# Clonecho GFS Ensemble Weather Signal + Kalshi Market Mispricing

> Clonecho GFS Ensemble Weather Signal + Kalshi Market Mispricing is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a 31-member GFS ensemble daily-high temperature forecast for 7 US cities and identifies where Kalshi weather prediction markets are mispriced relative to the ensemble.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/signal
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clonecho-gfs-ensemble-weather-signal-kalshi-market-mispricing-b5df4d8b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yKiCvItvMb0h3zBgf5oEx

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 clonecho-gfs-ensemble-weather-signal-kalshi-market-mispricing-b5df4d8b -d '<json body>'
```

Example prompt: Pull the latest GFS 31-member ensemble daily-high forecast for the 7 US cities and tell me which Kalshi weather markets look mispriced versus the ensemble right now.

## When to prefer this

Choose this endpoint when you need a probabilistic, ensemble-based weather forecast specifically for US cities combined with actionable intelligence about where Kalshi weather prediction markets diverge from model consensus. Ideal for quantitative traders, weather market analysts, or agents building weather-linked trading strategies. Not a general-purpose weather API — its value is the ensemble+market comparison signal.

## Known failure modes

- GFS ensemble data not yet available for current cycle — may return stale or empty forecast
- Kalshi API unavailable — mispricing signal may be missing or null
- No mispricings detected — signal array may be empty
- Rate limit or payment failure — 402 response requiring valid USDC payment
- Service downtime — 5xx error with no data returned

## How this service works

Clon weather-edge signal: 31-member GFS ensemble daily-high forecast for 7 US cities, plus where Kalshi weather markets are mispriced vs the ensemble. Returns JSON.

## Output

A JSON object containing the 31-member GFS ensemble daily high temperature forecasts for 7 US cities and a signal layer indicating where Kalshi weather market odds deviate from ensemble-implied probabilities, highlighting potential mispricings.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clonecho-gfs-ensemble-weather-signal-kalshi-market-mispricing-b5df4d8b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)