Get Market Details (includes Open Interest)

curl -X GET "https://api.strike.markets/market/BTC-USD"

const symbol = "BTC-USD";

const response = await fetch(`https://api.strike.markets/market/${symbol}`);
const oiData = await response.json();

console.log(`Open Interest for ${symbol}:`, oiData);

import requests

symbol = "BTC-USD"

response = requests.get(f'https://api.strike.markets/market/{symbol}')
oi_data = response.json()

print(f'Open Interest for {symbol}:', oi_data)

{
  "symbol": "BTC-USD",
  "position_multiplier": "0.000001",
  "long_funding_rate_hourly": "0.000125",
  "short_funding_rate_hourly": "-0.000075",
  "long_funding_rate_annual": "1.095",
  "short_funding_rate_annual": "-0.657",
  "long_oi": "2500000.00",
  "short_oi": "1800000.00",
  "total_oi": "4300000.00",
  "skew": "0.1628",
  "volumeUsd24h": "45000000.00",
  "volumeUsdTotal": "2340000000.00"
}

​

Overview

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Path Parameters

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Response Fields

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Open Interest Mechanics

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What Open Interest Represents

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Position Value

• Long OI: Sum of all long position sizes
• Short OI: Sum of all short position sizes
• Total OI: Combined exposure in the market

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Market Activity

• Market engagement: Higher OI = more active participation
• Liquidity depth: More positions = more potential liquidity
• Capital allocation: Where traders are putting their money
• Market maturity: Established markets tend to have higher OI

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Imbalance Calculation

Imbalance % = ((Long OI - Short OI) / Total OI) × 100

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Interpretation Examples

Long OI: $2,500,000
Short OI: $1,800,000
Total OI: $4,300,000
Imbalance: +16.28% (long-heavy)

Long OI: $1,200,000  
Short OI: $2,100,000
Total OI: $3,300,000
Imbalance: -27.27% (short-heavy)

Long OI: $1,500,000
Short OI: $1,450,000
Total OI: $2,950,000
Imbalance: +1.69% (nearly balanced)

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Market Implications

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Directional Bias

• +20% to +50%: Moderate bullish bias
• +50%+: Strong bullish sentiment
• -20% to -50%: Moderate bearish bias
• -50%-: Strong bearish sentiment
• ±10%: Balanced, no clear directional bias

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Funding Impact

• Long-heavy: Longs typically pay funding to shorts
• Short-heavy: Shorts typically pay funding to longs
• Balanced: Minimal funding rate pressure

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Volatility Indicators

• High total OI: Potential for significant price moves when positions close
• Extreme imbalance: Risk of cascading liquidations
• Growing OI: Increasing market interest and potential volatility

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Error Responses

{
  "error": 400,
  "message": "Invalid symbol: XYZ-USD"
}

{
  "error": 404,
  "message": "Market not found: ABC-USD"
}

​

Related Endpoints

• Get Markets - View OI for all markets at once
• Get Funding Rates - Understand how OI imbalance affects funding
• Get Positions - See your contribution to market OI
• Long Position / Short Position - Your trades affect total OI