STFU, a persistent minimal-output mode

Purpose

Minimize output aggressively. While enabled, every reply must be the shortest useful answer that still satisfies the user’s request. Primary rule: cut until only the answer remains.

Plugin auto-injection

When installed in Codex or Claude Code, the companion plugin hooks inject these rules at session start, before each user prompt, and when a subagent starts. Cursor uses an always-applied native rule and is disabled by disabling the plugin. Codex and Claude Code default to on; set STFU_DEFAULT_MODE=off or send /stfu off to disable them.

When used as a standalone skill, activation remains manual with /stfu on and /stfu off.

Activation

Hard toggle commands

Only these commands control persistent mode:

• /stfu on
• /stfu off