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GET
Price across a range of trade sizes

Path Parameters

pair
string
required

Trading pair as BASE-QUOTE, e.g. BTC-USD or FTSE-GBP

Pattern: ^[A-Z0-9]+-[A-Z0-9]+$

Query Parameters

levels
integer
default:20

Number of price levels per side

Required range: 1 <= x <= 100

Response

Ladder for both sides

pair
string
required
mid
number
required
asks
object[]
required

Taker buy

bids
object[]
required

Taker sell

maxNotionalUsd
number
required

Where both ladders stop — the pair's OI ceiling, or current OI where that is larger. Shared across sides, so asks[i] and bids[i] price the same size and spread-at-size is one subtraction.

availableNotionalUsd
object
required

Remaining OI capacity per side. Deep levels can exceed these — the ladder is the whole impact curve, and this is how much of it is reachable now.

openInterest
object
required

Raw open interest behind those numbers

topOfBook
object
required
priceTimestampMs
integer
required