Pre-flight threshold simulator — count how many assets would trigger at a proposed cutoff

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

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "asof_day": "",
          "signal_id": "",
          "threshold_key": "",
          "threshold_value": 0
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "asof_day": "2026-06-18",
          "current_threshold": 0.5,
          "estimated_trigger_pct": 11.62,
          "estimated_trigger_rate": 0.1162,
          "n_total": 198,
          "n_triggered": 23,
          "ok": true,
          "proposed_threshold": 0.6,
          "signal_id": "TR_MOMO_CONT_14D",
          "threshold_key": "t_thr"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "asof_day": {
                  "description": "Optional YYYY-MM-DD lookup day. Defaults to metrics.aligned_day_1d()",
                  "type": "string"
                },
                "signal_id": {
                  "description": "Atomic signal registry ID, uppercased server-side (e.g. TR_MOMO_CONT_14D, FLOW_ACCUM_NETUSD_7D, VOL_COMPRESSION_7v30)",
                  "type": "string"
                },
                "threshold_key": {
                  "description": "Parameter name to simulate (e.g. t_thr, z_thr). Used to fetch current_threshold from signals.signal_params for comparison",
                  "type": "string"
                },
                "threshold_value": {
                  "description": "Proposed cutoff value. Interpreted as z-score for most signals, t-score for TR_MOMO_* signals",
                  "type": "number"
                }
              },
              "required": [
                "signal_id",
                "threshold_key",
                "threshold_value"
              ]
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://cryptyx.ai/api/signals/simulate"
# -> 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/signals/simulate");
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/signals/simulate")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header