Index onlineMerchant portal
Api Endpoint

hyperextend

Derived two-sided open interest for a HIP-4 outcome market, per minute (circulating-supply times mark, summed over both sides). Priced per row ($0.000025 premium); served live. Takes the integer outcome id (e.g. 100).

Open interactive test console

Offering

Provider
api.hyperextend.xyz
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Prediction Markets
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.hyperextend.xyz/v1/outcome/100/oi
MIME type
application/json
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
hyperliquid, market-data, Candles, open-interest, hip-3, hip-4, trades, liquidations

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.125725 USDC
Atomic price: 125725 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.125725 USDC
Atomic price: 125725 · Network: eip155:8453 · Asset: USDC · Scheme: batch-settlement
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "125725",
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4"
  },
  {
    "scheme": "batch-settlement",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "125725",
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4"
  }
]

Observed health

Status
Healthy
Latest latency
253 ms
Average latency
871 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "start": {
          "type": "integer"
        },
        "end": {
          "type": "integer"
        },
        "limit": {
          "type": "integer"
        }
      },
      "required": []
    },
    "pathParams": {
      "type": "object",
      "properties": {
        "outcome": {
          "type": "string",
          "description": "HIP-4 outcome market id (integer), e.g. 100"
        }
      },
      "required": [
        "outcome"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "pathParams": {
          "properties": {
            "outcome": {
              "description": "HIP-4 outcome market id (integer), e.g. 100",
              "type": "string"
            }
          },
          "required": [
            "outcome"
          ],
          "type": "object"
        },
        "queryParams": {
          "properties": {
            "end": {
              "type": "integer"
            },
            "limit": {
              "type": "integer"
            },
            "start": {
              "type": "integer"
            }
          },
          "required": [],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}