# Signal Engine Arena EMA-5 Breakout Strategy Signal

> Signal Engine Arena EMA-5 Breakout Strategy Signal is a paid API for AI agents from signal-engine-production-d88d.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15, last successful call 2026-06-02).

Returns a real-time trading signal (long/short/neutral) with score, take-profit, stop-loss, and hold time for the EMA-5 Breakout strategy on a given crypto symbol

## Facts

- Endpoint: GET https://signal-engine-production-d88d.up.railway.app/v1/arena/ema_5_breakout/BTC
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Last successful call: 2026-06-02
- Success rate: 100% of calls made through Zero
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-1f449e16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T2CaJbtRaO35xNlLFyOta

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 signal-engine-arena-ema-5-breakout-strategy-signal-1f449e16
```

Example prompt: What's the current EMA-5 breakout signal for BTC — should I go long or short, and what stop-loss and take-profit percentages does the strategy recommend right now?

## When to prefer this

Use this endpoint when you need a real-time, pre-computed technical trading signal specifically from the EMA-5 Breakout strategy with explicit risk management parameters (TP/SL) and hold time. Prefer this over generic price feeds when you need actionable trade direction with structured risk guidance for short-term crypto positions.

## Known failure modes

- Unsupported symbol returns 404 or error payload
- Strategy ID not found returns error
- Service unavailable on Railway deployment returns 503
- Payment not completed (x402) returns 402 Payment Required
- Stale or missing market data may produce low-confidence or null signal

## How this service works

Individual arena strategy signal

## Output

A JSON object containing: signal direction (e.g. 'long' or 'short'), a confidence score (0–1), stop-loss percentage (sl_pct), take-profit percentage (tp_pct), recommended hold time in seconds, a human-readable reasoning string, and strategy metadata (id and name).

## Example request

```json
{
 "symbol": "BTC"
}
```

## Request schema (JSON Schema)

```json
{
 "output": {
  "required": [
   "strategy_id",
   "symbol"
  ],
  "properties": {
   "score": {
    "type": "number",
    "maximum": 1,
    "minimum": 0
   },
   "reason": {
    "type": "string",
    "description": "Present when signal is null (e.g. no_signal, no_context)"
   },
   "signal": {
    "enum": [
     "long",
     "short"
    ],
    "type": "string",
    "nullable": true
   },
   "sl_pct": {
    "type": "number",
    "description": "Stop-loss percentage"
   },
   "symbol": {
    "type": "string"
   },
   "tp_pct": {
    "type": "number",
    "description": "Take-profit percentage"
   },
   "reasoning": {
    "type": "string"
   },
   "strategy_id": {
    "type": "string"
   },
   "hold_time_sec": {
    "type": "integer",
    "description": "Suggested hold time in seconds"
   },
   "strategy_name": {
    "type": "string"
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "score": 0.82,
  "signal": "long",
  "sl_pct": 0.008,
  "symbol": "BTC",
  "tp_pct": 0.015,
  "reasoning": "Bollinger band squeeze with volume expansion",
  "strategy_id": "vwap_reversion",
  "hold_time_sec": 300,
  "strategy_name": "VWAP Reversion"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-1f449e16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signal-engine-production-d88d.up.railway.app](https://www.zero.xyz/host/signal-engine-production-d88d.up.railway.app/llms.txt)