# Signal Engine Arena EMA-5 Breakout Strategy Signal (ETH)

> Signal Engine Arena EMA-5 Breakout Strategy Signal (ETH) 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 2026-10-15).

Returns a trading signal for the EMA-5 breakout strategy applied to ETH, indicating whether to buy, sell, or hold based on exponential moving average analysis.

## Facts

- Endpoint: GET https://signal-engine-production-d88d.up.railway.app/v1/arena/ema_5_breakout/ETH?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-eth-0804a74e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2vovL_g_c_BwLemYLs5vO

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-eth-0804a74e
```

Example prompt: What is the current EMA-5 breakout arena strategy signal for ETH — is it bullish, bearish, or neutral?

## When to prefer this

Use this endpoint when you need a fast, low-cost ($0.001 USDC) real-time trading signal specifically for the EMA-5 breakout strategy on ETH. Prefer this over general market data APIs when you want a pre-computed, strategy-specific directional signal rather than raw price data, and when operating within an x402 micropayment-enabled agent workflow.

## Known failure modes

- Invalid asset symbol returns 404 or error response
- Strategy identifier not found returns error
- Service temporarily unavailable on Railway deployment returns 503
- Payment failure (x402) blocks response if USDC not provided
- Rate limiting if called too frequently without payment

## How this service works

Individual arena strategy signal

## Output

A trading signal object for the ema_5_breakout strategy on ETH, likely including a directional signal (buy/sell/hold or bullish/bearish/neutral), the current EMA-5 value, and possibly a confidence or strength indicator derived from price action relative to the 5-period exponential moving average.

## Example request

```json
{
 "symbol": "ETH",
 "strategy_id": "ema_5_breakout"
}
```

## 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"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-eth-0804a74e/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)