# Services from signal-engine-production-d88d.up.railway.app on Zero

> signal-engine-production-d88d.up.railway.app serves 18 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/signal-engine-production-d88d.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/signal-engine-production-d88d.up.railway.app/health.json

## Services

- [E2B Sandboxed Python Code Execution](https://www.zero.xyz/c/e2b-sandboxed-python-code-execution-3497de0e/llms.txt): $0.005/call via x402. Executes arbitrary Python code in a secure E2B sandbox and returns stdout, stderr, and error output
- [Signal Engine Tavily Web Search Gateway](https://www.zero.xyz/c/signal-engine-tavily-web-search-gateway-2ec3ca81/llms.txt): $0.012/call via x402. Performs AI-powered web searches via Tavily, returning ranked results with titles, URLs, and content snippets
- [Signal Engine RSI 7 Extremes Arena Strategy Signal](https://www.zero.xyz/c/signal-engine-rsi-7-extremes-arena-strategy-signal-1dbe9878/llms.txt): $0.001/call via x402. Returns a live RSI-based trading signal (long/short/neutral) with score, take-profit, stop-loss, and hold time for a given crypto symbol
- [Signal Engine RSI Reversion Swing Strategy Signal](https://www.zero.xyz/c/signal-engine-rsi-reversion-swing-strategy-signal-7da8f516/llms.txt): $0.001/call via x402. Returns a live trading signal for the RSI Reversion Swing strategy on a given crypto symbol, including direction, score, take-profit, stop-loss, and reasoning.
- [Signal Engine RSI 7 Extremes Strategy – DOGE](https://www.zero.xyz/c/signal-engine-rsi-7-extremes-strategy-doge-18844361/llms.txt): $0.001/call via x402. Returns a live RSI-7-extremes trading signal (long/short, score, take-profit, stop-loss, hold time) for the DOGE/USD pair
- [Signal Engine VWAP Reversion BTC Arena Signal](https://www.zero.xyz/c/signal-engine-vwap-reversion-btc-arena-signal-f1d6ac81/llms.txt): $0.001/call via x402. Returns a VWAP reversion trading signal for BTC including directional call, confidence score, stop-loss, take-profit, and hold time
- [Signal Engine RSI 7 Extremes Strategy Signal (ETH)](https://www.zero.xyz/c/signal-engine-rsi-7-extremes-strategy-signal-eth-5653f351/llms.txt): $0.001/call via x402. Returns a real-time RSI-7 extremes trading signal for ETH including direction (long/short), score, take-profit %, stop-loss %, and hold time
- [RSI Reversion Swing Signal for BTC](https://www.zero.xyz/c/rsi-reversion-swing-signal-for-btc-84d3a097/llms.txt): $0.001/call via x402. Returns a trading signal (long/short/neutral) with score, take-profit, stop-loss, and reasoning for the RSI Reversion Swing strategy on BTC
- [Signal Engine VWAP Reversion Arena Signal – SOL](https://www.zero.xyz/c/signal-engine-vwap-reversion-arena-signal-sol-f6f5422f/llms.txt): $0.001/call via x402. Returns a real-time VWAP reversion trading signal for SOL, including direction, confidence score, take-profit/stop-loss percentages, and recommended hold time.
- [Signal Engine Arena EMA-5 Breakout Strategy Signal](https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-1f449e16/llms.txt): $0.001/call via x402. 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
- [Signal Engine RSI Reversion Swing – DOGE](https://www.zero.xyz/c/signal-engine-rsi-reversion-swing-doge-d5721272/llms.txt): $0.001/call via x402. Returns a real-time RSI reversion swing trading signal for DOGE including directional call, take-profit, stop-loss, and confidence score
- [Signal Engine Arena EMA-5 Breakout Strategy Signal for DOGE](https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-for-doge-cd807496/llms.txt): $0.001/call via x402. Returns a live trading signal (long/short/neutral) with score, take-profit, stop-loss, and hold time for the EMA-5 Breakout strategy applied to DOGE
- [Signal Engine RSI Reversion Swing – SOL Arena Signal](https://www.zero.xyz/c/signal-engine-rsi-reversion-swing-sol-arena-signal-7f51730e/llms.txt): $0.001/call via x402. Returns a real-time RSI reversion swing trading signal (long/short, score, take-profit, stop-loss, hold time) for the SOL token
- [Signal Engine VWAP Reversion Arena Strategy Signal – ETH](https://www.zero.xyz/c/signal-engine-vwap-reversion-arena-strategy-signal-eth-8837ac03/llms.txt): $0.001/call via x402. Returns a VWAP reversion trading strategy signal for the ETH asset in the arena context
- [Signal Engine RSI-7 Extremes BTC Arena Strategy Signal](https://www.zero.xyz/c/signal-engine-rsi-7-extremes-btc-arena-strategy-signal-913d11f8/llms.txt): $0.001/call via x402. Returns the RSI-7 extremes trading strategy signal for Bitcoin (BTC) from the arena signal engine
- [Signal Engine Arena EMA-5 Breakout Strategy Signal (ETH)](https://www.zero.xyz/c/signal-engine-arena-ema-5-breakout-strategy-signal-eth-0804a74e/llms.txt): $0.001/call via x402. 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.
- [Signal Engine VWAP Reversion Arena Signal – DOGE](https://www.zero.xyz/c/signal-engine-vwap-reversion-arena-signal-doge-f6a96275/llms.txt): $0.001/call via x402. Returns a VWAP reversion trading signal for DOGE from the arena strategy engine
- [Signal Engine EMA 5 Breakout Arena Strategy Signal – SOL](https://www.zero.xyz/c/signal-engine-ema-5-breakout-arena-strategy-signal-sol-d9c287aa/llms.txt): $0.001/call via x402. Returns the current EMA 5 breakout trading strategy signal for SOL (Solana) from the Signal Engine arena

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)