---
title: "API logout"
method: POST
path: "/v3/logout"
tags: ["authentication"]
---

# API logout

`POST /v3/logout`

Sign out of your BILL developer account. In response, the current `sessionId` expires and your API session is terminated.

You will be required to sign in again with `/v3/login` before you can make another API call.

## Headers

- `sessionId` string, nullable — API session ID generated with `/v3/login`
- `devKey` string, nullable — Developer key generated with your BILL developer account

## Response `200`

API logout response

## Other responses

- `4XX` — List of errors.
- `5XX` — List of errors.

---

[API](https://skmtc.net/bill/apis/bill-v3-api.md) · [All operations](https://skmtc.net/bill/apis/bill-v3-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/bill/bill-v3-api/versions/0483350c434e/schema)