{
  "x402Version": 2,
  "id": 12533,
  "slug": "12533",
  "resource": "https://apexrunner.ai/signals/cross-exchange-spread",
  "description": "APEX Runner: Cross Exchange Spread Signal",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x8D0663BBb967ebF1c047405A888DDf865f3E8854",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "7000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "category": "trading-signals",
      "description": "Real-time Kraken vs Hyperliquid cross-exchange arbitrage spread for BTC and ETH. Returns mid-price per exchange, gross and net spread %, arb direction, and viability vs 0.35% threshold. Sourced from APEX Runner's live cross-exchange arb monitoring database.",
      "example": {
        "active_arbs": 0,
        "arb_threshold_pct": 0.35,
        "best_net_spread_pct": -0.2,
        "best_spread_asset": "BTC",
        "cached_at": "2026-06-13T12:00:00+00:00",
        "interpretation": "No arb opportunities above 0.35% — best spread: BTC at -0.200%",
        "pairs": {
          "BTC": {
            "arb_active": false,
            "asset": "BTC",
            "direction": "kr_buy_hl_sell",
            "gross_spread_pct": 0.11,
            "hl_mid": 63762.5,
            "kr_mid": 63695.45,
            "net_spread_pct": -0.2
          }
        }
      },
      "info": {
        "input": {
          "method": "GET",
          "type": "http"
        },
        "output": {
          "active_arbs": "int — count of pairs above threshold",
          "arb_threshold_pct": "float — arb threshold (0.35%)",
          "best_net_spread_pct": "float — best net spread %",
          "best_spread_asset": "string — asset with highest net spread",
          "cached_at": "ISO8601 timestamp",
          "example": {
            "active_arbs": 0,
            "arb_threshold_pct": 0.35,
            "best_net_spread_pct": -0.15,
            "best_spread_asset": "BTC",
            "cached_at": "2026-06-13T12:00:00+00:00",
            "interpretation": "No arb opportunities above 0.35% — best spread: ETH at -0.150%",
            "pairs": {
              "BTC": {
                "arb_active": false,
                "asset": "BTC",
                "direction": "kr_buy_hl_sell",
                "gross_spread_pct": 0.11,
                "hl_mid": 63762.5,
                "kr_mid": 63695.45,
                "net_spread_pct": -0.2,
                "spread_vs_threshold": -0.55
              },
              "ETH": {
                "arb_active": false,
                "asset": "ETH",
                "direction": "kr_buy_hl_sell",
                "gross_spread_pct": 0.16,
                "hl_mid": 1681.45,
                "kr_mid": 1678.8,
                "net_spread_pct": -0.15,
                "spread_vs_threshold": -0.5
              }
            }
          },
          "interpretation": "string — plain-English arb summary",
          "pairs": "object — keyed by asset (BTC/ETH), each with direction, gross/net spread %, kr_mid, hl_mid, arb_active bool, spread_vs_threshold",
          "type": "json"
        }
      },
      "name": "APEX Cross-Exchange Spread",
      "outputSchema": {
        "active_arbs": "int",
        "arb_threshold_pct": "float",
        "best_net_spread_pct": "float",
        "best_spread_asset": "string",
        "cached_at": "string",
        "interpretation": "string",
        "pairs": "object"
      },
      "schema": {
        "properties": {
          "input": {
            "properties": {
              "queryParams": {
                "properties": {},
                "type": "object"
              }
            },
            "required": [
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "_apex": {
                    "properties": {
                      "evolution_runs": {
                        "type": "integer"
                      },
                      "instance": {
                        "type": "string"
                      },
                      "live_capital_deployed": {
                        "type": "boolean"
                      },
                      "live_trading": {
                        "type": "boolean"
                      },
                      "signal": {
                        "type": "string"
                      },
                      "signal_hash": {
                        "type": "string"
                      },
                      "source": {
                        "type": "string"
                      },
                      "trades_backing_signal": {
                        "type": "integer"
                      },
                      "verify_at": {
                        "type": "string"
                      },
                      "version": {
                        "type": "string"
                      }
                    },
                    "type": "object"
                  },
                  "active_arbs": {
                    "type": "integer"
                  },
                  "arb_threshold_pct": {
                    "type": "number"
                  },
                  "best_net_spread_pct": {
                    "type": "number"
                  },
                  "best_spread_asset": {
                    "type": "string"
                  },
                  "cached_at": {
                    "type": "string"
                  },
                  "interpretation": {
                    "type": "string"
                  },
                  "pairs": {
                    "properties": {
                      "ETH": {
                        "properties": {
                          "arb_active": {
                            "type": "boolean"
                          },
                          "asset": {
                            "type": "string"
                          },
                          "direction": {
                            "type": "string"
                          },
                          "gross_spread_pct": {
                            "type": "number"
                          },
                          "hl_mid": {
                            "type": "number"
                          },
                          "kr_mid": {
                            "type": "number"
                          },
                          "net_spread_pct": {
                            "type": "number"
                          },
                          "spread_vs_threshold": {
                            "type": "number"
                          },
                          "timestamp": {
                            "type": "string"
                          }
                        },
                        "type": "object"
                      }
                    },
                    "type": "object"
                  }
                },
                "type": "object"
              }
            },
            "type": "object"
          }
        },
        "type": "object"
      },
      "version": "1.0.0"
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "apexrunner.ai",
  "lastUpdated": "2026-09-08T23:42:51.982Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-08T23:42:51.826Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "apexrunner.ai",
    "manifest_name": "apexrunner.ai",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}