# volcano.alerts.cap

Get Common Alerting Protocol (CAP) information for highly elevated volcanoes (ORANGE/WATCH or higher). CAP is the international emergency alert standard used by aviation authorities and civil protection agencies. Returns full CAP metadata: location (lat/lon/elevation), alert certainty, severity, urgency, synopsis text, expiry time, and previous alert state. Only volcanoes that have been at ORANGE or above at least once appear here. Use for integration with emergency management systems, aviation NOTAM workflows, or real-time public alerting pipelines. No auth — USGS public domain.

Agent View of the PolicyLayer registry record for `volcano.alerts.cap`. HTML page: https://policylayer.com/tools/io-github-whiteknightonhorse-apibase/volcano.alerts.cap

## Facts

- Tool: `volcano.alerts.cap`
- 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: 1
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `min_alert_level` | string | no | Minimum alert level to include: ADVISORY, WATCH, or WARNING (default: all elevated) |

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": "volcano.alerts.cap",
    "arguments": {}
  }
}
```

## Why volcano.alerts.cap is rated Low

Retrieves and queries public volcanic alert data with no side effects or modifications.

From the tool's own definition: "Get Common Alerting Protocol information for volcanoes. Returns full CAP metadata. No auth."

## Use case

AI agents call volcano.alerts.cap 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": {
    "volcano.alerts.cap": {}
  }
}
```

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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