Aviation Sigmet API

Active in-flight weather hazard advisories (SIGMETs and AIRMETs) from the NOAA Aviation Weather Center.

Overview

Active in-flight weather hazard advisories (SIGMETs and AIRMETs) from the NOAA Aviation Weather Center. Returns current advisories over a lookback window (1-24h), optionally filtered by hazard (CONVECTIVE, TURB turbulence, ICE icing, IFR, MTN OBSCN mountain obscuration, ASH volcanic ash). Each advisory carries the issuing office, type (SIGMET/AIRMET/OUTLOOK), hazard, severity, valid-from/to times, affected altitude band (feet MSL), movement (direction/speed), and the raw text bulletin. Keyless, public-domain (NOAA). The active-hazard layer aviation agents need — distinct from aviation.metar (station conditions) and aviation.taf (forecasts). Not for navigation.

Endpoint

Method	Endpoint	Price	Description
GET	/v1/marketplace/api/aviation-sigmet	$0.003105	Invoke Aviation Sigmet (Weather) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i https://jarvisclaw.ai/v1/marketplace/api/aviation-sigmet

# 2. Pay it (the SDK signs and retries for you)
curl -H "X-PAYMENT: <signed-payload>" https://jarvisclaw.ai/v1/marketplace/api/aviation-sigmet

Parameters

Taken from the request example this API publishes.

Name	In	Type	Example
hazard	query	string	"TURB"
hours	query	number	3

Example response

{
  "data": {
    "ok": true,
    "total": 2,
    "items": [
      {
        "icaoId": "KKCI",
        "type": "SIGMET",
        "hazard": "CONVECTIVE",
        "severity": null,
        "validFrom": "2026-06-20T18:00:00.000Z",
        "validTo": "2026-06-20T20:00:00.000Z",
        "altitudeLowFt": null,
        "altitudeHiFt": 45000,
        "movementDirDeg": 240,
        "movementSpeedKt": 25,
        "raw": "SIGE WST..."
      }
    ],
    "source": {
      "provider": "NOAA Aviation Weather Center — aviationweather.gov",
      "url": "https://aviationweather.gov/data/api/",
      "license": "Public domain (US Government work). Live-wrapped."
    }
  },
  "meta": {
    "endpoint": "aviation.sigmet",
    "version": null,
    "caller": "x402",
    "cost": {
      "usd": 0.0027
    },
    "settlement": {
      "txHash": "[redacted]",
      "network": "eip155:8453",
      "success": true
    }
  }
}

FAQ

How much does the Aviation Sigmet API cost?

$0.003105 USDC per call, paid per call over x402. There is no subscription, minimum or monthly fee.

Do I need an API key?

No. Call the endpoint, read the 402 Payment Required quote, and repeat the request with a signed USDC payment header. An account API key also works if you prefer prepaid billing.

Which chains can I pay on?

USDC on Base or on Solana. The 402 quote lists the accepted networks and the exact amount; the JarvisClaw SDKs sign and retry for you.

How do I call it from an AI agent?

Send GET to the endpoint above from any HTTP client, or connect the JarvisClaw MCP server and let the agent find and call it with the search_apis and get_api_detail tools.

Related APIs

• Weather Api
• Air Quality
• Weather Localize Pack
• Weather
• Weather Current

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