Anthropic has taken legal action against OpenCode, resulting in the removal of Anthropic-specific references from the OpenCode codebase. The removal includes the branded system prompt file, the opencode-anthropic-auth built-in plugin, and the Anthropic hint from the provider login UI. This change has sparked discussion among developers and users, with some expressing concerns about the impact on the OpenCode community. The removal is seen as a move by Anthropic to protect its intellectual property and business interests.