Account health

Your account’s health is its margin surplus: what your collateral is worth, minus what your positions require. See Margin math for the formula.

Read it

GET /v1/positions?subaccount_id=N reports it under futures_account:

Field	Meaning
`im_surplus_usd`	Surplus over initial margin, in USD
`mm_surplus_usd`	Surplus over maintenance margin, in USD

Both are read from chain. A missing field means the venue could not read it, not zero.

State	What you can do
`im_surplus_usd` ≥ 0	Trade freely.
`im_surplus_usd` < 0, `mm_surplus_usd` ≥ 0	Reduce positions only. Trades that add risk are refused.
`mm_surplus_usd` < 0	The account can be liquidated.

Watch the mark. Variation margin moves with every mark update.
Hold USDC. cNGN counts at half its value, and a depeg raises initial margin.
Top up before you need to. A deposit to an existing subaccount raises both surpluses.
Reduce early. A reduce_only order is held only to maintenance margin.