polymarket.com API: get_daily_commodity_closing_ladder
polymarket.com via Parse · Finance
Get the daily closing-price probability ladder for a commodity from Polymarket. Automatically discovers the correct event for the given commodity and date. Returns a complete ladder of strike thresholds sorted descending, each with yes/no probabilities, bid/ask/midpoint, spread, liquidity, volume, CLOB token IDs, condition IDs, and per-rung quote-quality flags. Applies weighted Pool Adjacent Violators Algorithm (PAVA) to enforce monotonicity of the survival curve S(T)=P(close>T), weighting by (1/spread)*sqrt(liquidity). Computes interpolated price levels at 25/40/50/60/75 percent probability with confidence and bid/ask uncertainty bounds, and a truncated expected closing price via trapezoidal integration of the adjusted survival curve. Currently only WTI has a full closing-price ladder; other commodities return no_market_for_date. Makes 2 upstream requests. Access Polymarket prediction market data including events, markets, order books, price history, leaderboards, and trading activity. Fulfilled by Parse from polymarket.com.
- crypto-web3
- finance
- other
- parse
- platform-key
- polymarket-com
Price and execution
- Price
- $0.02 USD credits / call
- Trust tier
- Verified
- Execution
- Managed call
- Capability group
- Finance
Interface snapshot
- Protocol
- HTTP operation
- Operation
- GET /scraper/20b82f08-34e9-4c9e-91cd-eb4ff7b7814f/get_daily_commodity_closing_ladder
- Interface artifact
- sha256:322c34b3f4175252f74232d08b9234977d738d4dd747903594195f9231399684
- Manifest digest
- sha256:fe470abbec7ee7f9e996eef4b02ca2b55b7c0db2e1e78820ac831b20fa72b22a
Request fields
- as_of (string): Optional ISO 8601 timestamp. Returns historical_snapshot_unavailable status since per-token history is not aggregated.
- commodity (string): Commodity name or alias. Supported: WTI, crude oil, crude, gold, XAUUSD, silver, XAGUSD, natural gas, NG.
- target_date (string): Target settlement date YYYY-MM-DD. Defaults to today in America/New_York.
Example queries
- {"commodity":"WTI","target_date":"2026-08-30"}