# aiUsage

query · in the family [Billing and the wallet](/reference/billing-and-the-wallet/)

## What it does

Your group’s AI usage by day — calls, tokens, and spend, with a per-surface breakdown.

YOUR group's AI usage by UTC day: composed off the daily rollup rows the meter grows with EVERY metered call (calls · tokens · nano-exact spend + the per-surface split), ≤ 92 bounded point-reads — never a scan. SELF-group BY CONSTRUCTION (no target arg exists — the tokenEntries stance); days defaults 30, clamps 1..92; only days WITH usage answer (an empty window is the honest answer). costUsd values are decimal strings (the money-string law). Requires authentication.

## What happens

A read over the running usage counters the platform keeps for every AI call; money shows in exact USD. Only days with usage appear.

## Who may call it

Capability area: **Billing and the wallet** — Your platform bill, token purchases and the usage and cost reads.

- Owner
- Manager
- Associate Manager
- An API key whose scope allows `api:aiUsage`

## Arguments

| Name | Type | Required | Notes |
| --- | --- | --- | --- |
| `days` | [Int](/types/#scalars) | no | No further notes. |

## Returns

[AiUsageWindow](/types/AiUsageWindow/) `AiUsageWindow!` — YOUR group's AI-usage window: the days WITH usage, newest first, + the window totals.

## Example request

```graphql
query ExampleAiUsage($days: Int) {
  aiUsage(days: $days) {
    totalCalls
    totalTokensInput
    totalTokensOutput
    totalCostUsd
  }
}
```

Variables:

```json
{
  "days": 1
}
```

## Example response

```json
{
  "data": {
    "aiUsage": {
      "totalCalls": 1,
      "totalTokensInput": 1,
      "totalTokensOutput": 1,
      "totalCostUsd": "<total cost usd>"
    }
  },
  "extensions": {
    "at": {
      "callId": "01EXAMPLE-CALL-ID",
      "version": {
        "requested": null,
        "serviced": {
          "name": "genesis",
          "number": 0
        }
      }
    }
  }
}
```

## Errors this call can answer

- `VALIDATION/INVALID` — Something in the request is not valid. ([VALIDATION](/errors/VALIDATION/))
- `AUTHN/REQUIRED` — Sign in to do this. ([AUTHN](/errors/AUTHN/))
- `AUTHZ/FORBIDDEN` — Your role does not allow this action. ([AUTHZ](/errors/AUTHZ/))
- `RATE_LIMIT/THROTTLED` — Too many requests in a short time. ([RATE_LIMIT](/errors/RATE_LIMIT/))

## Used in

- [Fund the AI wallet and see what the platform costs you](/use-cases/fund-the-ai-wallet/)