Usenami

payment-readydegradedimported

payment-ready until 2026-10-26

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Pay-per-call API for perpetual futures market data across 30+ CEX and DEX venues: funding rates and cross-venue spreads, orderbook depth and slippage, open interest, basis and carry, and funding arbitrage signals.

api.usenami.io ↗

Call it x402 v2

x402 v2

Base URL: https://api.usenami.io
Payment: x402 v2, header channel

$ curl -i 'https://api.usenami.io/v1/funding/current'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 10 paid routes on api.usenami.io

GET/v1/funding/currentBase$0.001since 07-20

GET/v1/orderbook/multi-venue-executionBase$0.01since 07-20

GET/v1/orderbook/multi-venue-slippageBase$0.005since 07-20

GET/v1/perp/arbitrage/fundingBase$0.003since 07-20

GET/v1/perp/arbitrage/funding-signalBase$0.005since 07-20

GET/v1/perp/arbitrage/priceBase$0.003since 07-20

GET/v1/perp/funding-nextBase$0.003since 07-20

GET/v1/perp/oi-deltaBase$0.003since 07-20

2 more in Example 402 response

Prices as captured in the 402 response: median $0.003 across the 10 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
Method	Path	Description	Price	Network	Asset	402 channel	Captured
GET	/v1/funding/current	Funding rates per venue for one crypto perpetual, or the whole cross-venue set in one call. Major CEX and DEX venues · Binance, Bybit, OKX, Bitget, Gate.io, KuCoin, Hyperliquid, Paradex, Orderly, Lighter and more. Each row carries the venue's rate, its funding interval and the 8h-equivalent rate (venues quote on 1h/4h/8h, so raw rates are not comparable), plus canonical_id, asset_class and mark_price, so a ticker naming two unrelated assets is visible, not silently mixed.	$0.001	Base	USDC	header	since 07-20
GET	/v1/orderbook/multi-venue-execution	No description	$0.01	Base	USDC	header	since 07-20
GET	/v1/orderbook/multi-venue-slippage	No description	$0.005	Base	USDC	header	since 07-20
GET	/v1/perp/arbitrage/funding	Cross-venue funding-rate arbitrage scan over all tracked crypto perpetuals: every ticker whose (max_rate − min_rate) across venues exceeds your threshold. Naive filter, no signal logic · gross spread, before fees, slippage and funding-interval differences.	$0.003	Base	USDC	header	since 07-20
GET	/v1/perp/arbitrage/funding-signal	Funding-arb SIGNAL for crypto perpetuals · the cross-venue funding spread per pair, set against public round-trip taker fees, with periods-to-breakeven, ranked by the 8h-normalized spread. Liquidity is not assessed: depth sizing was withdrawn on 2026-09-16, so check the books before sizing. A derived outcome, not a profit forecast.	$0.005	Base	USDC	header	since 07-20
GET	/v1/perp/arbitrage/price	Cross-venue mark-price spread scan for crypto perpetuals · where the same perp trades at different marks across venues. Quoted spread is not net edge: it excludes fees, slippage and funding differences.	$0.003	Base	USDC	header	since 07-20
GET	/v1/perp/funding-next	Next funding payment ETA for one crypto perpetual on one venue, with the current indicative funding rate alongside · when the next settlement lands and where the rate stands now. Entry-timing input for funding-arb and carry trades. Not a payment forecast: the endpoint takes no position side or size, and the rate can move before settlement.	$0.003	Base	USDC	header	since 07-20
GET	/v1/perp/oi-delta	Open-interest delta for one crypto perpetual on one venue · current OI against OI N hours ago. Accumulation or distribution signal: whether positioning is building or unwinding.	$0.003	Base	USDC	header	since 07-20
GET	/v1/perp/oracle-families	Oracle price-source family classification across tracked crypto perp venues · which venues derive their index price from the same upstream feed. Basis-risk awareness for cross-venue and funding-arb strategies: two venues sharing an oracle family will not diverge independently, so a spread between them is not the hedge it looks like.	$0.001	Base	USDC	header	since 07-20
GET	/v1/perp/volume-history	Historical 24h-volume timeseries for one crypto perpetual on one venue, aggregated 1h/4h/1d · liquidity over time for backtests and venue selection. 30–90d window cap.	$0.005	Base	USDC	header	since 07-20

