# Anthropic says its own team used Claude Code mods to build /diff and AGENTS.md support

> Anthropic's @ClaudeDevs account says the team used Claude Code mods to build features like /diff and AGENTS.md support, linking to a Claude blog post on the mods.

- **Topic**: Models
- **Published**: 2026-10-02T00:15:42.849Z
- **Updated**: 2026-10-02T00:16:28.608Z
- **Canonical URL**: https://highsignal.sh/stories/anthropic-lets-developers-mod-claude-code-48e950da

## Why It Matters

A modest, self-reported update from Anthropic that positions mods as part of how Claude Code features get built, rather than an independent evaluation of them. It lands on a day dominated by Google's Gemini 4 Argon launch and other model announcements.

## Primary Sources & Citations

- [You can now mod Claude Code: - Change how it behaves - Customize the UI - Swap in your own features Write one with a ...](https://x.com/ClaudeDevs/status/2105721434807083061) — *X - Claude Devs* (Community discussion)
- [We’ve used mods to build features like /diff and AGENTS](https://claude.com/blog/claude-code-mods) — *X - Claude Devs* (Community discussion)
- [We're adding pre-built sample mods to the Claude Code Playground repo you can riff off of, if you need some inspiration](https://claude.dev/blog/getting-started-with-claude-code-mods/) — *X - Claude Devs* (Community discussion)

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