Claude Code Mods Let You Intercept Tool Calls With Your Own JS/TS Functions
Prompt Engineering · youtube · 2026-10-03
Claude Code shipped Mods: custom JavaScript/TypeScript functions that run inside Claude Code. A mod can watch, modify, or block a tool call before it executes, and can render its own panels in the terminal and desktop app.
Key points from the video:
- How mods differ from hooks, skills, and MCP servers, and when each fits
- Installing mods from a marketplace, first mod with hot reload, and a guard mod that blocks rm -rf
- Having Claude itself write mods tailored to your workflow
- Security caveat: mods run locally with your permissions — read the code or run claude plugin validate before installing
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