🧠 claude-think

Reasoning modes + live statusline for Claude Code

Cycle through thinking modes with !think — Claude switches model, behaviour, and status bar automatically.

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Demo

!think → think_light — deep reasoning, no tool use

!think → think_PRD — structured discovery interview

!think → off — back to normal, model restored

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Modes

	Mode	Model	Behaviour
○	off	your default	Normal Claude Code
⚡	think_light	Opus (auto)	Reasons and plans only — no code execution, no file writes
◉	think_PRD	Opus (auto)	Runs a structured discovery interview, writes one spec .md

The model switches automatically on activation and restores when you return to off.

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Install

Requirements: jq · python3 · Claude Code

git clone https://github.com/deve1993/Claude_Think.git
cd Claude_Think
bash install.sh

Restart Claude Code. That's it.

install.sh patches ~/.claude/settings.json non-destructively — it only adds what's missing.

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Usage

In any Claude Code prompt:

!think

off  →  think_light   switches to Opus, enables reasoning-only mode
     →  think_PRD     stays on Opus, starts structured PRD discovery
     →  off           restores your original model

The statusline updates after your next message.

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How it works

~/.config/claude-think/
├── think-toggle.sh   cycles mode + edits settings.json model field
├── think-hook.sh     UserPromptSubmit hook — prepends system context per mode
└── statusline.sh     reads Claude Code JSON from stdin, renders the status bar

~/.claude/state/
└── think-mode.json   { "mode": "off", "previous_model": "sonnet" }

Model switching — think-toggle.sh writes directly to ~/.claude/settings.json. Claude Code re-reads it per request, so the change is instant with no restart.

Context injection — think-hook.sh runs before every prompt via the UserPromptSubmit hook. When a mode is active it outputs {"additionalContext": "..."} which Claude Code prepends silently to your message.

Statusline — statusline.sh is called by Claude Code on every render. It reads the think-mode state file and appends the mode symbol to the bar.

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Customise

Change the PRD prompt Edit ~/.config/claude-think/think-hook.sh and replace the think_PRD context string with your own flow.

Change the Opus model Edit ~/.config/claude-think/think-toggle.sh and replace claude-opus-4-6 with any model ID.

Add more modes The cycle lives in the case block in think-toggle.sh. Add a state there, its label in statusline.sh, and its context in think-hook.sh.

Uninstall

rm -rf ~/.config/claude-think
rm -f /opt/homebrew/bin/think        # or wherever it was installed
rm -f ~/.claude/state/think-mode.json

Then edit ~/.claude/settings.json and remove:

• the statusLine key (if added by claude-think)
• the UserPromptSubmit entry pointing to think-hook.sh

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Built for Claude Code power users who think before they build.

MIT License