---
title: "Check Domain Limit"
method: POST
path: "/auth/check-domain-limit"
tags: ["domain-limit"]
---

# Check Domain Limit

`POST /auth/check-domain-limit`

Check whether a domain is allowed to sign up.

Checks in order:
1. domain_exclusions — if matched, return banned
2. domain_inclusions — if matched, return allowed (skip count)
3. Count existing users — enforce SIGNUP_DOMAIN_LIMIT

## Request body

- DomainLimitRequest — Request body for checking domain signup limits.
  - `domain` string, required

## Response `200`

Successful Response

- DomainLimitResponse — Response describing whether another signup is allowed for a domain.
  - `allowed` boolean, required
  - `banned` boolean

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/pioneer/apis/brain-api.md) · [All operations](https://skmtc.net/pioneer/apis/brain-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/pioneer/brain-api/revisions/31dfe831e079/schema)