# NHC Active Cyclones

> NHC Active Cyclones is a paid API for AI agents from fittings.sh, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns all tropical cyclones currently under National Hurricane Center advisories, with position, intensity, Saffir-Simpson category, and forecast cone links.

## Facts

- Endpoint: GET https://fittings.sh/v1/nhc/active-cyclones
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nhc-active-cyclones-047e9ff4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4vC4wk7dFSh8a2NhSxHZj

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 nhc-active-cyclones-047e9ff4
```

Example prompt: What tropical cyclones does the National Hurricane Center currently have advisories out on? Show me all active storms across all basins, including their positions, categories, and forecast cone links.

## When to prefer this

Use this endpoint when you need real-time structured data about active NHC-tracked tropical cyclones, including machine-readable position and intensity, rather than scraping NHC's website. Ideal for agents monitoring hurricane threats, building weather dashboards, or automating emergency preparedness workflows. Prefer this over raw NHC RSS feeds when you need clean JSON with Saffir-Simpson category and forecast cone links already parsed out.

## Known failure modes

- No active cyclones returns an empty list (not an error)
- Invalid basin parameter value may return an error or be ignored
- Service unavailable if NHC data feed is temporarily down
- Stale data if NHC has not yet issued the latest advisory cycle

## How this service works

Every tropical cyclone the National Hurricane Center currently has advisories out on, with position, intensity, Saffir-Simpson category and links to the forecast cone.

## Output

A list of active tropical cyclones currently under NHC advisories, each with the storm's name, current geographic position (latitude/longitude), maximum sustained wind speed, Saffir-Simpson hurricane category (or tropical storm/depression classification), and a URL to the official NHC forecast cone graphic.

## 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",
     "required": [],
     "properties": {
      "basin": {
       "type": "string",
       "description": "One of all, atlantic, pacific. Default all."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nhc-active-cyclones-047e9ff4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fittings.sh](https://www.zero.xyz/host/fittings.sh/llms.txt)