Behind Anthropic's recent ban on OpenClaw is the increasing emphasis on the "entrance effect" by major model manufacturers. Starting from 3pm on April 4th in the East Coast, Claude's subscription limit will not cover any third-party agent tools (OpenClaw being the first to be affected). Users can still log in, but they must open extra usage or pay as you go directly. subscribing to that "friendly quota" will no longer be a waste of high-intensity automated tasks. On the surface, it may seem like there is a shortage of capacity, the execution of TOS, and safety diagnosis issues, but fundamentally, Anthropic should begin to place extreme emphasis on the "entry effect". It seems that they no longer want third-party harnesses like OpenClaw to become the "front door" that users open every day. Once the user's mind first thinks of OpenClaw and then calls the Claude model, Anthropic is completely commodified - reduced to a low-level supplier, with data, habits, and upgrade paths all intercepted by third parties. Once the entrance is lost, it will be too late to snatch it back later. So the Authropic action is very clear: First, server-side technology blocking (starting from January); The document explicitly prohibits the use of subscription vouchers for third parties; The email was officially executed on the evening of April 3rd; At the same time, quickly add Channels, Remote Control, Cowork and other functions in Claude Code, directly benchmarking the core experience of OpenClaw. This is not just a simple business adjustment, but a typical platform defense+attack: raising the threshold for third-party access, making it more expensive and troublesome to use, while driving users towards their own agent products, firmly controlling distribution channels and user minds. It can be seen that the era of AI agents has just begun, but competition has already intensified. OpenAI, Google, and Meta are all vying for control of the agent layer. Whoever turns the "entrance" into their own walled garden first will take the initiative in the next stage. Anthropic's logic this time is very realistic - platformization vs commodification, the entrance is the gate of destiny. Heavy users may experience pain in the short term, while ordinary users may not feel it at all. In the long run, if Claude Code can truly be more user-friendly and secure than third-party solutions, many people will naturally migrate it; Otherwise, it will accelerate the mixing of multiple models or the migration to open source/other sources. The AI proxy war has completely entered the entrance battle of "who controls how users use AI every day" from whether the model is smart or not. It's getting more and more convoluted and interesting