x402 List

x402 Protocol Service Directory

●

Usenami

Data PAYMENT-READY imported

payment-ready until 2026-08-20

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.

Pay from $0.001 to $0.01 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-05-13 · $5.26 all-time · settled via coinbase

BASE URL https://api.usenami.io │ ENDPOINTS 10 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-20 │ MONITORED SINCE 2026-07-20

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 95.3%
uptime 24h
100%
uptime 7d
100%
uptime 30d
95.3%
uptime 90d
95.3%
response p95
683ms
avg response
245ms
total checks
2,144

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

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.001 to $0.01 (p9 in Data)
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%
risk clean

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.

traction $1.515 30d · 11 buyers
volume 30d
$1.515
buyers 30d
11
settlements 30d
899
first settlement
2026-05-13
last settlement
2026-08-12
top buyer share
37% of 30d volume
trend 7d vs 30d
0.67x the 30d daily rate
networks
eip155:8453
volume all-time
$5.26
settlements all-time
1,971
median settlement 30d
$0.001
max settlement 30d
$0.05
settled via
coinbase ($1.51, 899 tx)

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

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

1 event, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes price changed 2d ago (1 since 2026-07-24)

price changed · 2d ago

GET /v1/perp/arbitrage/funding-signal · eip155:8453 · USDC: 25000 → 5000

Amounts are on-wire atomic units in the named asset.

see all changes for this service

WHAT IT DOES

ai-derived

Usenami provides cryptocurrency derivatives market data including funding rates, orderbook information, and arbitrage opportunities for perpetual futures.

category
crypto-derivatives-data
in
query params
auth
api key
cryptoderivativesfunding-ratesorderbookarbitrageperpetual-futuresmarket-data

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /v1/funding/current $0.001 Base USDC header
GET /v1/orderbook/multi-venue-execution $0.01 Base USDC header
GET /v1/orderbook/multi-venue-slippage $0.005 Base USDC header
GET /v1/perp/arbitrage/funding $0.003 Base USDC header
GET /v1/perp/arbitrage/funding-signal $0.005 Base USDC header
GET /v1/perp/arbitrage/price $0.003 Base USDC header
GET /v1/perp/funding-next $0.003 Base USDC header
GET /v1/perp/oi-delta $0.003 Base USDC header
GET /v1/perp/oracle-families $0.001 Base USDC header
GET /v1/perp/volume-history $0.005 Base USDC header
10 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /v1/funding/current returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://api.usenami.io/v1/funding/current'
// 402 response (captured by monitor) · 10 payloads · click to expand 
[
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  },
  {
    "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
  }
]

OVER TIME

All charts use the 7d selector; 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. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-07 · uptime 100.0% · 250ms avg08-08 · uptime 100.0% · 276ms avg08-09 · uptime 100.0% · 269ms avg08-10 · uptime 100.0% · 219ms avg08-11 · uptime 100.0% · 425ms avg08-12 · uptime 100.0% · 353ms avg08-13 · uptime 100.0% · 235ms avg08-0708-13
7d UPTIME 100%
RESPONSE TIME
08-07 · 250ms avg08-07 · 250ms avg08-08 · 276ms avg08-08 · 276ms avg08-09 · 269ms avg08-09 · 269ms avg08-10 · 219ms avg08-10 · 219ms avg08-11 · 425ms avg08-11 · 425ms avg08-12 · 353ms avg08-12 · 353ms avg08-13 · 235ms avg08-13 · 235ms avg08-0708-13
AVG RESP 245ms
PRICE (captured 402, USD)
08-06 · $0.00308-11 · $0.00308-13 · $0.003$0.00308-0608-13

Median across 10 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-06 uptime: 93.5% compliance: 100% checks08-07 uptime: 93.8% compliance: 100% checks08-08 uptime: 94.2% compliance: 100% checks08-09 uptime: 94.5% compliance: 100% checks08-10 uptime: 94.7% compliance: 100% checks08-11 uptime: 95.0% compliance: 100% checks08-12 uptime: 95.1% compliance: 100% checks08-13 uptime: 95.3% compliance: 100% checksuptimecompliance08-0608-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Data
site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
08-07 · $0.0208-08 · $0.0108-09 · $0.0008-10 · $0.0008-11 · $0.0408-12 · $0.15peak $0.1508-0708-12
DISTINCT BUYERS
08-07 · 3 buyers08-08 · 1 buyer08-09 · 1 buyer08-10 · 2 buyers08-11 · 3 buyers08-12 · 1 buyerpeak 3 buyers08-0708-12

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-11 · last up 2026-08-13

  • 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

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 150ms
● OK 137ms
● OK 175ms
● OK 148ms
● OK 171ms
● OK 183ms
● OK 183ms
● OK 205ms
● OK 160ms
● OK 148ms
● OK 221ms
● OK 330ms
● OK 307ms
● SLOW 456ms
● OK 287ms
● OK 173ms
● OK 230ms
● OK 324ms
18 of 2,158 checks · live count

EMBED THIS BADGE

Show that Usenami is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

Usenami listed on x402-list
status
Usenami uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/usenami?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/usenami.svg" alt="Usenami listed on x402-list" height="28">
</a>
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// HTML · live uptime variant
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</a>

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