The Offenders.io MCP Server lets AI assistants like Claude, Cursor, and other MCP-compatible clients search the sex offender registry directly. No API key required for anonymized data.

Quick Start

Point any MCP client to:

https://mcp.offenders.io/mcp

Claude Desktop — add to your config:

// ~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "offenders": {
      "command": "npx",
      "args": ["mcp-remote", "https://mcp.offenders.io/mcp"]
    }
  }
}

Cursor / Other MCP Clients — enter the URL https://mcp.offenders.io/mcp in your MCP server settings.

Available Tools

search_offenders_by_location

Search for registered sex offenders near a GPS coordinate.

Parameters:

lat (number) — Latitude

lng (number) — Longitude

radius (number) — Radius in miles (default: 1)

Returns: Returns anonymized offender records: age, sex, race, risk level, offenses, ZIP code. Up to 5 pages of results.

get_offender_stats

Get a quick count of offenders near a location.

Parameters:

lat (number) — Latitude

lng (number) — Longitude

radius (number) — Radius in miles (default: 1)

Returns: Returns approximate total count without detailed records.

api_info

Get information about the full Offenders.io API.

Returns: Returns API capabilities, pricing, and documentation links.

Example Prompts

Once connected, try asking your AI assistant:

“Are there any registered sex offenders within 2 miles of 40.7128, -74.0060?”
“How many sex offenders are near ZIP code 90210?”
“Tell me about the Offenders.io API pricing and features.”

Data & Limitations

The MCP server provides anonymized data from the lite API — no names or photos. For full offender details including names, photos, and addresses, use the REST API with a paid API key.

Live Example

Here's what a real MCP interaction looks like when you ask Claude about sex offenders near a location:

// You ask Claude:
"Are there sex offenders within 1 mile of 34.0522, -118.2437?"

// Claude calls the MCP tool automatically:
Tool: search_offenders_by_location
Input: { "lat": 34.0522, "lng": -118.2437, "radius": 1 }

// MCP server returns anonymized results:
{
  "total": 47,
  "offenders": [
    { "age": 42, "sex": "Male", "risk": "Moderate", "zip": "90012" },
    { "age": 55, "sex": "Male", "risk": "High", "zip": "90013" },
    // ... 45 more results
  ]
}

// Claude summarizes the results in natural language

More example prompts to try:

“How many sex offenders live within 2 miles of this school at 40.748, -73.985?”
“Give me a risk breakdown of offenders near ZIP 60601”
“What does the Offenders.io API cost and what data does it return?”

Need Full Access?

Get names, photos, and complete records with our REST API. First 50 requests free.

Get API Key

Or follow our step-by-step build guide