Roundhouse

Usenami

Historical per-venue funding rates for one crypto perpetual, aggregated 1h/4h/1d, across tracked CEX and DEX venues — the timeseries a funding-arb backtest needs. Up to 30-day windows (30-day retention). Edge-isolated: raw rates only, no spread or signal logic.

TradingLiveeip155:8453Exactvia cdp
https://api.usenami.io/v1/funding/historical
FundingPerpetualTradingMulti-venueMarket-data
Calls · 30d
3↓ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$5.44
Verified settled volume
2,080 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-15 07:24Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x1538726707212F4dB3EB67cEc0910422A310475c

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": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://api.usenami.io/v1/funding/historical",
      "description": "Historical per-venue funding rates for one crypto perpetual, aggregated 1h/4h/1d, across tracked CEX and DEX venues — the timeseries a funding-arb backtest needs. Up to 30-day windows (30-day retention). Edge-isolated: raw rates only, no spread or signal logic.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "to": {
              "type": "string",
              "format": "date-time",
              "required": false,
              "description": "Window end ISO 8601. Default: now."
            },
            "aggr": {
              "enum": [
                "1h",
                "4h",
                "1d"
              ],
              "type": "string",
              "required": false,
              "description": "Bucket granularity. Default 1h."
            },
            "from": {
              "type": "string",
              "format": "date-time",
              "required": false,
              "description": "Window start ISO 8601. Default depends on aggr: 1h→3 days ago, 4h→7 days ago, 1d→30 days ago."
            },
            "ticker": {
              "type": "string",
              "required": true,
              "description": "Base ticker (e.g. BTC, ETH). Required."
            }
          }
        },
        "output": {
          "ticker": "BTC",
          "buckets": [
            {
              "venue": "binance",
              "samples": 1,
              "avg_price": 67234.5,
              "bucket_start": "2026-05-15T00:00:00Z",
              "avg_funding_rate": 0.0001
            },
            {
              "venue": "hyperliquid",
              "samples": 1,
              "avg_price": 67240,
              "bucket_start": "2026-05-15T00:00:00Z",
              "avg_funding_rate": 0.00012
            }
          ],
          "window_end": "2026-05-22T00:00:00Z",
          "aggregation": "1h",
          "venues_count": 18,
          "window_start": "2026-05-19T00:00:00Z"
        }
      },
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Accepts

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

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x1538…0475c. The signed payment is good for 5 minutes.

Paid to
0x1538…0475c
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "to": {
            "type": "string",
            "format": "date-time",
            "required": false,
            "description": "Window end ISO 8601. Default: now."
          },
          "aggr": {
            "enum": [
              "1h",
              "4h",
              "1d"
            ],
            "type": "string",
            "required": false,
            "description": "Bucket granularity. Default 1h."
          },
          "from": {
            "type": "string",
            "format": "date-time",
            "required": false,
            "description": "Window start ISO 8601. Default depends on aggr: 1h→3 days ago, 4h→7 days ago, 1d→30 days ago."
          },
          "ticker": {
            "type": "string",
            "required": true,
            "description": "Base ticker (e.g. BTC, ETH). Required."
          }
        }
      },
      "output": {
        "type": "json",
        "example": {
          "ticker": "BTC",
          "buckets": [
            {
              "venue": "binance",
              "samples": 1,
              "avg_price": 67234.5,
              "bucket_start": "2026-05-15T00:00:00Z",
              "avg_funding_rate": 0.0001
            },
            {
              "venue": "hyperliquid",
              "samples": 1,
              "avg_price": 67240,
              "bucket_start": "2026-05-15T00:00:00Z",
              "avg_funding_rate": 0.00012
            }
          ],
          "window_end": "2026-05-22T00:00:00Z",
          "aggregation": "1h",
          "venues_count": 18,
          "window_start": "2026-05-19T00:00:00Z"
        }
      }
    },
    "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"
            },
            "method": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-15 07:24Z
Last indexed by Roundhouse
2026-09-24 08:50Z
Last enriched (probe, favicon, geo)
2026-09-21 17:45Z
x402 version
2
Max timeout
300s
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 Usenami 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=Usenami'
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.usenami.io/v1/funding/historical, 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.