Alex Sterling

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[Alex Sterling @ThisIsAlexAI]

Anthropic accidentally leaked the entire source code for Claude Code.

512,000 lines. 1,906 files. Live on npm for hours.

Here's what they were hiding 🧵

[Alex Sterling @ThisIsAlexAI]

The repo hit 50,000+ clones before Anthropic issued DMCA takedowns.

Someone rewrote the whole thing in Python overnight.

OpenAI and Google joked their code leaked too — except theirs was already open source.

The most "safety-first" AI company just went involuntarily open-source.

Follow for more 👇

[Alex Sterling @ThisIsAlexAI]

Anthropic accidentally leaked the entire source code for Claude Code.

512,000 lines. 1,906 files. Live on npm for hours.

Here's what they were hiding 🧵

[Alex Sterling @ThisIsAlexAI]

The best part?

Anthropic's head of Claude Code said "100% of my contributions in the last 30 days were written by Claude Code."

The code was leaked because Claude Code uses Bun (a runtime Anthropic acquired), which had a known bug shipping source maps in production.

Claude leaked itself

[Alex Sterling @ThisIsAlexAI]

Fourth: Proactive Mode.

A feature flag that lets Claude Code act autonomously — making changes without being asked.

Also found: scaffolding for crypto-based payments so AI agents can transact on their own.

The agentic era is already built. Just not shipped yet.

[Alex Sterling @ThisIsAlexAI]

Third — and this one's wild:

Anthropic built a fake tool injection system called ANTI_DISTILLATION.

If a competitor is recording Claude Code's API traffic to train their own model, it injects fake tool definitions to corrupt their training data.

AI companies are at war.

[Alex Sterling @ThisIsAlexAI]

Second: KAIROS.

An always-on autonomous agent mode that runs in the background — even when you haven't asked it anything.

Includes a /dream feature for "nightly memory distillation."

Claude watching you sleep. Noted.

[Alex Sterling @ThisIsAlexAI]

First thing people found: a fully built Tamagotchi pet system called /BUDDY.

→ 18 species (duck, dragon, capybara, "chonk")
→ Rarity tiers — 1% legendary
→ Stats: DEBUGGING, PATIENCE, CHAOS, SNARK
→ Planned launch date: April 1, 2026

This was their April Fools drop. Leaked early.