Anthropic Revises Terms To Bar Third-Party Harnesses

Anthropic this week updated its Consumer Terms to explicitly forbid using OAuth tokens from Claude Free, Pro, and Max subscriptions in third-party harnesses. The change clarifies existing rules around Claude Code and aims to stop token arbitrage that allowed cheaper subscription access to models versus API usage, prompting tools like OpenCode to remove support for subscription account keys. This reinforces Anthropic's subscription revenue protections.
Scoring Rationale
Policy enforcement affects developer economics broadly; limited novelty since it's a clarification of existing terms.
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