# Anthropic releases Mods to let developers change Claude Code's behavior

_Published Sunday, October 4, 2026 at 2:19 AM EDT · AI, Products · Latest · Tier 2 — Notable_

![Anthropic releases Mods to let developers change Claude Code's behavior — Primary](https://the-decoder.com/wp-content/uploads/2026/08/anthropic_claude.png)

Anthropic released a Mods system that lets developers change Claude Code's interface and behavior through JavaScript or TypeScript functions, The Decoder reports. These functions run inside the coding tool and respond to events such as user prompts, tool calls and interface rendering. Developers can add panels, intercept tool calls and create commands.

Mods work in the command-line interface, desktop app and partly in the VS Code extension. Organizations can control which Mods load. The first official plugin, You Should Know, runs a separate agent that watches Claude's output for overlooked information. Mods operate with the user's permissions and are not sandboxed, prompting Anthropic to recommend installing only trusted ones.

## Sources

- [the-decoder.com](https://the-decoder.com/claude-codes-new-mods-system-lets-developers-rewrite-the-ai-coding-tool-from-the-inside/)

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Canonical: https://techandbusiness.org/newswire/nkZ9hsYM9XIIH7G1DE_jRU
Published: 2026-10-04T06:19:10.653Z
Story chronology: 2026-10-03T07:12:09.000Z
Retrieved: 2026-10-04T09:24:04.280Z
Publisher: Tech & Business (techandbusiness.org)