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Claude Code just got mods, a way to customize how it behaves and looks. Here's what you need to know. The ClaudeDevs account announced it on Oct 2, 2026, one day after the http://Claude.dev launch. The post says you can now mod Claude Code to change how it behaves, customize the UI, and swap in your own features. It had 685.1K views within hours. A mod is a few lines of TypeScript, or you can have Claude build it for you by prompting it. Mods ship inside plugins, so you install them with /plugin in the CLI or desktop app. Under the hood, mods are hooks. Each one is a small JavaScript or TypeScript module that runs inside Claude Code. It can intercept internal events like tool calls, prompts, model requests and renders, and change what actually happens. It can also add its own UI and commands. Mods can even fork agents to do extra work, such as a custom classifier that writes memories every turn. Anthropic says it used mods to build features like /diff and AGENTS.md support. Claude Code 2.1.287 carries the release, with 106 CLI changes. Pre-built sample mods are being added to the Claude Code Playground repo. A getting started guide is on the http://claude.dev blog, written by Addy Osmani. One user says mods have been in early preview for a couple of weeks. One example is the next-steps mod, which suggests what to do next, including picking skills and other commands. Install it with: claude plugin marketplace add anthropics/claude-plugins-community claude plugin install next-steps@claude-community Mods run with the same access to your machine as Claude Code itself. Anthropic says to only install mods from sources you trust. You can keep a mod to yourself, or submit it to the Claude directory at http://claude.ai/directory. Builders are reacting fast. Boris Cherny calls it customizing Claude by just prompting it. Lydia Hallie describes mods as middleware for Claude Code. Thariq says all software is becoming malleable. Users are asking for the same in Codex, and one got Doom running in the Claude Code spinner. Key numbers: - 685.1K views on the announcement post - Claude Code 2.1.287 - 106 CLI changes in that release - Announced Oct 2, 2026 Mods are a plugin-based way to rewrite Claude Code's behavior and UI in TypeScript.