Payment evidence

402 payload captured at 2026-08-11 08:00:10 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/oracle-families",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Oracle price-source family classification across tracked crypto perp venues — which venues derive their index price from the same upstream feed. Basis-risk awareness for cross-venue and funding-arb strategies: two venues sharing an oracle family will not diverge independently, so a spread between them is not the hedge it looks like.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "type": "json",
          "example": {
            "families": [
              {
                "family": "cex_aggregated",
                "method": "Weighted median of top CEX spot prices",
                "venues": [
                  "binance",
                  "bybit",
                  "hyperliquid"
                ]
              },
              {
                "family": "pyth_stork",
                "method": "Decentralized oracle networks",
                "venues": [
                  "paradex",
                  "lighter"
                ]
              }
            ],
            "total_venues": 28
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Other captured 402 responses (9)

Captured payload 2 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/funding-next",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Next funding payment ETA for one crypto perpetual on one venue, with the current indicative funding rate alongside — when the next settlement lands and where the rate stands now. Entry-timing input for funding-arb and carry trades. Not a payment forecast: the endpoint takes no position side or size, and the rate can move before settlement.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "venue": {
              "type": "string",
              "description": "Venue name (e.g. binance, hyperliquid). Required."
            },
            "ticker": {
              "type": "string",
              "description": "Base ticker (e.g. BTC, ETH). Required."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "venue": "binance",
            "ticker": "BTC",
            "mark_price": 107234.5,
            "updated_at": "2026-05-31T17:03:12Z",
            "current_rate": 0.0001,
            "next_funding_time": "2026-05-31T20:00:00Z",
            "funding_interval_hours": 8
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/orderbook/multi-venue-execution",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Greedy multi-venue execution route for one crypto perpetual: walks venues in slippage order, allocating up to each venue's depth cap until size_usd is filled. Returns the route, total filled and blended slippage — how a large order splits across CEX and DEX venues. NAIVE: excludes fees.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "ticker": {
              "type": "string",
              "description": "Base ticker. Required."
            },
            "size_usd": {
              "enum": [
                1000,
                5000,
                10000
              ],
              "type": "integer",
              "description": "Notional size. Default 10000."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "route": [
              {
                "venue": "binance",
                "best_ask": 104251,
                "best_bid": 104250.5,
                "slippage_bps": 1.2,
                "allocated_usd": 10000,
                "max_fillable_usd": 220000
              }
            ],
            "ticker": "BTC",
            "size_usd": 10000,
            "naive_note": "Excludes fees/funding/latency — baseline only.",
            "venues_used": 1,
            "unfilled_usd": 0,
            "total_filled_usd": 10000,
            "blended_slippage_bps": 1.2
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/funding/current",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Live perpetual-futures funding rates per venue for one crypto symbol, or the whole cross-venue set in one call. Major CEX and DEX perp venues — Binance, Bybit, OKX, Bitget, Gate.io, KuCoin, Hyperliquid, Paradex, Drift, Orderly, Lighter and more. Each venue's current rate plus its next funding time.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": {
              "type": "integer",
              "maximum": 1000,
              "minimum": 1,
              "description": "Rows per page. Default 100, max 1000. Unfiltered the set is ~9,000 rows, so paging is how you avoid buying all of it into your context."
            },
            "offset": {
              "type": "integer",
              "minimum": 0,
              "description": "Row offset for the next page. Default 0. The response carries total/limit/offset/has_more, so you know when to stop."
