February’s allegation of distillation by fraudulent accounts; March’s countermeasures, found in the source.
Development
A leaked codebase reveals decoy tools planted to poison copycats
Claim
Anthropic's Claude Code, a roughly 512,000-line TypeScript codebase, leaked, and third-party forensics revealed anti-distillation features injecting decoy tool definitions to poison copycats, an undercover mode hiding internal codenames, and a regex-based sentiment analyzer to detect user frustration.
Reported metric: ~512,000 lines
Reporting date: (not necessarily the event date)
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to April 1, 2026 (theinnermostloop.substack.com)
Cite or correct this record
Suggest a correction — opens a GitHub draft for you to review and submit.