Options Open Interest API for chain ranking, expiry concentration, and liquidity filters
CuteMarkets returns open interest inside chain and contract snapshot workflows, so scanners can rank contracts by liquidity and expiry concentration without a separate reference system.
Why teams use it
How open interest fits into options data workflows
Chain-level ranking
Sort or filter contracts by open interest alongside strike, IV, Greeks, and latest pricing context.
Single-contract context
Inspect open interest on one selected contract inside the snapshot payload.
Expiration concentration
Compare where participation clusters across weekly, monthly, and quarterly cycles.
Liquidity filters
Avoid thin contracts before running quote, trade, or backtest logic.
Strike discovery
Use open interest as one signal when choosing candidate strikes for dashboards or scanners.
Pairs with quotes
Open interest is useful, but spread and quote-size checks still decide whether a contract is practical.
Use cases
What you can build with this options data API
Liquidity screeners
Filter out low-open-interest contracts before ranking by IV, delta, or spread.
Expiration dashboards
Show where participation clusters across upcoming option cycles.
Pinning research
Use strike-level open interest as one input to expiration-week analysis.
Contract selection
Select liquid candidates before requesting quote and trade history.
Developer examples
Two code paths teams usually need first
curl "https://api.cutemarkets.com/v1/options/chain/SPY/?expiration_date=2026-05-15&limit=50" \
-H "Authorization: Bearer YOUR_API_KEY"curl "https://api.cutemarkets.com/v1/options/snapshot/AAPL/O:AAPL251121C00225000/" \
-H "Authorization: Bearer YOUR_API_KEY"Evaluate and compare
Why chain snapshots alone are not enough
Focused endpoint pages are useful because most teams do not evaluate an options data API in the abstract. They evaluate one workflow first, then expand into chains, contracts, quotes, trades, and expirations.
Options data API
Start from the canonical product page for the full live and historical surface.
Historical options data API
See how contracts, quotes, trades, aggregates, and expirations fit together for research.
Best options data APIs
Compare provider evaluation criteria before committing to a data stack.
Docs to open next
Relevant API docs
Tutorials and research
Related articles
Backtest options without stale contracts
See why contract discovery with historical dates matters before a backtest is trusted.
Why option quotes beat last price
Understand bid/ask context, last-sale gaps, and quote-aware research workflows.
Quote-aware options fills
A research-to-product bridge from the CuteMarkets backtesting work.
FAQ
Common questions about this options data API
Does CuteMarkets expose open interest as a separate endpoint?
Open interest is exposed inside chain and contract snapshot responses. That keeps it next to the strike, expiration, Greeks, quote, and trade context that usually matters for contract selection.
Does CuteMarkets provide both real-time and historical options data?
Yes. CuteMarkets supports real-time snapshots and historical workflows across contracts, trades, quotes, aggregates, and expirations, with plan-specific live or delayed access.
Do you provide quotes, trades, and historical contracts?
Yes. The platform includes contracts, chain snapshots, contract snapshots, trade history, quote history, aggregates, and expiration lookups for U.S.-listed options.
Do you provide the earnings calendar too?
CuteMarkets provides the options data layer. Earnings timing should come from a dedicated earnings calendar source that you combine with the options data.
Rank contracts by open interest, then verify tradability
Use open interest as a first-pass filter, then confirm spread quality and trade activity before relying on a contract.
Canonical URL: https://cutemarkets.com/options-open-interest-api/