# Get Lithium market index data

Retrieve price index data for the Lithium market.
Returns index values with summary statistics and time series data.

Endpoint: POST /lithium/index
Version: 1.0.0
Security: bearerAuth, api_key

## Request fields (application/json):

  - `filters` (object)

  - `filters.dateFrom` (string)
    Start date for index series (YYYY-MM-DD)
    Example: "2024-01-01"

  - `filters.dateTo` (string)
    End date for index series (YYYY-MM-DD)
    Example: "2024-12-31"

  - `filters.products` (string)
    Filter by product name
    Example: "Lithium"

## Response 200 fields (application/json):

  - `$metadata` (object)

  - `$metadata.market` (string)
    Market name

  - `data` (array)

  - `data.order` (integer)
    Display order for the index

  - `data.code` (string)
    Index code identifier
    Example: "IDXANODE001"

  - `data.product` (object)

  - `data.product.id` (string)

  - `data.product.name` (string)

  - `data.frequency` (object)

  - `data.frequency.shortName` (string)

  - `data.summary` (object,null)

  - `data.summary.latestPublication` (object,null)

  - `data.summary.latestPublication.date` (string)

  - `data.summary.latestPublication.value` (number)

  - `data.summary.previousPublication` (object,null)

  - `data.summary.changes` (object,null)

  - `data.summary.changes.unit` (string)
    Example: "Index"

  - `data.summary.changes.latest` (number,null)

  - `data.summary.changes.daily` (number,null)

  - `data.summary.changes.weekly` (number,null)

  - `data.summary.changes.biWeekly` (number,null)

  - `data.summary.changes.monthly` (number,null)

  - `data.summary.changes.quarterly` (number,null)

  - `data.summary.changes.sixMonths` (number,null)

  - `data.summary.changes.yearToDate` (number,null)

  - `data.summary.changes.yearOnYear` (number,null)

  - `data.series` (array,null)

## Response 400 fields (application/json):

  - `errors` (array)

  - `errors.location` (string)
    Example: "body"

  - `errors.code` (string)
    Example: "invalid_type"

  - `errors.property` (string)
    Example: "filters.dateFrom"

  - `errors.message` (string)
    Example: "Expected string, received array"

## Response 401 fields (application/json):

  - `code` (string)
    Example: "AUTH-0001"

  - `message` (string)
    Example: "Token expired"

## Response 403 fields (application/json):

  - `code` (string)
    Example: "AUTH-0010"

  - `message` (string)
    Example: "Forbidden"