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Webup Buddy Reroll

webup/skills-cc

Lets you reroll your Claude Code /buddy companion to a specific species and rarity, or rename and customize its personality without losing progress. Uses brute force hash matching to find a userID that generates your target combination, supports all 18 species from dragon to chonk and all five rarity tiers. Requires Bun because Claude Code uses xxHash64 internally. Pro and Max subscribers need an OAuth workaround to bypass accountUuid restrictions, which the skill automates with a helper script. Useful if you're tired of your common duck and want a legendary axolotl, or just want to rename your companion without the gacha mechanics. The natural language parsing handles requests in English, Chinese, and Japanese.

skills.sh installs
409
GitHub stars
134
last updated
Aug 21, 2026
View on GitHub

Install

$ npx -y skills add webup/skills-cc --skill webup-buddy-reroll --agent claude-code

Installs into .claude/skills of the current project.

Files

Buddy Reroll

Brute-force a new /buddy companion by finding a userID that hashes to the desired species and rarity.

How It Works

Claude Code generates companions deterministically: hash(userID + SALT) → mulberry32 PRNG → rarity, species, eyes, hat, shiny. Same userID = same companion, always.

To reroll: replace userID in ~/.claude.json, clear companion field, restart.

Critical: Claude Code is Bun-bundled, so Bun.hash() (xxHash64) is the correct hash function. Node.js FNV-1a produces wrong results — the script MUST run under Bun.

Script Directory

Important: All scripts are located in the scripts/ subdirectory of this skill.

Agent Execution Instructions:

  1. Determine this SKILL.md file's directory path as SKILL_DIR
  2. Script path = ${SKILL_DIR}/scripts/<script-name>.mjs
  3. Replace all ${SKILL_DIR} in this document with the actual path
SKILL.md on GitHub

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Details

Repository
github.com/webup/skills-cc
First seen
Jun 3, 2026

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