Oil Price API Electricity Prices API

openapi: 3.2.0
info:
  title: Oil Price API V1 Electricity Prices API
  version: v1
  description: 'Source-aware oil and energy data API. Check each endpoint''s source timestamp,

    coverage, and freshness fields before using a response in a time-sensitive workflow. ## Authentication


    API-key endpoints use `Authorization: Token YOUR_API_KEY`. Operations that do

    not require an API key explicitly declare an empty security requirement. `/v1/demo/prices` is keyless. ## Rate Limiting


    - Free tier: 50 requests per day

    - Paid tiers have plan-specific monthly quotas. - `402` means the allowance is exhausted: a Free or post-trial caller

    must upgrade, and a paid plan has used its monthly allowance (the body

    carries `MONTHLY_QUOTA_EXCEEDED` and reset metadata, so do not retry before

    the reset). `429` means an active-trial allowance or a rolling rate limit

    (for example the hourly safety limit) is exceeded; retry `429` and transient

    `5xx` responses with bounded backoff. - Website login and signup (`POST /sessions` and `POST /users`) also enforce

    authentication-attempt limits independently of API plan quotas: 3 attempts

    per normalized email address in 5 minutes, and 3 attempts per minute per

    verified visitor IP. Requests without a verified proxy identity retain

    the existing 20 requests/minute IP ceiling. A `429` on these routes means

    wait for `Retry-After` before retrying; upgrading a plan does not remove

    authentication-attempt limits. Futures curves are never refused because a market is closed or a session has

    just reopened. The last available data is served with `metadata.freshness_status`,

    `metadata.stale`, `metadata.latest_data_at` and `metadata.stale_by_minutes`:

    `outside_market_hours` while the venue is closed (weekend, daily break,

    holiday); `awaiting_first_print` for the first 30 minutes of a new session

    while only a valid prior close exists; `degraded` when the market is open and

    the source is behind. None of these is a fresh trade; source timestamps remain

    unchanged. Data older than the 96-hour serving bound is refused with 503. Gasoil reports `metadata.freshness_status: no_recent_trades` when the

    benchmark contract has not traded within 30 minutes but our collector confirmed

    the quote within that window and the curve printed within 90 minutes. The last

    trade is served with its true `latest_data_at` and `stale_by_minutes`, plus

    `source_checked_at` and `curve_latest_trade_at`. Paid monthly-cap responses include `retry_guidance`: immediate retries cannot

    restore quota. When a representative sample supports it, `batching_opportunity`

    describes an estimated lower request rate; batching does not restore an already

    exhausted allowance. It may replace an unnecessary upgrade recommendation. ## Continuous futures coverage


    On `/v1/futures/continuous/brent`, `/v1/futures/continuous/wti` and their

    `/historical` routes, `metadata.history_available_from` is the earliest

    stored public continuous futures source date, falling back to collection

    date for older imports without a source timestamp. It is a date string or

    null when no public observations exist. Coverage metadata is cached for up

    to one hour and does not promise observations or volume on every later date. It describes the archive independently of the request''s date range; account

    depth limits remain in `metadata.history_window` on historical responses. Latest-response `metadata.total_historical_records` counts stored public

    snapshots, including revisions, rather than distinct source dates. Latest

    quotes and their prior-day comparisons exclude private organization rows

    and other price types. Repeated source timestamps select the later collected

    revision; the oldest metadata/response cache formats are no longer used. ## Spread and indicator query parameters


    Spread and indicator endpoints reject unrecognized query parameter names with

    HTTP 400 and `error.code: UNKNOWN_PARAMETERS`, after authentication and access

    checks. The error includes `unrecognized_parameters`, `allowed_parameters`,

    and a `suggestions` map for recognized date-name mistakes; values are not

    echoed.'
  contact:
    name: Oil Price API Support
    email: support@oilpriceapi.com
    url: https://oilpriceapi.com
  license:
    name: Commercial License
    url: https://oilpriceapi.com/terms
servers:
- url: https://api.oilpriceapi.com
  description: Production server
tags:
- name: Electricity Prices
  description: Electricity price datasets.
paths:
  /v1/electricity:
    get:
      summary: Get retail electricity prices by state and sector
      operationId: getV1Electricity
      tags:
      - Electricity Prices
      description: 'Retrieve US retail electricity prices in cents per kilowatt-hour by state and customer sector.

        Data sourced from EIA (Energy Information Administration, Forms EIA-826/861/861M) with monthly updates.

        Covers all 50 states plus DC and the US national average.


        **FREE TIER** - No additional cost'
      parameters:
      - name: state
        in: query
        required: true
        description: Two-letter US state code (e.g., CA, TX, NY), DC, or US for the national average
        schema:
          type: string
          example: CA
      - name: sector
        in: query
        required: false
        description: Customer sector (default residential)
        schema:
          type: string
          enum:
          - residential
          - commercial
          - industrial
          - all
          example: residential
      security:
      - ApiKeyAuth: []
      responses:
        '200':
          description: Retail electricity price data
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: success
                  data:
                    type: object
                    properties:
                      price:
                        type:
                        - number
                        - 'null'
                        format: float
                        example: 35.25
                        description: Retail electricity price in cents per kilowatt-hour
                      currency:
                        type: string
                        example: USD
                      unit:
                        type: string
                        example: cents_per_kwh
                      period:
                        type:
                        - string
                        - 'null'
                        example: 2026-04
                        description: EIA data month (YYYY-MM)
                      state:
                        type: string
                        example: CA
                      sector:
                        type: string
                        enum:
                        - residential
                        - commercial
                        - industrial
                        - all
                        example: residential
                      source:
                        type: string
                        example: EIA
                      updated_at:
                        type:
                        - string
                        - 'null'
                        format: date-time
                      cached:
                        type: boolean
                        example: true
                      error:
                        type:
                        - string
                        - 'null'
        '400':
          description: Missing or invalid state/sector parameter
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: error
                  message:
                    type: string
                    example: 'Missing required parameter: state (two-letter US state code, DC, or US)'
        '401':
          description: Unauthorized - Invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  responses:
    InternalServerError:
      description: Unexpected server error. Retry transient failures with bounded backoff and retain the request ID when contacting support.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              description: Machine-readable error code (e.g. UNAUTHORIZED, NOT_FOUND, INVALID_PARAMETER).
              example: UNAUTHORIZED
            message:
              type: string
              example: 'Missing or invalid API key. Include header: Authorization: Token YOUR_API_KEY'
            status:
              type: integer
              example: 401
            request_id:
              type: string
              example: fa0e389f-ca86-47b2-b167-2b4645a2fb8b
            docs:
              type: string
              example: https://docs.oilpriceapi.com#UNAUTHORIZED
            signup_url:
              type:
              - string
              - 'null'
              example: https://www.oilpriceapi.com/auth/signup
            demo_endpoint:
              type:
              - string
              - 'null'
              example: /v1/demo/prices
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'API key as: Authorization: Token YOUR_API_KEY'
externalDocs:
  description: OilPriceAPI developer documentation
  url: https://docs.oilpriceapi.com