# APEX Runner Live ATR Sizing Signal

> APEX Runner Live ATR Sizing Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-13).

Returns a live Average True Range (ATR)-based position sizing signal for crypto trading decisions

## Facts

- Endpoint: GET https://apexrunner.ai/signals/live-atr-sizing
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-runner-live-atr-sizing-signal-a7047c3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2hBsJIAjOyjMQwZf6AIRH

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-live-atr-sizing-signal-a7047c3b
```

Example prompt: What's the live ATR-based position sizing signal from APEX Runner right now so I know how large to size my next crypto trade given current market volatility?

## When to prefer this

Use this endpoint when you need a real-time, volatility-aware position sizing recommendation derived from ATR for crypto trading. Prefer this over static position sizing when market volatility is a key risk factor, or when running an automated trading agent that needs to dynamically adjust trade sizes on Kraken, Coinbase, or Hyperliquid.

## Known failure modes

- Payment not received or invalid x402 payment header returns 402 Payment Required
- Market data temporarily unavailable returns 503 or error signal
- Invalid trading pair or parameter returns 400 Bad Request
- Stale or delayed market data may reduce signal accuracy

## How this service works

APEX Runner: Live Atr Sizing Signal

## Output

A live ATR (Average True Range) position sizing signal indicating the recommended trade size or volatility-adjusted sizing factor based on current crypto market conditions, enabling the agent to calibrate position exposure appropriately.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coins_tracked": 5,
  "atr_grid_params": {
   "BTC": {
    "atr": 1247.5,
    "vol_regime": "NORMAL",
    "grid_spacing_pct": 0.5
   },
   "ETH": {
    "atr": 52.3
   }
  },
  "market_volatility": "MODERATE"
 },
 "atr_source": "string — data provenance: APEX live execution data",
 "coins_tracked": "integer — number of coins with live ATR data",
 "atr_grid_params": "object — keyed by coin (BTC/ETH/SOL/AVAX/LINK), each with atr (USD), atr_pct, grid_spacing_pct, recommended_size_usd, levels, vol_regime",
 "market_volatility": "string — HIGH / MODERATE / LOW based on average grid spacing"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-runner-live-atr-sizing-signal-a7047c3b/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)