            "type": "string",
            "description": "Municipality name (e.g., 'melbourne', 'palm_bay', 'satellite_beach')"
          },
          "district_code": {
            "type": "string",
            "description": "Zoning district code (e.g., 'R-1A', 'C-2', 'PUD')"
          }
        },
        "required": ["jurisdiction", "district_code"]
      }
    }
  ]
}

Error Handling

python

class ZoneWiseError(Exception):
    """Base exception for ZoneWise MCP errors."""
    pass

class DistrictNotFoundError(ZoneWiseError):
    """District code not found in jurisdiction."""
    pass

class JurisdictionNotFoundError(ZoneWiseError):
    """Jurisdiction not in coverage area."""
    pass

@mcp.tool()
def zonewise_lookup(jurisdiction: str, district_code: str) -> dict:
    try:
        result = lookup_district(jurisdiction, district_code)
        if not result:
            raise DistrictNotFoundError(
                f"District '{district_code}' not found in {jurisdiction}"
            )
        return result
    except Exception as e:
        return {
            "error": True,
            "error_type": type(e).__name__,
            "message": str(e),
            "suggestion": "Verify district code with local planning department"
        }

Authentication

MCP server supports optional API key authentication:

python

from fastmcp import FastMCP
from fastmcp.auth import APIKeyAuth

mcp = FastMCP("ZoneWise", auth=APIKeyAuth("ZONEWISE_API_KEY"))

Deployment

Local Development

bash

python -m zonewise_mcp.server
# Server running on stdio

Production (Cloudflare Workers)

bash

npx wrangler deploy

Docker

dockerfile

FROM python:3.11-slim
COPY . /app
WORKDIR /app
RUN pip install -r requirements.txt
CMD ["python", "-m", "zonewise_mcp.server"]

Testing

python

import pytest
from zonewise_mcp.server import zonewise_lookup

def test_lookup_valid_district():
    result = zonewise_lookup("melbourne", "R-1A")
    assert result["district_name"] == "Single-Family Residential"
    assert "permitted_uses" in result

def test_lookup_invalid_district():
    result = zonewise_lookup("melbourne", "INVALID")
    assert result["error"] == True

Rate Limiting

python

from fastmcp.middleware import RateLimiter

mcp.add_middleware(RateLimiter(
    requests_per_minute=60,
    requests_per_day=1000
))

Logging

All MCP calls logged to Supabase mcp_requests table:

•Timestamp
•Tool name
•Input parameters
•Response (truncated)
•Latency
•Error (if any)

Integration with Claude

Once deployed, add to Claude's MCP configuration:

json

{
  "mcpServers": {
    "zonewise": {
      "command": "python",
      "args": ["-m", "zonewise_mcp.server"],
      "env": {
        "SUPABASE_URL": "...",
        "SUPABASE_KEY": "..."
      }
    }
  }
}