---
title: "Check Username Availability"
method: GET
path: "/api/v1/users/username-availability"
tags: ["User APIs", "users"]
---

# Check Username Availability

`GET /api/v1/users/username-availability`

## Query parameters

- `username` string, required

## Response `200`

Successful Response

- UsernameAvailabilityResponse
  - `username` string, required
  - `available` boolean, required
  - `suggestion` string, nullable

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/carbonarc/apis/carbon-arc-client-admin-api.md) · [All operations](https://skmtc.net/carbonarc/apis/carbon-arc-client-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/carbonarc/carbon-arc-client-admin-api/revisions/a8ca30023371/schema)