# SYNTHORA Hurricane Odds

> SYNTHORA Hurricane Odds 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).

Cross-verifies active tropical cyclone data from NHC bulletins against ECMWF model output, flagging wind speed discrepancies >15 kt, for use in weather prediction markets.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/hurricane-odds
- 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-hurricane-odds-e88e7bfa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3w5AQi5auIIcQmJHrffJq

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-hurricane-odds-e88e7bfa -d '<json body>'
```

Example prompt: Can you pull the latest cross-verified hurricane data for all active tropical cyclones right now — I need the NHC vs ECMWF comparison with any wind speed discrepancies flagged, to price a Polymarket weather market?

## When to prefer this

Choose this endpoint when you need independently cross-verified tropical cyclone intensity data — not just raw NHC output — especially for prediction market pricing where model disagreement is a material signal. It is uniquely suited for Polymarket weather/climate markets because it surfaces discrepancies between official and independent model sources automatically, saving manual cross-referencing work.

## Known failure modes

- No active tropical cyclones returns empty storm list
- NHC bulletin unavailable due to outage returns data error
- ECMWF open-meteo API unavailable causes cross-verification failure
- Malformed or missing input field returns validation error
- Payment failure via x402 returns 402 status with payment details

## How this service works

SYNTHORA hurricane-odds: active tropical cyclones CROSS-VERIFIED — official NHC bulletin (category, wind, pressure, movement) crossed with an independent model (ECMWF via open-meteo) at the storm position; discrepancies >15 kt flagged. The input for Polymarket weather/climate markets. Sources: NHC + ECMWF, free, no key. $0.006 USDC x402 Base.

## Output

Returns active tropical cyclone data including NHC-official parameters (category, wind speed in knots, central pressure, movement) alongside ECMWF model values at the same storm position, with a discrepancy flag raised when the two sources differ by more than 15 knots — structured for use as input to Polymarket weather/climate markets.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "SYNTHORA hurricane-odds: active tropical cyclones CROSS-VERIFIED — official NHC bulletin (category, wind, pressure, movement) crossed with an independent model (ECMWF via open-meteo) at the storm posi"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-hurricane-odds-e88e7bfa/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)