Claude Code r/ClaudeAI

PSA: an API key in .env silently switches Claude Code to API billing

TLDR

A user lost $187 because Claude Code read ANTHROPIC_API_KEY from a project .env meant for another server and silently billed the API instead of the subscription. Anthropic confirmed this is intentional behavior.

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Source: r/ClaudeAI · Category: Claude Code · Summary is machine-generated; verify against the original.

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PSA: an API key in .env silently switches Claude Code to API billing

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