Supplementary reference material to be aware of when building your integration.
Minimum and maximum order quantities, notional amounts, and price increments across equities, options, and crypto.
How option Greeks — delta, gamma, theta, vega, and rho — are computed and exposed on the API.
How to tell whether an account can trade on margin, trade options, or trade crypto, and how to handle crypto entitlement errors.
Stop and stop-limit orders, good-till-date expiration, extended-hours and 24/5 sessions, bracket orders, and cancel-replace, with examples.
Preflight, bracket legs, tracking and polling orders, fill details, and matching history transactions to orders.