Claude Code's new Mods system lets developers rewrite the AI coding tool from the inside

The DecoderOct 3, 2026Oct 3, 2026, 3:12 AM AST

Anthropic added a Mods system to its Claude Code assistant, letting developers write JavaScript or TypeScript programs that hook into the tool, adding panels, intercepting actions or creating new commands. Mods get the same rights as the user and are not sandboxed, so Anthropic warns to install only trusted ones, and organizations can control which load.

Summary written with AI by HowTechMoves, based on reporting by The Decoder.

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