---
title: "Usage"
method: GET
path: "/api/v1/usage"
tags: ["billing"]
---

# Usage

`GET /api/v1/usage`

## Query parameters

- `start_date` string, required
- `end_date` string, required
- `granularity` 'day' | 'hour'

## Response `200`

Successful Response

- UsageResponse
  - `summary` UsageSummary, required
    - `request_count` integer, required
    - `total_input_tokens` integer, required
    - `total_output_tokens` integer, required
    - `total_cached_tokens` integer, required
    - `total_tokens` integer, required
  - `by_model` ModelUsage[]
    - `model_slug` string, required
    - `request_count` integer, required
    - `input_tokens` integer, required
    - `output_tokens` integer, required
    - `cached_tokens` integer, required
    - `total_tokens` integer, required
  - `series` UsageSeriesPoint[]
    - `period_start` string, required
    - `request_count` integer, required
    - `input_tokens` integer, required
    - `output_tokens` integer, required
    - `total_tokens` integer, required
  - `start_date` string, required
  - `end_date` string, required
  - `granularity` 'day' | 'hour', required

---

[API](https://skmtc.dev/trajectory/apis/trajectory-api.md) · [All operations](https://skmtc.dev/trajectory/apis/trajectory-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/trajectory/trajectory-api/revisions/d930b23b9602/schema)