EOD OI

Pro

GET /hip4-analytics/oi-eod

End-of-day two-sided HIP-4 trading open interest — shares and USD values, with settlement legs excluded. Returns daily OI snapshots that can be filtered by outcome ID or scoped to a minimum date. Use it to track how overall prediction market positioning has evolved, or chart OI for a specific outcome.

Authentication

Requires Pro tier or higher. Free and Dev tiers do not have access (returns 403).

Parameters

Query parameters

Name	Type	Required	Description
`by_outcome`	string	–	Set to 1 or true for per-outcome rows.
`outcome_id`	int	–	Filter to a specific outcome market.
`min_day`	string (YYYY-MM-DD)	–	Earliest date to include.

Example request

bash

curl -H "X-Api-Key: lk_live_your_key_here" \
  "https://api.loris.tools/hip4-analytics/oi-eod?min_day=2026-06-01"

Example response

json

{
  "success": true,
  "data": [
    { "day": "2026-06-01", "oi_usd": 12400000, "oi_shares": 84200 },
    { "day": "2026-06-02", "oi_usd": 13200000, "oi_shares": 89800 }
  ],
  "default_min_day": "2026-01-01"
}

Errors

403 — Your tier does not have access. Upgrade to Pro.

For authentication errors (401) and rate limit responses (429), see Errors.