Anthropic Bans OpenClaw: Claude Subscription Limits Third-Party Tools, Developer Costs Surge

On April 4, AI company Anthropic announced that starting at 3:00 PM Eastern Time on April 4, it will prohibit access to third-party tools, including the open-source project OpenClaw, through its Claude subscription service. The new regulations require that related functionalities can only be used through additional packages or pay-as-you-go API billing. This adjustment means that many developers and teams relying on OpenClaw to build automated workflows will shift from a fixed subscription cost model to an unlimited pay-as-you-go system, significantly increasing overall usage costs. Some developers have indicated that their previous usage costs of around $20 per month could soar to hundreds or even thousands of dollars. The market generally believes this move is related to the recent joining of OpenClaw founder Peter Steinberger at OpenAI. Meanwhile, Anthropic is accelerating the promotion of its own tool ecosystem, including native integration solutions for Claude, to replace third-party toolchains. It is noteworthy that Anthropic has previously tightened third-party access through technical restrictions, updates to service terms, and functional replacements. This policy is seen as a ‘final blockade’ and will be extended to more tools. Industry analysis points out that this event reflects an intensifying trend of ‘ecosystem tightening’ in AI platforms, as leading companies strengthen their control through vertical integration. At the same time, the developer ecosystem faces rising cost uncertainties and increased platform dependency risks, which may further drive some users to switch to more open alternatives.