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GET
Get current HIP-4 open interest

Authorizations

X-API-Key
string
header
required

API key for authentication. Get yours at https://0xarchive.io/dashboard

Path Parameters

symbol
string
required

HIP-4 coin id (e.g., 0 for outcome 0 Yes side, 1 for No side). The #-prefixed form (#0, #1) is also accepted.

Example:

"0"

Response

Current open interest

API response wrapping a single HIP-4 per-side open-interest record

success
boolean
Example:

true

data
object

HIP-4 per-side open-interest record. Mirrors the HIP-3 OI shape and adds outcome_id and side. oracle_price is omitted for HIP-4 (outcomes have no oracle feed). Note: mark_price is an implied probability in [0,1], not a USD price; same field name as perps because Hyperliquid upstream uses markPx for both.

meta
object

Response metadata

Last modified on August 13, 2026