            },
            "symbol": {
              "type": "string",
              "description": "Filter by symbol (e.g. BTC-PERP). Omit for all."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "limit": 100,
            "rates": [
              {
                "rate": 0.0001,
                "venue": "binance",
                "next_funding_time": "2026-05-17T20:00:00Z"
              },
              {
                "rate": 0.00015,
                "venue": "hyperliquid",
                "next_funding_time": "2026-05-17T20:00:00Z"
              }
            ],
            "total": 9063,
            "offset": 0,
            "symbol": "BTC-PERP",
            "has_more": true
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/orderbook/multi-venue-slippage",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Per-venue slippage scan for one crypto perpetual at $1K/$5K/$10K notional, across tracked CEX and DEX venues — every venue sorted by lowest slippage, with BBO and depth. Raw scan, no opinionated ranking: where a given size is cheapest to execute.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "ticker": {
              "type": "string",
              "description": "Base ticker. Required."
            },
            "size_usd": {
              "enum": [
                1000,
                5000,
                10000
              ],
              "type": "integer",
              "description": "Notional size. Default 10000."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 2,
            "ticker": "BTC",
            "venues": [
              {
                "venue": "binance",
                "best_ask": 104251,
                "best_bid": 104250.5,
                "spread_bps": 0.48,
                "updated_at": "2026-05-31T17:00:00Z",
                "slippage_bps": 1.2,
                "ask_depth_usd": 220000,
                "bid_depth_usd": 250000
              },
              {
                "venue": "okx",
                "best_ask": 104252.5,
                "best_bid": 104248,
                "spread_bps": 0.43,
                "updated_at": "2026-05-31T17:00:00Z",
                "slippage_bps": 1.8,
                "ask_depth_usd": 195000,
                "bid_depth_usd": 180000
              }
            ],
            "size_usd": 10000
          }
        }
      },
      "schema": {
        "type": "object",
        "$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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/arbitrage/price",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Cross-venue mark-price spread scan for crypto perpetuals — where the same perp trades at different marks across venues. Quoted spread is not net edge: it excludes fees, slippage and funding differences.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": {
              "type": "integer",
              "description": "Max results. Default 50, max 100."
            },
            "min_diff_bps": {
              "type": "number",
              "description": "Threshold in bps. Default 10."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "min_diff_bps": 10,
            "opportunities": [
              {
                "ticker": "DOGE",
                "max_price": 0.0855,
                "max_venue": "mexc",
                "mid_price": 0.0853,
                "min_price": 0.0851,
                "min_venue": "binance",
                "spread_bps": 46.89,
                "updated_at": "2026-05-26T17:03:09Z",
                "venues_count": 14
              }
            ]
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/oi-delta",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Open-interest delta for one crypto perpetual on one venue — current OI against OI N hours ago. Accumulation or distribution signal: whether positioning is building or unwinding.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "venue": {
              "type": "string",
              "description": "Venue name. Required."
            },
            "ticker": {
              "type": "string",
              "description": "Base ticker. Required."
            },
            "lookback_hours": {
              "type": "integer",
              "description": "Hours to look back. Default 24, max 168."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "venue": "binance",
            "ticker": "BTC",
            "past_oi": 95012.5,
            "past_ts": "2026-05-30T16:00:00Z",
            "delta_pct": 3.83,
            "current_oi": 98650.31,
            "current_ts": "2026-05-31T16:00:00Z",
            "lookback_hours": 24
