# fbi.crime.national_offenses

Retrieve monthly national Uniform Crime Reporting (UCR) crime statistics from the FBI Crime Data Explorer. Returns raw offense counts, rates per 100,000 population, and clearance counts by month for the requested offense type and date range. Offense types include violent-crime, property-crime, homicide, rape, robbery, aggravated-assault, burglary, larceny, motor-vehicle-theft, and arson. Data covers the full US participating law-enforcement agencies (95%+ population coverage). Source: FBI UCR / CDE, US Gov public domain, api.data.gov, no auth required.

Agent View of the PolicyLayer registry record for `fbi.crime.national_offenses`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/fbi.crime.national-offenses

## Facts

- Tool: `fbi.crime.national_offenses`
- Server: Apibase (`apibase-mcp-client`) — https://policylayer.com/tools/io-github-whiteknightonhorse-apibase.md
- Install: `npx -y apibase-mcp-client`
- Homepage: https://github.com/whiteknightonhorse/APIbase
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 3 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `to_month` | string | no | End month in MM-YYYY format (e.g. 12-2022). Defaults to last full year. |
| `from_month` | string | no | Start month in MM-YYYY format (e.g. 01-2019). Data available from 01-1979. |
| `offense_type` | string | yes | FBI UCR offense category. violent-crime (murder+rape+robbery+assault), property-crime (burglary+larceny+auto+arson), or individual offense type |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "fbi.crime.national_offenses",
    "arguments": {
      "offense_type": "<offense_type>"
    }
  }
}
```

## Why fbi.crime.national_offenses is rated Low

Tool retrieves public FBI crime data with no side effects or modifications.

From the tool's own definition: "Retrieve monthly national crime statistics, returns offense counts and rates"

## Use case

AI agents call fbi.crime.national_offenses to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Apibase:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "fbi.crime.national_offenses": {}
  }
}
```

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## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-whiteknightonhorse-apibase · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-whiteknightonhorse-apibase