Roundhouse

Usenami

Keyless security for AI trading agents. Your CEX and DEX API keys stay inside an AWS Nitro Enclave — your agent gets policy-bounded signatures; the signing secret never leaves it. Plus a free real-time funding rate terminal.

TradingLiveeip155:8453Exactvia wellknown:api.usenami.io
https://api.usenami.io/v1/perp/funding-spread
FundingPerpetualTradingMulti-venueMarket-data
Calls · 30d
2↓ 39%
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.
$0.0010
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
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/perp/funding-spread",
      "description": "Cross-venue funding-rate spread for one crypto perpetual — the highest- and lowest-paying venues and the spread in bps, across major CEX and DEX venues (Binance, Bybit, OKX, Hyperliquid …). `spread_bps` is the RAW rate difference, the same quantity and name as on `/v1/perp/arbitrage/funding`; `normalized_spread_8h_bps` scales both legs to 8h, the comparable one, since venues quote on 1h/4h/8h. Leg intervals ship with the row; normalized is null when a schedule is unknown, never defaulted.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "ticker": {
              "type": "string",
              "required": true,
              "description": "Base ticker (e.g. BTC, ETH). Required."
            },
            "canonical_id": {
              "type": "string",
              "required": false,
              "description": "Disambiguates a ticker that names two unrelated assets; a 409 on the ticker alone names the candidates."
            }
          }
        },
        "output": {
          "spread": {
            "ticker": "BTC",
            "long_rate": -0.0001,
            "long_venue": "dydx",
            "short_rate": 0.0003,
            "spread_bps": 4,
            "updated_at": "2026-05-17T20:00:00Z",
            "short_venue": "binance",
            "apr_spread_pct": 120.45,
            "long_interval_hours": 1,
            "short_interval_hours": 8,
            "normalized_spread_8h_bps": 11
          },
          "ticker": "BTC",
          "venues_count": 18
        }
      },
      "maxAmountRequired": "1000",
      "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.

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0x1538…0475c. The signed payment is good for 1 minute.

Paid to
0x1538…0475c
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
1000 smallest units
Buys
Cross-venue funding-rate spread for one crypto perpetual — the highest- and lowest-paying venues and the spread in bps, across major CEX and DEX venues (Binance, Bybit, OKX, Hyperliquid …). `spread_bps` is the RAW rate difference, the same quantity and name as on `/v1/perp/arbitrage/funding`; `normalized_spread_8h_bps` scales both legs to 8h, the comparable one, since venues quote on 1h/4h/8h. Leg intervals ship with the row; normalized is null when a schedule is unknown, never defaulted.
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://api.usenami.io/v1/perp/funding-spread",
    "description": "Cross-venue funding-rate spread for one crypto perpetual — the highest- and lowest-paying venues and the spread in bps, across major CEX and DEX venues (Binance, Bybit, OKX, Hyperliquid …). `spread_bps` is the RAW rate difference, the same quantity and name as on `/v1/perp/arbitrage/funding`; `normalized_spread_8h_bps` scales both legs to 8h, the comparable one, since venues quote on 1h/4h/8h. Leg intervals ship with the row; normalized is null when a schedule is unknown, never defaulted.",
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "ticker": {
            "type": "string",
            "required": true,
            "description": "Base ticker (e.g. BTC, ETH). Required."
          },
          "canonical_id": {
            "type": "string",
            "required": false,
            "description": "Disambiguates a ticker that names two unrelated assets; a 409 on the ticker alone names the candidates."
          }
        }
      },
      "output": {
        "spread": {
          "ticker": "BTC",
          "long_rate": -0.0001,
          "long_venue": "dydx",
          "short_rate": 0.0003,
          "spread_bps": 4,
          "updated_at": "2026-05-17T20:00:00Z",
          "short_venue": "binance",
          "apr_spread_pct": 120.45,
          "long_interval_hours": 1,
          "short_interval_hours": 8,
          "normalized_spread_8h_bps": 11
        },
        "ticker": "BTC",
        "venues_count": 18
      }
    },
    "maxAmountRequired": "1000",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "ticker": {
            "type": "string",
            "required": true,
            "description": "Base ticker (e.g. BTC, ETH). Required."
          },
          "canonical_id": {
            "type": "string",
            "required": false,
            "description": "Disambiguates a ticker that names two unrelated assets; a 409 on the ticker alone names the candidates."
          }
        }
      },
      "output": {
        "type": "json",
        "example": {
          "spread": {
            "ticker": "BTC",
            "long_rate": -0.0001,
            "long_venue": "dydx",
            "short_rate": 0.0003,
            "spread_bps": 4,
            "updated_at": "2026-05-17T20:00:00Z",
            "short_venue": "binance",
            "apr_spread_pct": 120.45,
            "long_interval_hours": 1,
            "short_interval_hours": 8,
            "normalized_spread_8h_bps": 11
          },
          "ticker": "BTC",
          "venues_count": 18
        }
      }
    },
    "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
—
Last indexed by Roundhouse
2026-09-18 05:15Z
Last enriched (probe, favicon, geo)
2026-09-19 09:45Z
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

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/perp/funding-spread, 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.