---
title: "Check a single user"
method: GET
path: "/checkuser/{id}"
tags: ["User Checking"]
---

# Check a single user

`GET /checkuser/{id}`

Check if a user exists and retrieve their group memberships or group count

## Path parameters

- `id` string, required

## Response `200`

User found successfully

- object
  - `success` boolean
  - `userId` string
  - `username` string
  - `groupCount` number — Only included if canViewGroupId is false
  - `lastSeen` string, date-time

## Other responses

- `401` — Unauthorized - Invalid or missing API key
- `404` — User not found
- `429` — Rate limit exceeded

---

[API](https://skmtc.dev/moco-co/apis/moco-co-api.md) · [All operations](https://skmtc.dev/moco-co/apis/moco-co-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/moco-co/moco-co-api/revisions/c28fab28152c/schema)