BillingContext

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/BillingContext",
  "title": "BillingContext",
  "properties": {
    "plan_type": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Plan Type",
      "description": "Subscription tier"
    },
    "cost_source": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Cost Source",
      "description": "Cost source: 'quota' or 'credits'"
    },
    "customer_id": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Customer Id",
      "description": "Customer ID for billing records"
    }
  },
  "type": "object",
  "description": "Billing context for LLM request cost tracking."
}