# APEX Runner Execution Window Optimizer Signal

> APEX Runner Execution Window Optimizer Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-14).

Returns a real-time signal indicating whether current market conditions represent an optimal execution window for trading a given crypto asset, including component scores and recommended order type.

## Facts

- Endpoint: GET https://apexrunner.ai/signals/execution-window-optimizer
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-runner-execution-window-optimizer-signal-dcd11717
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sqHwEgd9QgHyforeUy-I1

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability apex-runner-execution-window-optimizer-signal-dcd11717
```

Example prompt: Check the APEX Runner execution window optimizer for BTC right now — is it a good time to execute a trade, and what order type should I use?

## When to prefer this

Use this endpoint when you need a real-time, multi-factor composite score for whether NOW is the right moment to execute a trade for a specific crypto asset. It is especially valuable when you need not just a market direction signal but an execution-timing signal — combining regime, sentiment, volatility, session, and fill velocity into a single actionable verdict with an explicit recommended order type.

## Known failure modes

- Unsupported coin value returns validation error
- Missing or malformed query parameters return 400-level error
- Signal may be stale if valid_for_seconds has elapsed since last call
- Service unavailable or 402 payment required if USDC payment not processed correctly

## How this service works

APEX Runner: Execution Window Optimizer Signal

## Output

Returns a JSON object containing: a window_score integer (0-100) rating execution conditions, a verdict string (e.g. 'EXECUTE' or 'WAIT'), a rationale explaining the signal, component sub-scores for market regime, fear/greed index, volatility (ATR%), time-of-day session, and fill velocity, a recommended_order_type, the next_optimal_window timestamp, and valid_for_seconds indicating signal freshness. Also includes APEX metadata like signal hash, evolution runs, and whether live capital is deployed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {
      "coin": {
       "enum": [
        "AVAX",
        "BTC",
        "ETH",
        "LINK",
        "SOL",
        "XRP"
       ],
       "type": "string",
       "default": "BTC"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "coin": {
       "type": "string"
      },
      "_apex": {
       "type": "object",
       "properties": {
        "signal": {
         "type": "string"
        },
        "source": {
         "type": "string"
        },
        "version": {
         "type": "string"
        },
        "instance": {
         "type": "string"
        },
        "verify_at": {
         "type": "string"
        },
        "signal_hash": {
         "type": "string"
        },
        "live_trading": {
         "type": "boolean"
        },
        "evolution_runs": {
         "type": "integer"
        },
        "live_capital_deployed": {
         "type": "boolean"
        },
        "trades_backing_signal": {
         "type": "integer"
        }
       }
      },
      "verdict": {
       "type": "string"
      },
      "rationale": {
       "type": "string"
      },
      "timestamp": {
       "type": "string"
      },
      "components": {
       "type": "object",
       "properties": {
        "regime": {
         "type": "object",
         "properties": {
          "score": {
           "type": "integer"
          },
          "regime": {
           "type": "string"
          }
         }
        },
        "fear_greed": {
         "type": "object",
         "properties": {
          "score": {
           "type": "integer"
          },
          "value": {
           "type": "integer"
          }
         }
        },
        "volatility": {
         "type": "object",
         "properties": {
          "score": {
           "type": "integer"
          },
          "atr_pct": {
           "type": "number"
          }
         }
        },
        "time_of_day": {
         "type": "object",
         "properties": {
          "score": {
           "type": "integer"
          },
          "session": {
           "type": "string"
          },
          "utc_hour": {
           "type": "integer"
          }
         }
        },
        "fill_velocity": {
     
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "reason": "string — plain-English explanation of window quality",
 "example": {
  "execute_now": true,
  "window_label": "GOOD",
  "volatility_regime": "LOW",
  "current_window_score": 78
 },
 "execute_now": "boolean — true when score >= 60",
 "window_label": "string — EXCELLENT / GOOD / FAIR / POOR based on score",
 "volatility_regime": "string — LOW / NORMAL / HIGH / EXTREME based on current ATR",
 "liquidity_condition": "string — DEEP / MODERATE / THIN based on order book depth",
 "next_optimal_window": "string — ISO8601 UTC timestamp or 'now' if current window is optimal",
 "current_window_score": "integer — execution quality score 0-100 (higher = better conditions)"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-runner-execution-window-optimizer-signal-dcd11717/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apexrunner.ai](https://www.zero.xyz/host/apexrunner.ai/llms.txt)