APEX Runner: Cross Asset Contagion Signal

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x8D0663BBb967ebF1c047405A888DDf865f3E8854",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "7000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "category": "trading-signals",
    "description": "Exotic signal at $15. When BTC moves sharply, predicts ETH/SOL/AVAX response magnitude and lag based on APEX's real cross-exchange grid fill timing observations. Returns predicted move % and lag minutes per coin. Price correlation derived from Kraken live exchange data — same venue APEX trades on.",
    "example": {
      "btc_move_1h_pct": -2.3,
      "btc_move_4h_pct": -3.1,
      "contagion_active": true,
      "contagion_severity": "MODERATE",
      "data_points_used": 268,
      "predictions": {
        "ETH": {
          "confidence": 0.72,
          "historical_correlation": 0.91,
          "lag_minutes": 8,
          "predicted_move_pct": -2.1
        }
      },
      "recommended_action": "REDUCE_EXPOSURE",
      "valid_for_seconds": 900
    },
    "info": {
      "input": {
        "method": "GET",
        "type": "http"
      },
      "output": {
        "btc_move_1h_pct": "float — BTC price change % over last 1 hour",
        "btc_move_4h_pct": "float — BTC price change % over last 4 hours",
        "contagion_active": "boolean — true when abs(4h move) >= 1.5%",
        "contagion_severity": "string — LOW / MODERATE / HIGH / EXTREME",
        "data_points_used": "integer — HL grid fills analyzed for correlation",
        "example": {
          "btc_move_4h_pct": -3.1,
          "contagion_active": true,
          "contagion_severity": "MODERATE",
          "recommended_action": "REDUCE_EXPOSURE"
        },
        "predictions": "object — keyed by coin (ETH/SOL/AVAX), each with predicted_move_pct, lag_minutes, confidence, historical_correlation",
        "recommended_action": "string — REDUCE_EXPOSURE / HEDGE_ALTS / SCALE_IN / MONITOR",
        "type": "json"
      },
      "why_apex": {
        "live_system": "APEX trades real capital 24/7 on Kraken, Coinbase, and Hyperliquid simultaneously",
        "multi_exchange": "Cross-exchange data synthesis unavailable from any single-venue provider",
        "not_backtested": "All signals derived from live order flow — 2,988 real grid trades, 82.8% win rate across Kraken, Coinbase, and Hyperliquid",
        "self_evolving": "AI evolution engine runs nightly, signal logic improves from real outcomes"
      }
    },
    "name": "APEX Cross-Asset Contagion",
    "outputSchema": {
      "btc_move_4h_pct": "float",
      "contagion_active": "boolean",
      "contagion_severity": "string",
      "predictions": "object",
      "recommended_action": "string"
    },
    "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"
                },
                "btc_move_1h_pct": {
                  "type": "number"
                },
                "btc_move_4h_pct": {
                  "type": "number"
                },
                "contagion_active": {
                  "type": "boolean"
                },
                "contagion_severity": {
                  "type": "string"
                },
                "correlation_source": {
                  "type": "string"
                },
                "data_points_used": {
                  "type": "integer"
                },
                "predictions": {
                  "additionalProperties": {
                    "properties": {
                      "confidence": {
                        "type": "number"
                      },
                      "correlation_source": {
                        "type": "string"
                      },
                      "historical_correlation": {
                        "type": "number"
                      },
                      "lag_minutes": {
                        "type": "integer"
                      },
                      "predicted_move_pct": {
                        "type": "number"
                      }
                    },
                    "type": "object"
                  },
                  "type": "object"
                },
                "recommended_action": {
                  "type": "string"
                },
                "timestamp": {
                  "type": "string"
                },
                "valid_for_seconds": {
                  "type": "integer"
                }
              },
              "type": "object"
            }
          },
          "type": "object"
        }
      },
      "type": "object"
    },
    "version": "1.0.0"
  }
}

curl "https://apexrunner.ai/signals/cross-asset-contagion"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://apexrunner.ai/signals/cross-asset-contagion");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://apexrunner.ai/signals/cross-asset-contagion")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header