UsageBreakdownRow

One group of a UsageBreakdown.

Kind: an object, used in responses.

Fields

Every field is present in a response; empty ones are null.

Field	Type	Description
key	string | null	The value to pass to the dimension’s filter to drill into this row; null means “no value” (~none).
label	string | null	A display name where the key is an id (definition, root, trigger) or a namespace; otherwise null.
detail	string | null	The kind of run for definition, version and root rows; what started the runs for trigger rows.
totals	UsageTotals	The group’s usage.

Example

{
  "key": "...",
  "label": "...",
  "detail": "...",
  "totals": {
    "runs": 0,
    "runtimeMs": 0,
    "executionMs": 0,
    "steps": 0,
    "stepRuntimeMs": 0,
    "toolCalls": 0,
    "tokens": {
      "input": 0,
      "output": 0,
      "cacheRead": 0,
      "cacheWrite": 0,
      "reasoning": 0,
      "total": 0
    },
    "webSearches": 0,
    "webPages": 0,
    "webDownloads": 0,
    "imageDescriptions": 0,
    "webCredits": 0,
    "webBytes": 0
  }
}

Where it’s used

• Inside UsageBreakdown