Verge

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

The Register

Anthropic accidentally exposes Claude Code source code

Fried_rice

Metaculus

Will Anthropic Be A Designated Supply Chain Risk On May 1 2026

Medium

Anthropic Accidentally Leaked Its Own Secret Model Yes Really De322060972A

TukiFromKL

MinusWells

damianplayer

The Economic Times

Indian capital, British soul: How TVS Motor Company and the West Midlands are rewriting the rules of global mobility

Anthropic accidentally releases source code for Claude AI agent

CNBC

Anthropic leaks part of Claude Code's internal source code

mal_shaik

KevinNaughtonJr

Claude Code's source reveals extent of system access

Cybernews

Anthropic Claude Code Source Leak

GitHub

GitHub - Kuberwastaken/claurst: Claude Code in Rust & a Breakdown of How it Works

Business Insider

Anthropic Leak Reveals Claude Code Internal Source Code

itsolelehmann

Elon Musk

Rishi Sunak

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Bill Gates

Andrew Ng

Yoshua Bengio

Fei-Fei Li

Demis Hassabis

Melanie Mitchell

Sam Altman

Dario Amodei

Geoffrey Hinton

Yann LeCun

Gary Marcus

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Connor Leahy

Eliezer Yudkowsky

Jaan Tallinn

Marc Andreessen

Eric Schmidt

Norbert Wiener

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Hans Moravec

John Smart

There's a "wall of fear-mongering and doomerism" in the AI world right now.

"Worrying about AI today is like worrying about overpopulation on Mars."

Concerns that AI could pose a threat to humanity is "preposterously ridiculous."

Claiming AI poses an existential threat is "such an extreme" and risks "wip[ing] out some of its potential benefits."

"I'm more concerned about... the risks that are here and now [than the existential threat of AI]."

Current AI is "not anywhere close" to posing an existential threat but it could in the future.

AI is the "biggest existential threat" to humanity.

AGI's worst-case scenario would be "lights-out for all of us."

Powerful AI systems "taking control" pose an "existential threat."

AI has a "10 to 25 per cent" chance of destroying humanity.

"The most likely result of building a superhumanly smart AI... is that literally everyone on Earth will die."

Does AI Pose an Existential Threat to Humanity?

Anthropic has confirmed that parts of Claude Code's internal source were inadvertently leaked after a release packaging error. "This was a release packaging issue caused by human error, not a security breach," a company spokesperson said, adding that no customer data or credentials were exposed.

Anthropic has confirmed that parts of Claude Code's internal source were inadvertently leaked after a release packaging error. "This was a release packaging issue caused by human error, not a security breach," a company spokesperson said, adding that no customer data or credentials were exposed.

The leak occurred when Claude Code v2.1.88 was published to the npm registry with a source map file, cli.js.map, that contained the full TypeScript source code. The file reportedly mapped 1,900 files and more than 512,000 lines of code.

The leak occurred when Claude Code v2.1.88 was published to the npm registry with a source map file, cli.js.map, that contained the full TypeScript source code. The file reportedly mapped 1,900 files and more than 512,000 lines of code.

A post on X announcing the leak drew tens of millions of views, and copies of the code were mirrored to GitHub repositories, one of which accumulated more than 50,000 forks.

Chaofan Shou

A post on X announcing the leak drew tens of millions of views, and copies of the code were mirrored to GitHub repositories, one of which accumulated more than 50,000 forks.

Analysis of the leaked code revealed several unreleased internal features, including further details on AI model Mythos, a background always-on assistant mode, and a Tamagotchi-style companion system called "Buddy" with 18 species of varying rarity gated behind a compile-time feature flag.

Analysis of the leaked code revealed several unreleased internal features, including further details on AI model Mythos, a background always-on assistant mode, and a Tamagotchi-style companion system called "Buddy" with 18 species of varying rarity gated behind a compile-time feature flag.

The source code also contained an "Undercover Mode" designed to prevent Anthropic employees from revealing internal information when using Claude Code on public repositories, instructing the AI not to include internal codenames or disclose that it is an AI in commit messages or pull requests.

The source code also contained an "Undercover Mode" designed to prevent Anthropic employees from revealing internal information when using Claude Code on public repositories, instructing the AI not to include internal codenames or disclose that it is an AI in commit messages or pull requests.

The incident marked Anthropic's second data exposure in under a week, following a separate leak of model descriptions.

The incident marked Anthropic's second data exposure in under a week, following a separate leak of model descriptions.

Verge #1355

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Business Insider #3

Analysis of the leaked code revealed several unreleased internal features, incluing further details on AI model Mythos, a background always-on assistant mode, and a Tamagotchi-style companion system called "Buddy" with 18 species of varying rarity gated behind a compile-time feature flag.

Analysis of the leaked code revealed several unreleased internal features, incluing further details on AI model Mythos, a background always-on assistant mode, and a Tamagotchi-style companion system called "Buddy" with 18 species of varying rarity gated behind a compile-time feature flag.

This is yet another embarrassing mishap for Anthropic. A brand built upon superior AI safety has leaked over 500,000 lines of internal code through a basic mistake. Before lecturing the rest of the world on safety and security, Anthropic should first fix the mess at home.

This is yet another embarrassing mishap for Anthropic. A brand built upon superior AI safety has leaked over 500,000 lines of internal code through a basic mistake. Before lecturing the rest of the world on safety and security, Anthropic should first fix the mess at home.

Sumit Pandey

Tuki

This is nothing more than an unfortunate, one-off human error with no sensitive customer data leaked in the process. If one thing is to be taken from the incident, it is that Anthropic continues to build game-changing AI capabilities for its customers.

This is nothing more than an unfortunate, one-off human error with no sensitive customer data leaked in the process. If one thing is to be taken from the incident, it is that Anthropic continues to build game-changing AI capabilities for its customers.

Ole Lehmann

This incident may be more than an accidental error. As major AI companies require increasing levels of data, Anthropic will be receiving unrivalled feedback from the millions currently exploring their "leaked" code. Just in time for April Fools, things may not be as they seem.

This incident may be more than an accidental error. As major AI companies require increasing levels of data, Anthropic will be receiving unrivalled feedback from the millions currently exploring their "leaked" code. Just in time for April Fools, things may not be as they seem.

Minus Wells

Damian Player

There is a 31% chance that Anthropic will be designated a supply chain risk by May 2026, according to the Metaculus prediction community.

There is a 31% chance that Anthropic will be designated a supply chain risk by May 2026, according to the Metaculus prediction community.

Anthropic Leaks 512K Lines of Source Code

Anthropic Leaks 512K Lines of Source Code

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Anthropic Leaks 512K Lines of Source Code

Anthropic Leaks 512K Lines of Source Code

The Spin

Metaculus Prediction

The Controversies

Andreessen

Ng

LeCun

Mitchell

Li

Bengio

Musk

Altman

Hinton

Amodei

Yudkowsky

Go Deeper

Articles on this story

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