Token Index API - Silicon Data

Note: Access to the Token Index API is gated per subscription. Your subscription may restrict the available token, index_version, and queryable date range.

POST /api/token-index/index

Get daily LLM token index data for a requested token, index version, and date range. If no date range is provided, data for the server current date is used by default. Missing dates are returned as "-1".

Authorization

This endpoint requires a valid user token or application token. 🔒OAuth2: OAuth2PasswordBearer
Flow type: password
Token URL: token

Request Body

The request body must be in application/json format.

Field	Type	Required	Description	Constraints
`token`	string	YES	LLM token index type (case-insensitive). Currently supported: `expenditure`.	1 to 60 characters
`index_version`	string	NO	Token index version. Defaults to `v1` (case-insensitive).	1 to 60 characters
`starting_date`	string or null	NO	The start date for the query in `YYYY-MM-DD` format. Defaults to the server current date.	On or after `2025-12-01`, unless deployment config overrides it; not in the future
`ending_date`	string or null	NO	The end date for the query in `YYYY-MM-DD` format. Defaults to the server current date.	Not in the future

starting_date must be less than or equal to ending_date.

Request Example

{
  "token": "expenditure",
  "index_version": "v1",
  "starting_date": "2026-04-20",
  "ending_date": "2026-04-26"
}

Responses

200: Successful Response Index values are returned as strings formatted to four decimal places. index_name is taken from the underlying data and may be null if no data exists for the range.

{
  "meta": {
    "code": 0,
    "url": "/api/token-index/index",
    "message": "OK",
    "timestamp": 1777545600
  },
  "data": {
    "token": "expenditure",
    "index_name": "Token Expenditure Index",
    "index_version": "v1",
    "starting_date": "2026-04-20",
    "ending_date": "2026-04-26",
    "indexes": {
      "2026-04-20": "100.0000",
      "2026-04-21": "101.2345",
      "2026-04-22": "-1",
      "2026-04-23": "103.5678",
      "2026-04-24": "104.0000",
      "2026-04-25": "-1",
      "2026-04-26": "105.4321"
    }
  }
}

422: Validation Error

{
  "meta": {
    "code": 422,
    "url": "/api/token-index/index",
    "message": "Parameter value error: ...",
    "timestamp": 1777545600
  },
  "data": {}
}

10008: Date range error

{
  "meta": {
    "code": 10008,
    "url": "/api/token-index/index",
    "message": "starting date should be less than or equal to ending date",
    "timestamp": 1777545600,
    "args": [],
    "kwargs": {}
  },
  "data": {}
}

34004: Product permission is missing

{
  "meta": {
    "code": 34004,
    "url": "/api/token-index/index",
    "message": "You don't have permission to access the current product...",
    "timestamp": 1777545600
  },
  "data": {}
}