How to Reroll Your Claude Code Buddy

Prerequisites

• Claude Code v2.1.89 or later
• Access to your terminal
• The reroll simulator to find a userID you like

Understanding the ID Priority

Claude Code picks the buddy seed using this priority:

accountUuid  →  userID  →  "anon"
(highest)       (fallback)  (default)

If accountUuid exists in your config, it overrides userID. To use a custom userID for your buddy, you must remove accountUuid.

Method 1: Direct userID Edit (Simplest)

Best if you just want to change your buddy quickly.

1. Back up your config

   cp ~/.claude.json ~/.claude.json.bak

2. Find a userID you like

   Use the reroll simulator to find a buddy you want, then copy the userID it gives you.

3. Remove accountUuid and set new userID

   python3 -c "
   import json
   with open('$HOME/.claude.json', 'r') as f:
       data = json.load(f)
   # Remove accountUuid so userID takes priority
   if 'oauthAccount' in data and 'accountUuid' in data['oauthAccount']:
       del data['oauthAccount']['accountUuid']
   # Set your desired userID
   data['userID'] = 'PASTE_YOUR_DESIRED_USERID_HERE'
   with open('$HOME/.claude.json', 'w') as f:
       json.dump(data, f, indent=2)
   print('Done!')
   "

4. Launch Claude Code and type /buddy

   Your new buddy should appear. The name and personality are generated by AI on first hatch, so they will be unique.

Method 2: OAuth Token Method

Uses the OAuth token environment variable to prevent accountUuid from being written.

1. Get your OAuth token

   claude setup-token

2. Reset config to minimal state

   cp ~/.claude.json ~/.claude.json.bak
   echo '{"hasCompletedOnboarding": true, "theme": "dark"}' > ~/.claude.json

3. Set token and launch Claude

   export CLAUDE_CODE_OAUTH_TOKEN="your-token-here"
   claude

   Exit immediately — do NOT use /buddy yet.

4. Set your desired userID in the generated config, then relaunch and use /buddy

Method 3: cc-buddy CLI Tool

An interactive npm tool that wraps the entire process.

npx cc-buddy

Select option 1 (Search) to find your desired buddy, or option 3 to customize name/personality.