# SYNTHORA NOAA Tides – Tide & Water Level with Storm-Surge Anomaly

> SYNTHORA NOAA Tides – Tide & Water Level with Storm-Surge Anomaly is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Fetches live NOAA CO-OPS tide and water level data for US ports/stations and computes the anomaly between observed and harmonically predicted values to surface storm-surge and port-disruption signals.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/noaa-tides
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-noaa-tides-tide-water-level-with-storm-surge-anomaly-eb026cf5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HSBjbPhoX0oNSPY8etToF

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-noaa-tides-tide-water-level-with-storm-surge-anomaly-eb026cf5 -d '<json body>'
```

Example prompt: What's the current tide level and storm-surge anomaly at the Port of New York — is the observed water level significantly above or below what NOAA's harmonic prediction says it should be right now?

## When to prefer this

Use this endpoint when you need both the raw NOAA tide/water level data AND an anomaly signal computed against harmonic predictions in a single call — ideal for maritime operations, port logistics, storm-surge monitoring, or coastal risk assessment at US ports. Prefer this over raw NOAA API calls when you want the observed-minus-predicted delta pre-computed without building your own harmonic comparison pipeline.

## Known failure modes

- Station not found or invalid station identifier returns an error
- NOAA CO-OPS live observation unavailable for the requested station at that moment
- No recent observation data available for remote or inactive stations
- Ambiguous station name matching multiple locations
- Network timeout when fetching live NOAA data

## How this service works

SYNTHORA noaa-tides: tide and water level for US ports/stations, VERIFIED by crossing NOAA harmonic prediction with the LIVE observation at the same station — the anomaly (observed minus predicted) is the storm-surge/port-disruption signal. Source: NOAA CO-OPS official, free, no key. $0.005 USDC x402 Base.

## Output

Returns the current observed water level and NOAA CO-OPS harmonic tide prediction for the requested US port or station, along with the computed anomaly (observed minus predicted) which serves as a storm-surge or port-disruption signal. Positive anomalies indicate water levels higher than expected, potentially signaling storm surge or coastal flooding conditions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA noaa-tides: tide and water level for US ports/stations, VERIFIED by crossing NOAA harmonic prediction with the LIVE observation at the same station — the anomaly (observed minus predicted) is"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-noaa-tides-tide-water-level-with-storm-surge-anomaly-eb026cf5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)