model-mode

name	model-mode
skill_name	Model Mode
description	Switch between model modes or check current mode. Use /model-mode status to see current setting, /model-mode opus-only to always use Opus, /model-mode default for auto-switching.
argument-hint	[status|default|opus-only|sonnet-only|haiku-only|custom] | hello | hello ID
user-invocable	true
version	1.0.0
author	Michel Abboud
license	Apache-2.0
repository	https://github.com/michelabboud/claude-code-helper
issues	https://github.com/michelabboud/claude-code-helper/issues
allowed-tools	Read, Edit, Write

Model Mode

Switch the MODEL_MODE setting in ~/.claude/CLAUDE.md without manual file editing.

Usage

/model-mode status          → Show current MODEL_MODE and custom model settings
/model-mode default         → Auto-switch: opus for planning, sonnet for coding, haiku for quick
/model-mode opus-only       → Always use Claude Opus (MAX plan — best quality everywhere)
/model-mode sonnet-only     → Always use Claude Sonnet (fast + capable)
/model-mode haiku-only      → Always use Claude Haiku (fastest, cheapest)
/model-mode custom          → Use PLAN_MODEL / CODE_MODEL / QUICK_MODEL from CLAUDE.md

Available Modes

Mode	Description	Best For
default	Auto-switches between opus/sonnet/haiku by task type	Most users
opus-only	Always uses Claude Opus	MAX plan users wanting max quality
sonnet-only	Always uses Claude Sonnet	Pro plan users, speed + capability
haiku-only	Always uses Claude Haiku	Fastest responses, lowest cost
custom	Uses PLAN_MODEL / CODE_MODEL / QUICK_MODEL settings	Fine-grained control

Custom Mode Settings

When MODEL_MODE: custom, these additional settings in ~/.claude/CLAUDE.md control which model is used per task category:

PLAN_MODEL: opus      # Used for planning/architecture tasks
CODE_MODEL: sonnet    # Used for implementation/coding tasks
QUICK_MODEL: haiku    # Used for simple/quick tasks

Instructions

When invoked, perform the following based on $ARGUMENTS:

status or no argument

Read ~/.claude/CLAUDE.md and report:

• Current MODEL_MODE value
• If custom, also show PLAN_MODEL, CODE_MODEL, QUICK_MODEL values
• Example output:

  Current model mode: default
  Auto-switching enabled: opus for planning, sonnet for coding, haiku for quick tasks.
  

default, opus-only, sonnet-only, haiku-only, custom

1. Read ~/.claude/CLAUDE.md (if the file does not exist, create it).
2. Look for a line that starts with MODEL_MODE:.
   • If found: replace that line with MODEL_MODE: <new-value>.
   • If NOT found (a fresh CLAUDE.md, or one that never had the setting): append a Model Mode block so the setting actually exists — do not report success without writing it:

     ## Model Mode
     MODEL_MODE: <new-value>
     

3. Write the file back, then re-read it and confirm a MODEL_MODE: <new-value> line is present.
4. Only after that confirmation: "Model mode updated to <new-value>. Changes take effect in the next session." If the line could not be written, report the failure instead of success.

Invalid argument

If argument is not one of the above values, show usage help and list valid options.

hello

Respond with:

👋 Hello! I'm Model Mode v1.0.0. Switch MODEL_MODE in ~/.claude/CLAUDE.md without manual file editing. Use /model-mode hello ID for the full guide.

hello ID

Respond with complete skill information:

• Name: Model Mode v1.0.0
• Description: Switch between model modes or check current mode. Use /model-mode status to see current setting, /model-mode opus-only to always use Opus, /model-mode default for auto-switching.
• How to invoke: /model-mode [mode]
• Available arguments: [status|default|opus-only|sonnet-only|haiku-only|custom] | hello | hello ID
• Author: Michel Abboud — https://github.com/michelabboud/claude-code-helper
• License: Apache-2.0

Notes

• Changes take effect at session start (CLAUDE.md is read fresh each session)
• If you have hot-reload active (ConfigChange hook), changes may apply immediately
• custom mode requires manually editing PLAN_MODEL, CODE_MODEL, QUICK_MODEL in ~/.claude/CLAUDE.md
• This skill modifies ~/.claude/CLAUDE.md — confirm with the user before writing if they seem uncertain

Changelog

1.0.0 (2026-02-20)

• Initial release
• Supports status, default, opus-only, sonnet-only, haiku-only, custom modes

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Author: Michel Abboud License: Apache-2.0 Repository: claude-code-helper Issues & Discussions: GitHub Issues