Weather Oracle API — All-Cities Probabilistic Temperature Forecast

x402

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.

Price / call$0.3

Seller volume →—

Success—

StatusUnknown

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.

Example use cases

Polymarket weather trading edge

“Get me the full probability distribution of daily max temperatures for all 51 Polymarket weather cities for today — I want to compare the ensemble forecast probabilities to the current on-chain prices and find any mispriced buckets.”

Multi-city weather snapshot for arbitrage bot

“Fetch the calibrated temperature bucket probabilities for all Polymarket weather market cities for tomorrow so my trading bot can decide which YES tokens to buy based on the forecast edge.”

Pre-market research across all weather cities

“Before Polymarket's weather markets open today, get me the Weather Oracle ensemble forecast for all 51 cities — I need the probability percentages for each temperature outcome bucket.”

Technical details

Endpoint

GEThttps://91-197-235-206.sslip.io/forecast/all/buckets

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

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

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How this service works

Output

Example use cases

Polymarket weather trading edge

Multi-city weather snapshot for arbitrage bot

“Fetch the calibrated temperature bucket probabilities for all Polymarket weather market cities for tomorrow so my trading bot can decide which YES tokens to buy based on the forecast edge.”

Pre-market research across all weather cities

“Before Polymarket's weather markets open today, get me the Weather Oracle ensemble forecast for all 51 cities — I need the probability percentages for each temperature outcome bucket.”

Technical details

Endpoint

GEThttps://91-197-235-206.sslip.io/forecast/all/buckets

When to prefer

Side effects

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

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

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