---
title: experimental.middlewareClientMaxBodySize
description: Configure the maximum request body size when using middleware.
url: "https://nextjs.org/docs/15/pages/api-reference/config/next-config-js/middlewareClientMaxBodySize"
version: 15.5.15
lastUpdated: 2025-10-09
prerequisites:
  - "Configuration: /docs/15/pages/api-reference/config"
  - "next.config.js Options: /docs/15/pages/api-reference/config/next-config-js"
---


---

For an index of all available documentation, see [/docs/15/llms.txt](/docs/15/llms.txt)