Anthropic's AI coding tool leaks its own source code for the second time in a year

A researcher flagged the issue on 31 March 2026, and the code has since been archived on multiple public repositories, raising fresh questions about the company's software release practices.
InfoQ

Anthropic Accidentally Exposes Claude Code Source via npm Source Map File

Anthropic's Claude Code CLI had its full TypeScript source exposed after a source map file was accidentally included in ...

Anthropic Claude source code leak explained: Techie reveals how a 4 am update exposed 512,000 lines of code

A routine software update for Anthropic's Claude Code tool accidentally leaked its entire source code, sparking rapid community response. Within hours, a developer rewrote the tool in Python and then ...
Bleeping Computer

Claude Code source code accidentally leaked in NPM package

Anthropic says it accidentally leaked the source code for Claude Code, which is closed source, but the company says no customer data or credentials were exposed. While Anthropic pledges support to the ...