# ForgeMesh Heat Alert Feed

> ForgeMesh Heat Alert Feed is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns all currently active US Heat Advisory, Extreme Heat Warning, and Excessive Heat Warning alerts as normalized JSON, including affected zones, severity, and full alert text.

## Facts

- Endpoint: POST https://x402.forgemesh.io/heat-alert-feed
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forgemesh-heat-alert-feed-d333551b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-3trvxbPu_fvsvB6lE9Aj

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 forgemesh-heat-alert-feed-d333551b -d '<json body>'
```

Example prompt: Pull all currently active US heat alerts right now — I need the affected zones, severity levels, and full alert text for any Heat Advisory, Extreme Heat Warning, or Excessive Heat Warning in effect, so I can decide whether to cancel our outdoor event tomorrow.

## When to prefer this

Use this endpoint when you need a consolidated, normalized view of all active US heat alerts across all NWS zones in a single call, especially for outdoor labor safety compliance, automated event-cancellation logic, or public-health notification pipelines that need structured JSON rather than raw NWS XML/GeoJSON feeds.

## Known failure modes

- No active heat alerts — returns empty array or null result when no alerts are currently in effect
- Payment failure — x402 payment of $0.004 USDC not processed, request rejected
- Upstream NWS data unavailable — feed may be stale or return error if NWS API is down
- Malformed POST body — incorrect bodyType or missing required fields returns validation error

## How this service works

Nationwide heat alert feed: every currently active US Heat Advisory, Extreme Heat Warning, and Excessive Heat Warning — affected zones, severity, and full alert text — as normalized JSON. Built for outdoor-labor safety, event-cancellation logic, and public-health notification agents.

## Output

A normalized JSON array of all currently active US heat alerts, each containing the alert type (Heat Advisory, Extreme Heat Warning, or Excessive Heat Warning), affected geographic zones, severity classification, and full official alert text from the National Weather Service.

## 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": {
   "type": "FeatureCollection",
   "features": [
    {
     "properties": {
      "event": "Extreme Heat Warning",
      "areaDesc": "Coachella Valley",
      "severity": "Severe"
     }
    }
   ]
  },
  "attribution": "US National Weather Service (public domain)"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forgemesh-heat-alert-feed-d333551b/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)