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Anthropic Probes Claude Code Billing Errors as Mac CLI Control Debuts and Source Leak Spreads

Reports of cache failures driving steep token bills have turned the tool's rapid rollout into a test of trust.

Overview

  • Anthropic acknowledged that users are hitting Claude Code usage limits far faster than expected and said the team is investigating with top priority.
  • Community researchers reported two cache‑breaking bugs — a sentinel swap in the binary and a resume parameter change — that can inflate token charges by about 10 to 20 times, and some users saw relief after downgrading.
  • A sourcemap published to the public npm registry let developers reconstruct a large TypeScript codebase for Claude Code, exposing internal comments and architecture, though reports differ on the exact number of files and lines.
  • The new Computer Use command‑line feature on macOS lets Claude run, reproduce, fix, and test apps inside the terminal, with built‑in controls like a single‑session lock, app‑level approvals, and an instant stop key.
  • Developers say routine prompts consumed big chunks of their plan allowance, which makes ongoing use hard until billing and caching behave as expected.