# Federal Register Energy Efficiency Regulatory Changes Feed

> Federal Register Energy Efficiency Regulatory Changes Feed is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns Federal Register final and proposed rules for appliance and energy equipment efficiency standards since a given timestamp, each scored 1-10 for compliance impact with effective dates and source links.

## Facts

- Endpoint: GET https://oracles-production.up.railway.app/v1/reg-energy-efficiency/changes
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/federal-register-energy-efficiency-regulatory-changes-feed-c61ca645
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S0ZJlLT0-upuFejIXS657

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 federal-register-energy-efficiency-regulatory-changes-feed-c61ca645
```

Example prompt: Pull all Federal Register energy efficiency rule changes since 2025-01-01T00:00:00Z, limit to 50 results, and only show me ones with a compliance significance score of at least 7.

## When to prefer this

Use this endpoint when you need to monitor or audit changes to US federal energy efficiency regulations for appliances and equipment, especially when compliance impact scoring and direct primary-source links to the Federal Register are required. Prefer it over general news or search APIs when you need structured, machine-readable regulatory data with significance rankings and effective dates.

## Known failure modes

- Invalid ISO-8601 timestamp in 'since' returns a 400 error
- 'min_significance' outside 1-10 range returns a 400 validation error
- 'limit' outside 1-500 range returns a 400 validation error
- Payment not included or insufficient USDC returns 402
- No matching rules in the time window returns count:0 with empty changes array
- Federal Register upstream unavailable may return 503 or stale data

## How this service works

Federal Register final & proposed rules affecting appliance & equipment energy standards (Energy Department) since a timestamp — covering energy conservation, energy efficiency, appliance, test procedure, eere — each scored 1-10 for compliance impact, with effective dates and primary-source links.

## Output

A JSON object containing a count of matching changes and an array of regulatory change records, each with title, type, summary, significance score (1-10), effective date, detected-at timestamp, entity ID, and a primary-source Federal Register URL for verification.

## 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"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 500,
       "minimum": 1
      },
      "since": {
       "type": "string",
       "format": "date-time",
       "description": "Only changes detected after this ISO-8601 instant"
      },
      "min_significance": {
       "type": "integer",
       "maximum": 10,
       "minimum": 1,
       "description": "Keep only changes scored at least this"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "count": {
       "type": "integer"
      },
      "source": {
       "type": "string"
      },
      "changes": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "type": {
          "type": "string"
         },
         "title": {
          "type": "string"
         },
         "detail": {
          "type": "object"
         },
         "summary": {
          "type": "string"
         },
         "entityId": {
          "type": "string"
         },
         "sourceUrl": {
          "type": [
           "string",
           "null"
          ],
          "description": "Primary-source link for verification"
         },
         "detectedAt": {
          "type": "string",
          "format": "date-time"
         },
         "significance": {
          "type": "integer",
          "maximum": 10,
          "minimum": 1
         },
         "effectiveDate": {
          "type": [
           "string",
           "null"
          ]
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/federal-register-energy-efficiency-regulatory-changes-feed-c61ca645/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from oracles-production.up.railway.app](https://www.zero.xyz/host/oracles-production.up.railway.app/llms.txt)