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

512,000 lines of Claude Code just leaked. Here's what Anthropic didn't want you to see.

Reporting by The Verge AI 1 min brief
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The KeyNews take

Why it matters

A source map file exposed in Claude Code's 2.1.88 update revealed internal AI instructions, memory architecture, and unreleased features—giving competitors and security researchers rare visibility into Anthropic's coding assistant infrastructure and product roadmap.

The key facts

10 to know

  1. 512,000+ lines of TypeScript codebase exposed

  2. Leak contained via source map file in Claude Code 2.1.88 update

  3. Unreleased features discovered by reverse engineering

  4. AI bot instructions and memory architecture exposed

  5. Published March 31, 2026

  6. 512,000+ lines of TypeScript code exposed via source map file in 2.1.88 update

  7. Leaked data includes unreleased features, system prompts, and memory architecture

  8. Discovery made public on X; reported by Ars Technica and VentureBeat

  9. Published Mar 31, 2026 — timing suggests possible April 1 context; verify authenticity

  10. UNVERIFIED — Claims about Tamagotchi-style 'pet' and always-on agent need corroboration

Go to the source

The Verge AItheverge.com

Publisher excerpt: After Anthropic released Claude Code's 2.1.88 update, users quickly discovered that it contained a package with a source map file containing its TypeScript codebase, with one person on X calling attention to the leak and posting a file containing the code. The leaked data reportedly contains more…
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