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 8 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/volume-history",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Historical 24h-volume timeseries for one crypto perpetual on one venue, aggregated 1h/4h/1d — liquidity over time for backtests and venue selection. 30–90d window cap.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "to": {
              "type": "string",
              "format": "date-time",
              "description": "Default: now."
            },
            "aggr": {
              "enum": [
                "1h",
                "4h",
                "1d"
              ],
              "type": "string",
              "description": "Default 1h."
            },
            "from": {
              "type": "string",
              "format": "date-time",
              "description": "Default: 7 days ago."
            },
            "venue": {
              "type": "string",
              "description": "Venue name. Required."
            },
            "ticker": {
              "type": "string",
              "description": "Base ticker. Required."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "venue": "binance",
            "ticker": "BTC",
            "buckets": [
              {
                "value": 11029446855.42,
                "venue": "binance",
                "samples": 1,
                "bucket_start": "2026-05-24T00:00:00Z"
              }
            ],
            "window_end": "2026-05-31T00:00:00Z",
            "aggregation": "1h",
            "window_start": "2026-05-24T00:00:00Z"
          }
        }
      },
      "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 9 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/arbitrage/funding-signal",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Decision-ready funding-arb SIGNAL for crypto perpetuals — cross-venue gross spread taken net of public round-trip taker fees, periods-to-breakeven, and depth-sized max notional at $1k/$5k/$10k, ranked. A derived outcome, not a profit forecast.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": {
              "type": "integer",
              "description": "Max results. Default 50, max 100."
            },
            "min_diff": {
              "type": "number",
              "description": "Absolute funding spread threshold. Default 0.0001."
            },
            "include_below_1k": {
              "type": "boolean",
              "description": "Include opportunities whose on-book depth can't support even $1k. Default false = decision-ready, ≥$1k only."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "methodology": "Gross funding spread minus round-trip taker fees, sized to on-book depth.",
            "opportunities": [
              {
                "ticker": "BTC",
                "long_venue": "okx",
                "updated_at": "2026-06-17T17:03:12Z",
                "depth_class": "deep",
                "short_venue": "binance",
                "signal_score": 8,
                "venues_count": 18,
                "max_notional_usd": 10000,
                "entry_slippage_bps": 3.4,
                "round_trip_fee_bps": 20,
                "gross_funding_spread_bps": 8,
                "funding_periods_to_breakeven": 2.5
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1538726707212F4dB3EB67cEc0910422A310475c",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.usenami.io/v1/perp/arbitrage/funding",
    "tags": [
      "funding",
      "perpetual",
      "trading",
      "multi-venue",
      "market-data"
    ],
    "iconUrl": "https://usenami.io/logo/usenami-arc.svg",
    "mimeType": "application/json",
    "description": "Cross-venue funding-rate arbitrage scan over all tracked crypto perpetuals: every ticker whose (max_rate − min_rate) across venues exceeds your threshold. Naive filter, no signal logic — gross spread, before fees, slippage and funding-interval differences.",
    "serviceName": "Usenami"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "limit": {
              "type": "integer",
              "description": "Max results. Default 50, max 100."
            },
            "min_diff": {
              "type": "number",
              "description": "Absolute spread threshold. Default 0.0001."
            }
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "min_diff": 0.0001,
            "opportunities": [
              {
                "spread": 0.0004,
                "ticker": "BTC",
                "max_rate": 0.0003,
                "min_rate": -0.0001,
                "max_venue": "binance",
                "min_venue": "okx",
                "spread_bps": 4,
                "updated_at": "2026-05-26T17:03:12Z",
                "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

