---
title: "Get end-user usage breakdown"
method: GET
path: "/v1/projects/{projectSlug}/users/{userId}/usage"
tags: ["Users"]
---

# Get end-user usage breakdown

`GET /v1/projects/{projectSlug}/users/{userId}/usage`

Returns the end-user's top values of a usage dimension — `model`, `provider`, or `tool` — ranked by distinct trace count.

## Path parameters

- `projectSlug` string, required — Project slug (human-readable identifier)
- `userId` string, required — End-user identifier. URL-encode values containing special characters.

## Query parameters

- `dimension` 'model' | 'provider' | 'tool', required — Dimension to break the usage down by.
- `limit` integer — Maximum number of values to return.
- `errorsOnly` 'true' | 'false' — When `true`, scope every aggregate to errored traces only.

## Response `200`

Usage breakdown

- UserUsageResponse
  - `items` UserUsageSlice[], required — Top dimension values, by distinct trace count, most used first.
    - `value` string, required — A value of the requested dimension (a model, provider, or tool name).
    - `traceCount` integer, required — Distinct traces of the user carrying this value.

## Other responses

- `400` — Validation error
- `401` — Unauthorized
- `404` — Not found

---

[API](https://skmtc.net/latitude-dev/apis/latitude.md) · [All operations](https://skmtc.net/latitude-dev/apis/latitude/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/latitude-dev/latitude/versions/6a8789c59a5c/schema)