Expired70% confidenceFactTime unknown

The leaked source code contains a function named GetUndercoverInstruction, which is activated when Claude Code runs in public open-source repositories.

4

Sources

70%

Confidence

Medium-term (~90 days)

Relevance

5/31/2026

First Seen

This claim has expired. It is kept for the record and no longer describes the current state.

Valid until: 8/29/2026(expired)

Sources

Anthropic源码泄露：Opus 4.7、Sonnet 4.8及卧底模式全面曝光

bilibili未来变量relaunch

Related Entities

Claude Codeproduct GetUndercoverInstructionconcept

Related Claims

UnverifiedThe source code of Claude Code v2.1.88 was leaked, and reverse engineering analysis revealed its internal operating mechanism.79% similar VerifiedWhat was leaked was not the complete code of Claude Code, but the code of its core components.77% similar Unverified泄露的代码揭示Claude Code内部采用了基于事件驱动的流式架构、工具调用链（Tool Use Chain）以及多Agent任务分发机制75% similar UnverifiedThe leaked code revealed that Claude Code employs extensive Tool Use architecture, complex context management mechanisms, and a file system sandbox strategy.75% similar VerifiedAnthropic's Claude Code NPM package accidentally included Source Map files, causing the complete original source code to be leaked.72% similar

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