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Matrix

MARKET + GTC is semantically nonsensical — the server rejects with 400 invalid_tif.

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GTC — Good Till Cancelled

Default for LIMIT orders. Rests until:
  • cancelled by the user,
  • filled by a counterparty,
  • expiration reached (server cleans up with EXPIRED),
  • market resolved (cleaned up with CANCELLED_BY_RESOLVE).

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IOC — Immediate Or Cancel

Executes whatever is immediately available at the requested price; the unfilled remainder is cancelled, not rested.

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FOK — Fill Or Kill

All-or-nothing. If the full quantity isn’t immediately available at the price, nothing fills and status is CANCELLED.

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MARKET orders

MARKET + IOC — sweep the book starting from the best price until quantity is exhausted or the price slippage cap is hit. MARKET + FOK — same as above, but all-or-nothing within the slippage cap.

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Which to pick

All five combinations are reachable end-to-end via POST /api/orders/place — pass type + timeInForce in the body. Both fields are optional; defaults are limit + gtc.