# Weather Oracle API — All-Cities Probabilistic Temperature Forecast

> Weather Oracle API — All-Cities Probabilistic Temperature Forecast is a paid API for AI agents from 91-197-235-206.sslip.io, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-14).

Returns probabilistic daily max-temperature forecast buckets for all 51 Polymarket weather-market cities in a single paid API call via x402/USDC.

## Facts

- Endpoint: GET https://91-197-235-206.sslip.io/forecast/all/buckets
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/weather-oracle-api-all-cities-probabilistic-temperature-forecast-90919d79
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v5sc6k3QmNennh1L1Be4b

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 weather-oracle-api-all-cities-probabilistic-temperature-forecast-90919d79
```

Example prompt: Pull the probabilistic max-temperature forecast buckets for all 51 Polymarket weather cities for tomorrow — I want to see the full probability distribution across temperature outcomes for each city.

## When to prefer this

Choose this endpoint when you need probabilistic temperature forecasts specifically calibrated to Polymarket's weather market bucket structure for all 51 cities in one call. It is ideal for prediction market trading, arbitrage research, or building automated agents that trade Polymarket weather tokens. Prefer this over generic weather APIs when you need Polymarket token IDs alongside probabilities. Use the per-station endpoint siblings when you only need a single city to reduce cost.

## Known failure modes

- Payment failure: x402 USDC payment on Base rejected or insufficient balance — returns 402 Payment Required
- Invalid or unsupported date: date parameter is not today or tomorrow in city-local time — returns 400 or empty result
- Service unavailable: underlying model ensemble not refreshed yet — may return stale data or 503
- Network error: raw IP + sslip.io hostname may have TLS or routing issues — connection timeout
- Date format error: date not in YYYY-MM-DD format — returns 400 validation error

## How this service works

Probabilistic daily max-temperature forecasts for the 51 cities behind Polymarket weather markets. Multi-model ensemble with per-model seasonal bias correction, refreshed hourly. Pay per request in USDC on Base via x402 — no accounts, no API keys.

## Output

A JSON object containing an array of 51 city entries, each with an ICAO station code, a convention label (market_mirrored_v1), and an array of probability buckets. Each bucket has a probability (p), a human-readable temperature outcome string (e.g. '24°C'), and the corresponding Polymarket YES token ID. Also includes an n_cities count at the top level.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method",
    "pathParams"
   ],
   "properties": {
    "method": {
     "type": "string",
     "const": "GET"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "station"
     ],
     "properties": {
      "station": {
       "type": "string",
       "description": "ICAO station code (e.g. SBGR = Sao Paulo, KNYC = New York). Full catalog at /markets (free)."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "date": {
       "type": "string",
       "format": "date",
       "description": "Target date YYYY-MM-DD (today or tomorrow, city-local). Defaults to today."
      }
     }
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "cities": [
  {
   "buckets": [
    {
     "p": 0.1,
     "outcome": "24°C",
     "token_id_yes": "1138…"
    }
   ],
   "station": "SBGR",
   "convention": "market_mirrored_v1"
  }
 ],
 "n_cities": 51
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/weather-oracle-api-all-cities-probabilistic-temperature-forecast-90919d79/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 91-197-235-206.sslip.io](https://www.zero.xyz/host/91-197-235-206.sslip.io/llms.txt)