Anthropic blocks third-party tools using Claude Code OAuth tokens (archaeologist.dev)

Anthropic has faced significant backlash after closing a loophole that allowed customers to use their Claude subscription with third-party coding agents, such as OpenCode. This change, implemented without prior announcement, aims to address concerns over unusual traffic patterns and support difficulties. However, customers responded negatively, with many threatening to cancel their subscriptions. This abrupt decision has sparked questions about Anthropic's commitment to its user base and its desire to maintain control over the entire AI value chain. The implications for the AI/ML community are substantial, as this incident highlights Anthropic's struggle to secure its market position against competitors like OpenAI, which has now provided support for similar third-party platforms. By prioritizing strict enforcement of its terms over customer relationships, Anthropic risks alienating its user base and losing market share in a rapidly evolving landscape, where developer preferences are crucial for long-term growth. This situation serves as a cautionary tale for companies in the AI space about the importance of user trust and adaptability amid intensifying competition.