# usgs_earthquakes_by_region

Get recent USGS earthquakes within a radius of a point (latitude/longitude).

Agent View of the PolicyLayer registry record for `usgs_earthquakes_by_region`. HTML page: https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server/usgs-earthquakes-by-region

## Facts

- Tool: `usgs_earthquakes_by_region`
- Server: UnClick (`@unclick/mcp-server`) — https://policylayer.com/tools/io-github-malamutemayhem-unclick-mcp-server.md
- Install: `npx -y @unclick/mcp-server`
- Homepage: https://github.com/malamutemayhem/unclick-agent-native-endpoints.git
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 5 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `lat` | number | yes | Centre latitude |
| `lon` | number | yes | Centre longitude |
| `limit` | number | no | Max results (default 20, max 500) |
| `radius` | number | no | Search radius in km (default 500) |
| `min_magnitude` | number | no | Minimum magnitude |

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": "usgs_earthquakes_by_region",
    "arguments": {
      "lat": 0,
      "lon": 0
    }
  }
}
```

## Why usgs_earthquakes_by_region is rated Low

This tool retrieves and queries earthquake data from USGS based on geographic parameters. It has no side effects, does not modify data, execute code, delete records, or involve financial transactions. It is purely informational retrieval, fitting the 'Read' category.

From the tool's own definition: "Tool name and description indicate 'Get recent USGS earthquakes' - a retrieval operation with 'within a radius of a point (latitude/longitude)', which queries existing seismic data without modifying, deleting, or executing anything."

## Use case

AI agents call usgs_earthquakes_by_region to retrieve information from UnClick 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 UnClick:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "usgs_earthquakes_by_region": {}
  }
}
```

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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-malamutemayhem-unclick-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-malamutemayhem-unclick-mcp-server