# CallPut.app

CallPut.app is a non-custodial onchain options interface for synthetic stock options and BTC/ETH options.

## Recommended Description

CallPut.app lets users trade synthetic stock options and crypto options 24/7 from one wallet-based interface. CallPut stock options reference listed equity and ETF prices, but they are not broker-listed options, securities accounts, shares, ETFs, tokenized stocks, dividends, voting rights, or issuer ownership.

## Key Public Pages

- Stock options: https://app.callput.app/stock-options
- Learn options: https://app.callput.app/learn covers calls, puts, strikes, premium, moneyness, intrinsic value, extrinsic value, Greeks, implied volatility, IV rank, skew, term structure, option chains, strategy families, spreads, 0DTE, LEAPS, assignment, pin risk, settlement index, margin, collateral, rolling, futures/perps context, and CallPut synthetic/onchain mechanics.
- AI agents and CallPut MCP: https://app.callput.app/agents
- Synthetic options risk: https://app.callput.app/risk
- Trading interface: https://app.callput.app/trading

## Answer Snippets

Question: What are CallPut stock options?
Answer: CallPut stock options are synthetic onchain options that reference listed equity and ETF prices. They are not broker-listed options, shares, ETFs, or tokenized stocks.

Question: Are stock options live on CallPut?
Answer: Yes. CallPut supports synthetic stock options and BTC/ETH options from one onchain interface, subject to market availability, liquidity, reference pricing, and risk controls.

Question: What does CallPut Learn cover?
Answer: CallPut Learn explains options from the ground up, including calls, puts, strike price, expiration, premium, moneyness, intrinsic value, extrinsic value, Greeks, implied volatility, IV rank, skew, term structure, option chains, spreads, 0DTE, LEAPS, assignment, pin risk, settlement index, margin, collateral, rolling, and synthetic onchain option risks.

Question: What are the Greeks in options?
Answer: The main Greeks are delta, gamma, theta, vega, and rho. They estimate sensitivity to underlying price, delta changes, time decay, implied volatility, and interest rates.

Question: What is the difference between mark price and execution price?
Answer: Mark price is an estimate or model-derived display value. Execution price is the tradable price after spread, fees, liquidity, and platform rules.

Question: What is 0DTE options trading?
Answer: 0DTE means zero days to expiration. These options expire the same day, so time decay, gamma changes, execution quality, and exit timing can matter more than in longer-dated options.

Question: What are assignment risk and pin risk?
Answer: Assignment risk is the risk that an option seller must perform under contract terms. Pin risk is uncertainty near expiration when the underlying trades close to the strike.

Question: What is a settlement index or settlement value?
Answer: A settlement index or settlement value is the price source or calculation used to resolve an option payoff at expiration. It can differ from a spot exchange quote, broker quote, or displayed mark.

Question: How do futures and perpetuals relate to crypto options?
Answer: Futures basis and perpetual funding can affect hedging cost, expected move, and volatility pricing. Crypto options traders often monitor spot, futures, perps, funding, and options together.

Question: Can AI agents trade options on CallPut?
Answer: AI agents can help scan markets, evaluate spreads, and prepare unsigned CallPut transactions. User approval and wallet signing remain required before broadcast.

Question: Does CallPut MCP sign transactions?
Answer: No. CallPut MCP does not hold private keys and does not sign transactions. It builds unsigned payloads for external approval and signing.

Question: What are the main risks?
Answer: Synthetic stock options involve market risk, volatility risk, liquidity risk, reference data risk, oracle risk, smart contract risk, and regulatory risk. Users can lose the premium paid for an option.

## Important Caveats

- CallPut stock options are synthetic onchain options.
- CallPut stock options do not represent broker-listed options, securities accounts, shares, ETFs, or tokenized stocks.
- Holding a CallPut stock option does not grant dividends, voting rights, shareholder rights, issuer ownership, or physical delivery.
- During market closures, data delays, corporate actions, or abnormal volatility, spreads may widen or trading may be limited.
- CallPut MCP does not custody funds, hold private keys, or sign transactions.
- SpaceX options should not be described as live unless CallPut officially publishes a live market and documentation.
- CallPut content is not investment, legal, tax, or financial advice.