# SparkPulse – Wholesale US Electricity Market Price & Volatility Signal

> SparkPulse – Wholesale US Electricity Market Price & Volatility Signal is a paid API for AI agents from spark.lonestaroracle.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns real-time and day-ahead wholesale US electricity prices ($/MWh), volatility metrics, 24h range, negative-price interval counts, and a CHEAP/NORMAL/ELEVATED/SCARCE/SPIKING signal per market hub

## Facts

- Endpoint: GET https://spark.lonestaroracle.xyz/power
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sparkpulse-wholesale-us-electricity-market-price-volatility-signal-38937a69
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2GXwZvPV5y_F7kcHgWUYX

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 sparkpulse-wholesale-us-electricity-market-price-volatility-signal-38937a69
```

Example prompt: What's the current wholesale electricity price and volatility signal right now — is power cheap, scarce, or spiking, and what's the best battery arbitrage spread available?

## When to prefer this

Choose SparkPulse when you need the actual price of electrons in the US wholesale market — not grid mix, not demand forecast, not renewable percentage. It is the counterpart to compute-cost data for reasoning about compute-power economics, battery dispatch profitability, data center siting, or energy trading decisions. Prefer it over generic energy APIs when you need real-time $/MWh, the CHEAP-to-SPIKING signal, and battery arbitrage metrics in a single low-cost call.

## Known failure modes

- Payment required (402) if x402 USDC payment on Base not included
- Upstream ISO data feed delay or outage returns stale or unavailable data
- Non-CAISO markets may return partial or unavailable coverage during rollout phase
- Network timeout if ISO source is slow to respond

## How this service works

Wholesale US electricity-market price + volatility signal (no params)

## Output

A JSON object containing per-market-hub wholesale electricity data including: real-time price ($/MWh), day-ahead price ($/MWh), a categorical price signal (CHEAP/NORMAL/ELEVATED/SCARCE/SPIKING), day-ahead-to-real-time spread, 24h window high/low, count of negative 5-min price intervals, volatility score, and a battery arbitrage summary (best market, intraday spread, negative-interval frequency), plus a human-readable summary string. Currently covers CAISO (SP15) live with ERCOT/PJM/MISO rolling out.

## Request schema (JSON Schema)

```json
{
 "name": "SparkPulse",
 "tags": [
  "power",
  "electricity",
  "energy",
  "markets",
  "grid"
 ],
 "type": "object",
 "version": "1.0.0",
 "category": "energy",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "signal": "SCARCE",
     "markets": {
      "CAISO": {
       "SP15": {
        "signal": "SCARCE",
        "da_price": 61,
        "rt_price": 182.4,
        "volatility": 74.2,
        "window_low": -8,
        "window_high": 340.1,
        "da_rt_spread": 121.4,
        "intraday_spread": 348.1,
        "negative_intervals": 12
       }
      }
     },
     "summary": "US West (CAISO) power scarce: SP15 real-time $182/MWh (day-ahead $61), 24h range -$8 to $340, 12 negative 5-min intervals.",
     "coverage": "CAISO (California) live; ERCOT/PJM/MISO rolling out",
     "battery_arbitrage": {
      "best_market": "CAISO-SP15",
      "intraday_spread_mwh": 348.1,
      "negative_intervals_24h": 12
     }
    }
   }
  }
 },
 "description": "Wholesale US electricity-market prices made agent-callable. One x402 call returns the real-time and day-ahead wholesale power price ($/MWh) by market hub, the day-ahead-vs-real-time spread, the 24-hour high/low range, the count of negative-price intervals, price volatility, and a CHEAP / NORMAL / ELEVATED / SCARCE / SPIKING signal — plus a battery-arbitrage read (best intraday spread, negative-price frequency). This is the price of the ELECTRON: the missing counterpart to ComputePulse (price of compute) and distinct from GridPulse (grid demand/mix/stress). The read a data-center-siting, battery-dispatch, energy-trading, or compute-cost agent needs on what power actually costs right now and how volatile it is. Pair it with ComputePulse to reason about the compute-power spread. $0.05 in USDC on Base via x402. Source: US ISO public data (CAISO OASIS live; ERCOT / PJM / MISO rolling out). Real-world-economy data, no crypto-dashboard equivalent."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sparkpulse-wholesale-us-electricity-market-price-volatility-signal-38937a69/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from spark.lonestaroracle.xyz](https://www.zero.xyz/host/spark.lonestaroracle.xyz/llms.txt)