# SYNTHORA Marine Wave & Swell Forecast

> SYNTHORA Marine Wave & Swell Forecast is a paid API for AI agents from marine-wave-forecast.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).

Returns hourly wave height, wave direction, wave period, swell height, wind wave, and ocean current data for any coastal coordinate using Open-Meteo's marine model.

## Facts

- Endpoint: POST https://marine-wave-forecast.hergertsynthora.com/service
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-marine-wave-swell-forecast-6c247f61
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D6bPKS6RxA37ycP2x1aKL

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 synthora-marine-wave-swell-forecast-6c247f61 -d '<json body>'
```

Example prompt: What are the current and hourly wave height, swell height, and ocean current conditions at latitude 34.02, longitude -118.5? I need the full sea-state breakdown for route risk scoring.

## When to prefer this

Choose this endpoint when you need marine-specific forecast data — wave, swell, and ocean current conditions — for a precise coastal or offshore coordinate. It is purpose-built for maritime, offshore energy, and surf use cases where sea-state data is required for route planning, risk scoring, or operational safety decisions, as opposed to general atmospheric weather APIs that lack wave and swell outputs.

## Known failure modes

- Coordinates that are inland or non-coastal may return empty or invalid marine data
- Missing or malformed latitude/longitude values will result in a request error
- Open-Meteo marine model coverage may not extend to all ocean regions, potentially returning null data
- Payment failure via x402 protocol will block the response
- Extreme or out-of-range coordinate values may cause lookup failures

## How this service works

Returns current and hourly wave height, wave direction, wave period, swell height, wind wave and ocean current data for any coastal coordinate from Open-Meteo's marine model. Autonomous maritime, shipping, offshore-energy and surf agents consume it for A2A route planning, sea-state risk scoring and agent-to-agent logistics decisions. Ranking surface: marine weather, wave forecast, swell, sea state, ocean conditions API.

## Output

A JSON object containing current and hourly marine forecast data for the queried coordinate, including wave height, wave direction, wave period, swell height, wind wave height, and ocean current speed and direction, sourced from Open-Meteo's marine model.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "latitude",
  "longitude"
 ],
 "properties": {
  "latitude": {
   "type": "number",
   "description": "latitude"
  },
  "longitude": {
   "type": "number",
   "description": "longitude"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-marine-wave-swell-forecast-6c247f61/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from marine-wave-forecast.hergertsynthora.com](https://www.zero.xyz/host/marine-wave-forecast.hergertsynthora.com/llms.txt)