# Polyform Severe Weather Scan

> Polyform Severe Weather Scan is a paid API for AI agents from api.polyform.org, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Scans for active severe weather alerts at a geographic location and returns a verdict, alert count, and highest severity level.

## Facts

- Endpoint: GET https://api.polyform.org/v1/geo/severe-weather-scan?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polyform-severe-weather-scan-846747c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ydPPF-j_3lh8j76AvT0Cg

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 polyform-severe-weather-scan-846747c9
```

Example prompt: Are there any active severe weather alerts or warnings I should know about right now? Give me the current threat verdict and how many alerts are active.

## When to prefer this

Choose this endpoint when you need a fast, lightweight severe weather risk verdict without requiring an API key or account setup. It is ideal for AI agents that need to autonomously assess weather safety on a per-call basis using USDC micropayments. Prefer this over full weather forecast APIs when you only need a binary or graded safety verdict and active alert count, not detailed forecast data.

## Known failure modes

- Payment not included or insufficient USDC — returns HTTP 402 requiring micropayment
- Location parameter missing or malformed — returns error with no scan result
- No active alerts in region — returns verdict 'CLEAR' with activeAlerts: 0
- External weather data source unavailable — may return 5xx or stale data
- Rate limiting if micropayment processing is delayed

## How this service works

Pay-per-call data endpoints for AI agents. USDC on Base via x402. No account, no API key — one micropayment per call.

## Output

Returns a JSON object with a 'verdict' string (e.g. 'MONITOR', 'CLEAR', 'DANGER'), an 'activeAlerts' integer count of currently active severe weather alerts, and a 'highestSeverity' string indicating the most severe alert level found (e.g. 'Moderate', 'Extreme').

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "verdict": "MONITOR",
  "activeAlerts": 2,
  "highestSeverity": "Moderate"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polyform-severe-weather-scan-846747c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.polyform.org](https://www.zero.xyz/host/api.polyform.org/llms.txt)