Per-asset triggered signal ledger over 7-365 days, A/B grades only

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0cD2c9724F185a029101b4AEACf3F114415c394f",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "days": 0,
          "symbol": ""
        },
        "type": "http"
      },
      "output": {
        "example": {
          "days": 90,
          "events": [
            {
              "asof_day": "2026-04-25",
              "class": "TR",
              "close_px": 67420.15,
              "confidence": 0.73,
              "direction": "long",
              "fwd_return_7d": 0.0412,
              "grade": "A",
              "horizon": "14d",
              "name": "Trend Momentum Continuation 14D",
              "signal_id": "TR_MOMO_CONT_14D",
              "z": 1.84
            },
            {
              "asof_day": "2026-05-02",
              "class": "VOL",
              "close_px": 69815.3,
              "confidence": 0.61,
              "direction": "neutral",
              "fwd_return_7d": 0.0187,
              "grade": "B",
              "horizon": "7d",
              "name": "Volatility Compression 7v30",
              "signal_id": "VOL_COMPRESSION_7v30",
              "z": -0.42
            },
            {
              "asof_day": "2026-05-18",
              "class": "FLOW",
              "close_px": 71203.88,
              "confidence": 0.68,
              "direction": "short",
              "fwd_return_7d": -0.0234,
              "grade": "A",
              "horizon": "7d",
              "name": "VWAP Deviation 7D",
              "signal_id": "FLOW_VWAP_DEV_7D",
              "z": -2.11
            }
          ],
          "meta": {
            "ic_context": "cross_sectional"
          },
          "ok": true,
          "symbol": "BTC"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "days": {
                  "description": "Lookback window in days, 7-365, default 90.",
                  "type": "number"
                },
                "symbol": {
                  "description": "Asset ticker (uppercased, trimmed). Required.",
                  "type": "string"
                }
              },
              "required": [
                "symbol"
              ],
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

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

const res = await fetch("https://cryptyx.ai/api/asset/signal-events");
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://cryptyx.ai/api/asset/signal-events")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header