# x402-factory Energy Indexes — US ISO Region

> x402-factory Energy Indexes — US ISO Region is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns daily heating/cooling degree-days, normalized peak-load signal, and solar/wind generation indexes for a specified US ISO power region, with extreme-risk flags.

## Facts

- Endpoint: GET https://x402-factory.com/v1/energy/:region
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-energy-indexes-us-iso-region-c260ee57
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OSqOHLT0n6yACz_Gp_yiL

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 x402-factory-energy-indexes-us-iso-region-c260ee57
```

Example prompt: Can you pull the energy indexes for CAISO for the next 5 days — I need the heating and cooling degree-days, expected peak load signal, and the solar and wind generation indexes, plus any extreme risk flags?

## When to prefer this

Use this endpoint when you need structured, load-weighted energy weather metrics — specifically degree-days, peak load signals, or renewable generation indexes — for one of the seven major US ISO regions (CAISO, ERCOT, PJM, MISO, SPP, NYISO, ISONE). Prefer it over raw weather APIs when you need grid-relevant computed metrics rather than raw meteorological data, and over NOAA/EIA when you need normalized, per-region composite indexes with extreme-risk flags in a single call.

## Known failure modes

- Invalid region enum value — only CAISO, ERCOT, PJM, MISO, SPP, NYISO, ISONE are accepted; returns 400/422 error
- days parameter out of range (must be 1–7); returns validation error
- Payment failure — x402 payment of $0.05 USDC not processed; returns 402 Payment Required
- Upstream forecast data unavailable for the region; may return 503 or partial data
- Missing required region path parameter; returns 400 error

## How this service works

Degree-days, load signal, and renewables indexes for a US ISO region — Daily heating/cooling degree-days (°F-days), a normalized peak-load signal, and solar/wind generation indexes computed from load-weighted city forecasts for CAISO, ERCOT, PJM, MISO, SPP, NYISO, or ISONE, with extreme-risk flags.

## Output

An array of daily records for each requested day, each containing: date, heating degree-days (HDD in °F-days), cooling degree-days (CDD in °F-days), normalized expected peak load signal (0–1), solar generation index (0–1), wind generation index (0–1), and an array of extreme risk flag strings. Also includes a meta object with request context.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "region"
     ],
     "properties": {
      "region": {
       "enum": [
        "CAISO",
        "ERCOT",
        "PJM",
        "MISO",
        "SPP",
        "NYISO",
        "ISONE"
       ],
       "type": "string"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "days": {
       "type": "integer",
       "default": 3,
       "maximum": 7,
       "minimum": 1
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data",
      "meta"
     ],
     "properties": {
      "data": {
       "type": "object",
       "required": [
        "daily"
       ],
       "properties": {
        "daily": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "date",
           "hdd",
           "cdd",
           "expected_peak_load_signal",
           "solar_gen_index",
           "wind_gen_index",
           "extreme_risk_flags"
          ],
          "properties": {
           "cdd": {
            "type": "number"
           },
           "hdd": {
            "type": "number"
           },
           "date": {
            "type": "string"
           },
           "wind_gen_index": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           },
           "solar_gen_index": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           },
           "extreme_risk_flags": {
            "type": "array",
            "items": {
             "type": "string"
            }
           },
           "expected_peak_load_signal": {
            "type": "number",
            "maximum": 1,
            "minimum": 0
           }
          },
          "additionalProperties": false
         }
        }
       },
       "additionalProperties": false
      },
      "me
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-energy-indexes-us-iso-region-c260ee57/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-factory.com](https://www.zero.xyz/host/x402-factory.com/llms.txt)