Roundhouse AI

hyperextend

Per-minute Hyperliquid market history: open interest, candles, trades, liquidations, HIP-3, spot and outcome markets. Query any window, pay per request over x402.

TradingLiveeip155:8453Exactvia cdp
https://api.hyperextend.xyz/v1/outcome_ctx/%231000
HyperliquidMarket-dataCandlesOpen-interestHip-3
Settlements · 30d
63↑ 6.7%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$3.96
Verified settled volume
289 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-06-22 05:01Z
—
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": "125800",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "USDC:0x6d1e7cde53ba9467b783cb7c530ce054",
      "extra": {
        "destinationDex": "spot"
      },
      "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
      "amount": "0.1258",
      "scheme": "exact",
      "network": "hyperliquid:mainnet",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb"
      },
      "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
      "amount": "125800",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.hyperextend.xyz/v1/outcome_ctx/",
    "tags": [
      "hyperliquid",
      "market-data",
      "candles",
      "open-interest",
      "hip-3",
      "hip-4",
      "trades",
      "liquidations"
    ],
    "iconUrl": "https://hyperextend.xyz/favicon.svg",
    "mimeType": "application/json",
    "description": "HIP-4 outcome-side mark / mid (implied probability) / circulating-supply / volumes over a window. Priced per row ($0.000025 premium); paginate with the X-Next-Start header (≤5000 rows/page); served live. Coin is the encoded '#<10*outcome+side>' (e.g. %231000).",
    "serviceName": "hyperextend"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "end": 0,
            "limit": 5000,
            "start": 0
          }
        },
        "output": {
          "type": "json",
          "example": {
            "coin": "#1000",
            "mid_px": "0.62",
            "source": "ws",
            "mark_px": "0.62",
            "minute_ts": 1700000000,
            "sample_ts": 1700000005,
            "day_ntl_vlm": "54321.0",
            "prev_day_px": "0.58",
            "day_base_vlm": "87654.0",
            "circulating_supply": "1000000.0"
          }
        }
      },
      "schema": {
        "type": "object",
        "$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": [
                  "coin"
                ],
                "properties": {
                  "coin": {
                    "type": "string",
                    "description": "Encoded HIP-4 outcome-side coin '#<10*outcome+side>' (e.g. #1000)"
                  }
                }
              },
              "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."
  }
}

Accepts

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

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 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
1000 smallest units
0.001units
on hyperliquid:mainnet · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to
0x548f…1abc4
Token contract
USDC:0…ce054
Payment window
1 minute
0.001USDC≈ $0.001 USD
on Base · batch-settlement scheme

Pay 0.001 USDC on Base to 0x548f…1abc4. The signed payment is good for 5 minutes.

Paid to
0x548f…1abc4
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "USDC:0x6d1e7cde53ba9467b783cb7c530ce054",
    "extra": {
      "destinationDex": "spot"
    },
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
    "amount": "0.001",
    "scheme": "exact",
    "network": "hyperliquid:mainnet",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "withdrawDelay": 86400,
      "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb"
    },
    "payTo": "0x548fC289526ab2F0391D562a723cdA64Bbf1abc4",
    "amount": "1000",
    "scheme": "batch-settlement",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "end": 0,
          "limit": 5000,
          "start": 0
        }
      },
      "output": {
        "type": "json",
        "example": {
          "coin": "#1000",
          "mid_px": "0.62",
          "source": "ws",
          "mark_px": "0.62",
          "minute_ts": 1700000000,
          "sample_ts": 1700000005,
          "day_ntl_vlm": "54321.0",
          "prev_day_px": "0.58",
          "day_base_vlm": "87654.0",
          "circulating_supply": "1000000.0"
        }
      }
    },
    "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": [
                "coin"
              ],
              "properties": {
                "coin": {
                  "type": "string",
                  "description": "Encoded HIP-4 outcome-side coin '#<10*outcome+side>' (e.g. #1000)"
                }
              }
            },
            "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"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-06-22 05:01Z
Last indexed by Roundhouse
2026-07-22 04:00Z
Last enriched (probe, favicon, geo)
2026-09-21 10:45Z
x402 version
2
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 hyperextend 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=hyperextend'
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_ctx/%231000, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

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