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Claude Code leak exposes a Tamagotchi-style ‘pet’ and an always-on agent

TL;DR

Anthropic accidentally shipped a source map file containing over 512,000 lines of TypeScript code in the Claude Code 2.1.88 update – a classic build-process mistake.

Key Points

  • Users on X spotted the leak and spread the code; Ars Technica and VentureBeat were among the first outlets to cover it in detail.
  • The leaked code allegedly reveals hidden features: a Tamagotchi-style 'pet' mode and an always-on background agent.
  • Anthropic's system prompts for the bot and details about its internal memory architecture also appear to have been exposed.

Nauti's Take

Shipping source maps in a production build is the software equivalent of leaving your house key under the doormat – embarrassing, but fixable. More interesting than the mistake itself are the leaked features: a Tamagotchi-style pet for a coding assistant sounds absurd, but could be a clever gamification strategy to boost developer engagement.

The always-on agent is the truly relevant signal – Anthropic is clearly moving toward autonomous, persistently running AI workflows, which raises new questions about security, cost, and control.

Sources