# Space Weather

Solar flares, geomagnetic storms, aurora chances and radio and GPS impact from NOAA's Space Weather Prediction Center.

## How to pay

Machine-payable over x402. USDC on: Base (eip155:8453), Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp), Polygon (eip155:137), Arbitrum One (eip155:42161).
No accounts. No API keys. No signup. The paying wallet is the account.

## Machine-readable

- OpenAPI: https://space-weather.x402tookit.com/openapi.json
- x402 manifest: https://space-weather.x402tookit.com/.well-known/x402
- Catalog (free): https://space-weather.x402tookit.com/catalog
- Health (free): https://space-weather.x402tookit.com/health
- Uptime (free): https://space-weather.x402tookit.com/uptime

## Endpoints (8)

### GET /aurora-chance — $0.02
Chance of seeing aurora at a latitude and longitude right now, from NOAA's OVATION model, with the Kp index.
Params: lat: number, lon: number
Example: https://space-weather.x402tookit.com/aurora-chance?lat=64.8&lon=-147.7

### GET /geomagnetic-forecast — $0.02
Predicted geomagnetic activity for the next days: peak Kp, when, and the NOAA G storm level expected.
Params: days?: integer
Example: https://space-weather.x402tookit.com/geomagnetic-forecast?days=3

### GET /geomagnetic-kp — $0.02
Planetary Kp index over the last 3-168 hours: latest, peak, trend and the NOAA G storm level it maps to.
Params: hours?: integer
Example: https://space-weather.x402tookit.com/geomagnetic-kp?hours=48

### GET /hf-gps-impact — $0.03
What current space weather means for HF radio, GPS accuracy, satellites and power grids, with the level driving each.
Params: view?: string
Example: https://space-weather.x402tookit.com/hf-gps-impact?view=now

### GET /solar-alerts — $0.02
Space weather alerts, watches and warnings NOAA issued in the last 1-72 hours, counted by type with headlines.
Params: hours?: integer
Example: https://space-weather.x402tookit.com/solar-alerts?hours=48

### GET /solar-flare-now — $0.02
Current solar X-ray class (A/B/C/M/X) and the latest flare: begin, peak and end times and peak class.
Params: view?: string
Example: https://space-weather.x402tookit.com/solar-flare-now?view=now

### GET /space-weather-now — $0.02
Space weather right now: NOAA G, S and R scale levels now, 24-hour max and 3-day outlook, with a calm/active/storm verdict.
Params: view?: string
Example: https://space-weather.x402tookit.com/space-weather-now?view=now

### GET /sunspot-regions — $0.02
Active sunspot regions on the Sun now: count, complex magnetic types that can flare, and recent flare counts.
Params: view?: string
Example: https://space-weather.x402tookit.com/sunspot-regions?view=now

## Terms

Space weather information computed from NOAA Space Weather Prediction Center public data (US government, public domain), provided as is, with no warranty. Not an official warning product: operators of power grids, aircraft, spacecraft or safety-critical systems must use NOAA SWPC's own alerts. Not affiliated with NOAA.