82/100 Solid

                           │         │   ·····│···
0                          55        75       93

                │     │  ··│··
0               55    75   93

#231 of 386 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 100% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.001 to $0.01 p9 in Data
Risk: clean no risk flag
Traction: $0.32 30d 12 buyers, top buyer 89% (address, not entity)

14/14 compliance checks

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-08-11. Last up 2026-10-19.

── Site signals

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

How the score works

What the score read on this service: status degraded, 100% uptime 30d, 375ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 386 listings, this one among them: the same 386 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($0.32, 101 tx). Traction is a conservative undercount; first settlement seen 2026-05-13.

All measured facts

What it does

Usenami is a listed x402 Data API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at 2026-10-19 08:03:46 UTC. Latest service check observed at 2026-10-19 11:34:34 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-19 11:42:22 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-19 11:34:34 UTC. Latest price capture: 2026-08-11 07:44:08 UTC. Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at 2026-10-19 08:03:46 UTC. Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-20 to 2026-10-19 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: 2026-10-16 14:08:09 UTC. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Data

uptime · latest daily rollup: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 98.6%
response p95: 375ms
avg response: 329ms
total checks: 2,714

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min): $0.001
price (max): $0.01
category percentile (min): p9 in Data
category percentile (max): p24 in Data
endpoints / prices: 10 / 4
model: tiered
stability: 0%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

assessment volume 30d: $0.32
exact assessment volume 30d (USD): 0.323
assessment recorded at (UTC): 2026-10-19T08:03:46.468Z
buyers 30d: 12
settlements 30d: 101
measured since: 2026-05-13 (start of our harvest window)
last settlement: 2026-10-16
top buyer share: 89% of 30d volume (address, not entity)
top 3 buyers share: 94% of 30d volume (addresses, not entities)
concentrated volume: no
trend 7d vs 30d: 3.85x the 30d daily rate
networks: eip155:8453
volume all-time: $6.18
settlements all-time: 2,268
median settlement 30d: $0.003
max settlement 30d: $0.005

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since: 2026-07-20

Recent checks

Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-19 11:34:34 UTC	Online	402	236ms	8
2026-10-19 11:18:39 UTC	Online	402	278ms	8
2026-10-19 10:57:34 UTC	Online	402	275ms	8
2026-10-19 10:36:24 UTC	Online	402	224ms	8
2026-10-19 10:20:23 UTC	Online	402	269ms	8
2026-10-19 10:04:22 UTC	Online	402	229ms	8
2026-10-19 09:48:21 UTC	Online	402	225ms	8
2026-10-19 09:32:23 UTC	Online	402	238ms	8
2026-10-19 09:16:19 UTC	Online	402	175ms	8
2026-10-19 09:00:23 UTC	Online	402	263ms	8
2026-10-19 08:44:26 UTC	Online	402	273ms	8
2026-10-19 08:27:21 UTC	Online	402	222ms	8
2026-10-19 08:11:23 UTC	Online	402	243ms	8
2026-10-19 07:55:21 UTC	Online	402	329ms	8
2026-10-19 07:39:18 UTC	Online	402	231ms	8
2026-10-19 07:23:20 UTC	Online	402	299ms	8
2026-10-19 07:07:20 UTC	Online	402	299ms	8
2026-10-19 06:51:17 UTC	Online	402	302ms	8

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.32, peak $0.24 on 10-15

                                                                                  $0.24          
                                                                                  ██             
                                                                                  ██             
                                                                                  ██             
                                                                                  ██             
       ·              ·  ·  ·  ·     ·  ·  ·        ▂▂ ▂▂       ·  ·     ·  ·     ██ ██ ·  ·  ·  
    $0

volume no data in the payload

Distinct buyers per dayDistinct buyers per day

        ·  1  1  1  1  ·  ·  ·  ·  1  ·  ·  ·  2  2  2  2  1  1  ·  ·  1  ·  ·  1  2  1  ·  ·  ·

Uptime 100% on all 29 completed days

       ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██

       09-20                                     10-04                                   10-19*

Volume 30d: $0.32
Uptime: 100% on all 29 completed days

Daily on-chain settlement volume in US dollars, 2026-09-20 to 2026-10-19; highest day $0.24 on 10-15; 15 days have no data in the payload; distinct buyers per day

Day    Volume             USD  Buyers
09-20  · no data
09-21                  $0.00†       1
09-22                  $0.00†       1
09-23                  $0.00†       1
09-24                  $0.00†       1
09-25  · no data, 4 days to 09-28
09-29                  $0.00†       1
09-30  · no data, 3 days to 10-02
10-03                  $0.00†       2
10-04                  $0.00†       2
10-05                   $0.01       2
10-06                   $0.01       2
10-07                  $0.00†       1
10-08                  $0.00†       1
10-09  · no data, 2 days to 10-10
10-11                  $0.00†       1
10-12  · no data, 2 days to 10-13
10-14                  $0.00†       1
10-15                   $0.24       2
10-16                   $0.05       1
10-17  · no data, 3 days to 10-19*

More charts

Response time daily average, ms min 204ms, avg 323ms, max 557ms

       ▅▅ ▆▆ ▅▅ ██ ▅▅ ▄▄ ▅▅ ▅▅ ▅▅ ▅▅ ▄▄ ▄▄ ▃▃ ▅▅ ██ ▇▇ ▇▇ ▄▄ ▄▄ ▄▄ ▄▄ ▅▅ ▄▄ ▄▄ ▄▄ ▃▃ ▃▃ ▄▄ ▄▄ ▄▄

