# US Volcano Hazard Alert Status API

> US Volcano Hazard Alert Status API is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns all US volcanoes currently at elevated alert levels (ADVISORY, WATCH, or WARNING) with their aviation color code, observatory, and latest notice time as normalized JSON.

## Facts

- Endpoint: POST https://x402.forgemesh.io/volcano-activity
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-volcano-hazard-alert-status-api-5ddeacee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5R_MP1B7Wtn0kAlSFu3wK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability us-volcano-hazard-alert-status-api-5ddeacee -d '<json body>'
```

Example prompt: Are any US volcanoes currently under an elevated alert — like ADVISORY, WATCH, or WARNING — and if so, what are their aviation color codes and which observatory is tracking them?

## When to prefer this

Use this endpoint when you need a normalized, ready-to-parse JSON snapshot of current US volcano hazard status across all observatories. Ideal for aviation routing decisions, hazard-monitoring dashboards, or risk-alert agents that need alert levels and aviation color codes in one call. Prefer this over scraping USGS directly when you need structured JSON output, consistent schema, and multi-observatory coverage in a single request.

## Known failure modes

- Empty list returned when no volcanoes are elevated — not an error, just no current hazards
- Payment failure if USDC balance insufficient for the $0.005 per-call fee
- Stale data up to 5 minutes old due to caching — not suitable for sub-minute monitoring
- No historical data — only current snapshot is available
- May not reflect very recent USGS updates within the cache window

## How this service works

Volcano hazard API: every US volcano currently at an elevated alert level — alert level (NORMAL/ADVISORY/WATCH/WARNING), aviation color code, observatory, and latest notice time — as normalized JSON. Covers Alaska, Hawaii, the Cascades, Yellowstone, and the Mariana Islands. Use for aviation routing, hazard-monitoring dashboards, and risk-alert agents. Public-domain government data, cached 5 minutes. Returns an empty list when no volcanoes are elevated.

## Output

A JSON list of all US volcanoes currently at elevated alert levels, each with volcano name, alert level (NORMAL/ADVISORY/WATCH/WARNING), aviation color code (GREEN/YELLOW/ORANGE/RED), the responsible observatory, and the timestamp of the latest notice. Returns an empty list when no volcanoes are elevated. Data is cached and refreshed every 5 minutes from USGS public-domain sources. Covers Alaska, Hawaii, the Cascades, Yellowstone, and the Mariana Islands.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [
   {
    "obs_abbr": "avo",
    "color_code": "ORANGE",
    "alert_level": "WATCH",
    "volcano_name": "Great Sitkin"
   }
  ],
  "attribution": "U.S. Geological Survey Volcano Hazards Program / HANS (public domain)"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-volcano-hazard-alert-status-api-5ddeacee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.forgemesh.io](https://www.zero.xyz/host/x402.forgemesh.io/llms.txt)