# APEX Runner: Vol Tick Signal

> APEX Runner: Vol Tick Signal is a paid API for AI agents from apexrunner.ai, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-15).

Returns a real-time volatility tick trading signal with quantitative metrics (a, b, e, s values) and metadata about signal quality and live trading status.

## Facts

- Endpoint: GET https://apexrunner.ai/signals/vol-tick
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apex-runner-vol-tick-signal-14238689
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4lzbXlMCIthThFGyZTh9D

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-vol-tick-signal-14238689
```

Example prompt: Pull the latest APEX Runner vol tick signal so I can see the current volatility reading, whether it's backed by live trades, and how many evolution runs are behind it.

## When to prefer this

Use this endpoint when you need a real-time, quantitatively-backed volatility tick signal with provenance metadata (hash, live trading status, evolution runs). Prefer it over generic volatility indicators when you need cryptographic signal verification and want to know if live capital and real trades are backing the signal — not just a raw data feed.

## Known failure modes

- 402 Payment Required if x402 payment header is missing or invalid
- Stale signal if the endpoint is temporarily lagging market data
- Empty or null signal values if no sufficient trade history backs the current tick
- Network timeout if the signal computation takes too long
- Invalid/missing signal hash if signal integrity cannot be confirmed

## How this service works

APEX Runner: Vol Tick Signal

## Output

Returns a JSON object containing quantitative signal values (a, b, e, s) and a Unix timestamp (t), plus an _apex metadata block with: signal name, source, version, instance ID, verification URL, signal hash, live trading flag, number of evolution runs, live capital deployed flag, and number of trades backing the signal.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "a": {
       "type": "number"
      },
      "b": {
       "type": "number"
      },
      "e": {
       "type": "number"
      },
      "s": {
       "type": "number"
      },
      "t": {
       "type": "integer"
      },
      "_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"
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apex-runner-vol-tick-signal-14238689/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)