09-20 to 10-19* UTC

      ▅▆▅█▅▄▅▅▅▅▄▄▃▅█▇▇▄▄▄▄▅▄▄▄▃▃▄▄▄

      09-20         10-04     10-19*

Scores over time

x402 compliance low 14/14, high 14/14

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-20 to 10-19* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-20         10-04     10-19*

Price percentile in Data own low to high; exact values below

       ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▇▇ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁

09-20 to 10-19* UTC

      ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁

      09-20         10-04     10-19*

Site signals present (of 6) own low to high; exact values below

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-20 to 10-19* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-20         10-04     10-19*

       09-20                                     10-04                                   10-19*

      09-20         10-04     10-19*

Scores: one day per column, 09-20 to 10-19*, on the columns of Response time. Uptime held 100% every day in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/usenami/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $0.31, peak $0.24 on 10-15. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-09-20 to 2026-10-19 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here. † marks a recorded $0.00 with settlements.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at 2026-10-19 08:03:46 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-20 to 2026-10-19: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-09-20	no data	no data	no data	100%	317.99ms	14/14	p10	2/6
2026-09-21	$0.00 recorded†	1	1	100%	388.57ms	14/14	p10	2/6
2026-09-22	$0.00 recorded†	1	1	100%	330.02ms	14/14	p10	2/6
2026-09-23	$0.00 recorded†	1	1	100%	522.73ms	14/14	p10	2/6
2026-09-24	$0.00 recorded†	1	1	100%	353.14ms	14/14	p10	2/6
2026-09-25	no data	no data	no data	100%	299.20ms	14/14	p10	2/6
2026-09-26	no data	no data	no data	100%	335.93ms	14/14	p10	2/6
2026-09-27	no data	no data	no data	100%	375.79ms	14/14	p10	2/6
2026-09-28	no data	no data	no data	100%	379.41ms	14/14	p10	2/6
2026-09-29	$0.00 recorded†	1	1	100%	322.26ms	14/14	p10	2/6
2026-09-30	no data	no data	no data	100%	301.07ms	14/14	p10	2/6
2026-10-01	no data	no data	no data	100%	271.70ms	14/14	p10	2/6
2026-10-02	no data	no data	no data	100%	214.54ms	14/14	p10	2/6
2026-10-03	$0.00 recorded†	2	2	100%	352.70ms	14/14	p10	2/6
2026-10-04	$0.00 recorded†	2	2	100%	556.72ms	14/14	p10	2/6
2026-10-05	$0.01	2	6	100%	480.50ms	14/14	p10	2/6
2026-10-06	$0.01	2	2	100%	455.68ms	14/14	p10	2/6
2026-10-07	$0.00 recorded†	1	1	100%	282.31ms	14/14	p10	2/6
2026-10-08	$0.00 recorded†	1	1	100%	296.60ms	14/14	p10	2/6
2026-10-09	no data	no data	no data	100%	261.14ms	14/14	p10	2/6
2026-10-10	no data	no data	no data	100%	273.32ms	14/14	p10	2/6
2026-10-11	$0.00 recorded†	1	2	100%	332.40ms	14/14	p10	2/6
2026-10-12	no data	no data	no data	100%	286.20ms	14/14	p10	2/6
2026-10-13	no data	no data	no data	100%	250.73ms	14/14	p10	2/6
2026-10-14	$0.00 recorded†	1	1	100%	245.36ms	14/14	p9	2/6
2026-10-15	$0.24	2	65	100%	207.43ms	14/14	p9	2/6
2026-10-16	$0.05	1	14	100%	204.39ms	14/14	p9	2/6
2026-10-17	no data	no data	no data	100%	255.42ms	14/14	p9	2/6
2026-10-18	no data	no data	no data	100%	255.87ms	14/14	p9	2/6
2026-10-19*	no data	no data	no data	100%	283.32ms	14/14	p9	2/6

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cn402 strong 93/100 100% up 30d $39.26 30d

twit.sh strong 93/100 100% up 30d $47.43 30d

5 of 385 other ranked services in Data, ordered by the same measured score.

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