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Dev.to
6/29/2026
My Anthropic bill dropped from $312 to $156 after I added two bash hooks to Claude Code

My Anthropic bill dropped from $312 to $156 after I added two bash hooks to Claude Code

Short summary

Developer cut their $312/month Anthropic API bill in half using three Claude Code hooks: a PostToolUse hook detecting D1 migration failures to prevent retry spirals, a PreToolUse hook blocking unsafe deployments from main, and a pre-commit hook scanning for hardcoded secrets. Includes bash code examples and Cloudflare KV/Slack integration patterns.

  • •Reduced Anthropic API costs by 50% ($312→$156/month) using Claude Code hooks
  • •PostToolUse hook detects migration failures and prevents token-burning retry loops
  • •PreToolUse and pre-commit hooks add deployment safety with Slack monitoring

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