Claude Mods: TypeScript plugins that run inside Claude Code

What the research found

Latent Space essay argues Claude Mods, TypeScript or JavaScript plugins that run inside Claude Code, are an early Attention Interface; Anthropic has shipped six built-in mods and a plugin-authoring skill lets Claude build mods.

Claims and how well the evidence supports them

1. Anthropic has shipped six built-in mods in Claude Code 99%
2. Claude Code has a built-in skill (plugin-authoring) that teaches Claude to build mods 99%
3. Mods are Claude Code plugins made of TypeScript or JavaScript functions that respond to events like prompts and tool calls 99%
4. Built-in mods are listed under Built-in in /plugin Installed view 98%

Evidence

• latent.space https://latent.space/p/claude-mods

Actionability rated low.