Place Multileg Order

Place a multileg option order (up to 4 option legs). Send to POST /v1/accounts/{account_id}/orders with class=multileg.

Understanding debit, credit, and even order types

In addition to market, multileg orders support three order types that describe the net premium of the combined legs rather than a per-leg limit price:

• debit — the trader pays a net premium to enter the position (e.g. buying more option value than is sold).
• credit — the trader receives a net premium for entering the position (e.g. selling more option value than is bought).
• even — no net premium changes hands; the value of the legs bought and sold offsets to zero.

For debit, credit, and even orders, the price field is interpreted as the net premium for the entire order (i.e. per one full set of legs), not a per-leg price. For example, a debit order with price=1.50 means the trader is willing to pay up to $1.50 net premium per contract set across all legs combined.

Which fields are required per order type

Multileg orders do not use a stop field; only price applies, and only for the non-market order types: