Claude 发的 A new monthly Agent SDK credit for your plan 这封邮件没怎么看懂

Starting June 15, Max 5x plan subscribers can claim a $100 monthly credit for using the Claude Agent SDK and `claude -p`, including third-party tools built on the Agent SDK.

As part of this change, Agent SDK and other programmatic usage will run on this credit, and will not impact your subscription limits. This includes third-party applications built on the Agent SDK. If you use your full Agent SDK credit in a given month, continued use will draw from extra usage, which can be manually enabled and disabled.

Your subscription usage limits don’t change. They stay reserved for interactive usage of Claude Code, Claude Cowork, and chat. See the Help Center for more details.

这个意思是以后用 Claude Code 就要单独的使用这 100 刀的额度了吗？我怎么感觉直接把额度砍没了，100 刀能干啥...