api.hyperextend.xyz

Name: api.hyperextend.xyz
Price: 0.125725 USDC
Availability: InStock

No description published for this endpoint.

OtherLiveeip155:8453Exactvia facilitator:thirdweb

https://api.hyperextend.xyz/v1/outcome/100/oi

Calls · 30d

4→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.

$4.45

Verified settled volume

434 settlements proven x402 by their on-chain EIP-3009 marker.

$0.126

Listed price

As published in the catalog. Always read the live 402 before paying.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Never called

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x548fC289526ab2F0391D562a723cdA64Bbf1abc4

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
      "amount": "125725",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "USDC:0x6d1e7cde53ba9467b783cb7c530ce054",
      "extra": {
        "destinationDex": "spot"
      },
      "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
      "amount": "0.125725",
      "scheme": "exact",
      "network": "hyperliquid:mainnet",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb"
      },
      "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
      "amount": "125725",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.hyperextend.xyz/v1/outcome/100/oi",
    "tags": [
      "hyperliquid",
      "market-data",
      "candles",
      "open-interest",
      "hip-3",
      "hip-4",
      "trades",
      "liquidations"
    ],
    "iconUrl": "https://hyperextend.xyz/favicon.svg",
    "mimeType": "application/json",
    "description": "Derived two-sided open interest for a HIP-4 outcome market, per minute (circulating-supply times mark, summed over both sides). Priced per row ($0.000025 premium); served live. Takes the integer outcome id (e.g. 100).",
    "serviceName": "hyperextend"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "end": 0,
            "limit": 5000,
            "start": 0
          }
        },
        "output": {
          "type": "json",
          "example": {
            "sides": 2,
            "minute_ts": 1700000000,
            "oi_notional": "12345.6"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "pathParams": {
                "type": "object",
                "required": [
                  "outcome"
                ],
                "properties": {
                  "outcome": {
                    "type": "string",
                    "description": "HIP-4 outcome market id (integer), e.g. 100"
                  }
                }
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "end": {
                    "type": "integer"
                  },
                  "limit": {
                    "type": "integer"
                  },
                  "start": {
                    "type": "integer"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2,
  "instructions": {
    "docs": "https://hyperextend.xyz/docs",
    "client": "https://github.com/coinbase/x402",
    "summary": "Payment is required via the x402 protocol (v2). The 402 `accepts` lists the available payment rails - pay with any ONE of them: read the PAYMENT-REQUIRED header, sign, and retry with a PAYMENT-SIGNATURE header. (1) Base (EVM): use Coinbase's official x402 client (`pip install \"x402[evm]\"`) from a Base-mainnet USDC wallet - a plain EOA, not a smart wallet. It signs an EIP-3009 USDC authorisation; you need USDC, not ETH (the facilitator broadcasts and pays the gas). (2) Hyperliquid (HyperCore): pay directly with the SAME USDC you trade and open positions with on Hyperliquid - no bridging, no separate wallet. Sign a HyperliquidTransaction:SendAsset action (gasless, no facilitator) and the server settles it on-chain.",
    "batchSettlement": "The batch-settlement scheme needs a channel with a non-zero payerAuthorizer, the address of the key that signs your vouchers. A private-key wallet complies automatically; a smart-contract wallet must pass a voucher_signer (voucherSigner in TypeScript). Otherwise pay with the exact scheme on Base or HyperCore. Details: https://hyperextend.xyz/docs#payer-authorizer"
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.125725USDC≈ $0.125725 USD

on Base · exact scheme

Pay 0.125725 USDC on Base to 0x548f…1abc4. The signed payment is good for 1 minute.

Paid to: 0x548f…1abc4
USD Coin contract: 0x8335…02913
Payment window: 1 minute
As published: 125725 smallest units
Returns: application/json

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://api.hyperextend.xyz/v1/outcome/100/oi",
    "description": "",
    "maxAmountRequired": "125725",
    "maxTimeoutSeconds": 60
  }
]

Provenance

Seen in the source catalog: 2026-10-20 19:10Z
Last indexed by Roundhouse: 2026-11-08 05:15Z
Last enriched (probe, favicon, geo): 2026-10-15 11:15Z
x402 version: 1
Max timeout: 60s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service api.hyperextend.xyz and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.hyperextend.xyz'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.hyperextend.xyz/v1/outcome/100/oi, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.