A developer has created an automated script using `launchd` to manage the end-of-life transition for the Claude Code model, specifically targeting `Claude Fable-5`. This script is designed to run once on or after July 7, 2026, to update the `settings.json` file by changing the model field from `claude-fable-5` to `opus`. It includes a date guard to prevent early execution and an atomic four-step process for patching the JSON, including creating a backup and validating the new JSON before overwriting. The script also sends a desktop notification and then unregisters itself using `launchctl unload`, ensuring it only runs once and self-destructs. AI
IMPACT Provides a reusable pattern for managing scheduled, single-execution tasks in AI development environments.
RANK_REASON Developer-created script for managing a specific model's end-of-life.
Read on dev.to — Claude Code tag →
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