What caused the Claude Code leak?

Anthropic's npm package v2.1.88 included a source map linking to a public Cloudflare zip—1,900 TS files, 512K lines, out before takedowns.

How do I implement Claude Code's tool registry?

Use a Map-based class: register tools with name, desc, schema, perm, execute fn. Filter/get/execute with perm checks. Perfect for React AI apps.

Does Claude Code's architecture beat competitors?

Yes—permission gating and ULTRAPLAN make it production-grade. Loops don't hallucinate; plans guide tools reliably.

📦 Open Source

512,000 Lines Leaked: Claude Code's Permission-Gated Agent Loop Exposed

512,000 lines of TypeScript from Anthropic's Claude Code hit the wild after a source map slip-up. This isn't just a leak—it's a roadmap for bulletproof AI coding agents.

DevTools Feed Apr 03, 2026 3 min read 23 views

Screenshot of Claude Code's leaked TypeScript agent loop diagram

⚡ Key Takeaways

Claude Code's permission-aware agent loop prevents tool-call chaos, essential for prod AI. 𝕏
Tool registry pattern scales any AI app—declarative, secure, React-ready. 𝕏
ULTRAPLAN forces structured task breakdowns, boosting reliability over naive agents. 𝕏

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#AI Coding Agents #AI agents #Anthropic TypeScript #Claude Code leak #LLM planning #TypeScript leak #agent architecture #claude-code #tool registry

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Originally reported by dev.to

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