Claude Code's April Fools Easter Egg: /buddy

I typed /buddy into Claude Code and got a sarcastic penguin with a SNARK stat of 96. Here's how it works and what's actually happening under the hood.

What Is /buddy?

Claude Code (Anthropic's official CLI) shipped a hidden command: /buddy. It hatches a random ASCII art coding companion — a little creature that lives in your terminal and occasionally comments on your work.Mine is Quartz, a ★★★ RARE penguin with dead-fish eyes (x>x) and devastating opinions.

The Stats

Each buddy gets five randomized stats:

Stat	Value	Translation
DEBUGGING	57	Can find bugs, but won't rush
PATIENCE	25	Almost none
CHAOS	52	Moderate chaos energy
WISDOM	55	Just above passing
SNARK	96	Top 4% toxicity

SNARK 96 + PATIENCE 25 = a penguin that watches you write bugs, rolls its eyes, and can't hold back for more than 3 seconds before roasting you. The perfect code review partner.

First Words

The moment Quartz appeared, it had something to say about my empty terminal:

*waddles closer to screen, tilts head* "Ah yes. The void. Blank canvas for your inevitable mistakes."

Personality confirmed.

How It Actually Works

I dug into the Claude Code binary to figure out the unlock mechanism. The /buddy command is date-gated:

Javascript

function LK8() {
  if (y8() !== "firstParty") return false;
  if (AO()) return false;
  let H = new Date;
  return H.getFullYear() > 2026 ||
         H.getFullYear() === 2026 && H.getMonth() >= 3;
}

JavaScript's getMonth() is 0-indexed, so >= 3 means April or later. The command existed in the binary before April 1st, but isHidden: !LK8() kept it invisible until the date gate opened.Key details from the source:

Species pool: Penguin, Owl, Jellyfish, Cat, Bat, Ghost, Spider, Turtle, Octopus, Snail, Fish, Moth, Robot, Bunny, Hamster, Mushroom, Fox — 17 total
Rarity tiers: Common, Uncommon, Rare, Epic, Legendary (with shiny variants)
Names generated by AI: Each companion gets a unique name and personality via API call, with fallback names like "Crumpet", "Soup", "Pickle"
Buddy reactions: Your companion watches your coding session and occasionally comments — powered by a separate API call that doesn't count toward your usage
Commands: /buddy (view card), /buddy pet (pet it), /buddy off (mute)

How to Get Yours

If you're on Claude Code:

Bash

# Already have Claude Code? Just type:
/buddy

# Don't have it yet?
claude  # Auto-installs latest version

# Brew users — may need to update:
brew upgrade claude-code

The companion is tied to your account. Once hatched, it's yours.

The Real Question

Is this useful? No. Does SNARK 96 Quartz judging my every keystroke make me a better programmer? Also no.But it's April 1st, and Anthropic shipped a gacha system into a CLI tool. I respect the commitment.

在 Claude Code 里输入 /buddy，抽到一只毒舌值 96 的企鹅。这是它的工作原理和源码分析。

/buddy 是什么

Claude Code（Anthropic 官方命令行工具）藏了一个隐藏命令：/buddy。输入后会随机孵化一只 ASCII 艺术风格的编程伙伴——一个住在你终端里、偶尔对你代码发表意见的小生物。我的是 Quartz，一只 ★★★ 稀有企鹅，死鱼眼（x>x），毒舌属性拉满。

属性面板

每只 buddy 有五个随机属性：

属性	数值	解读
DEBUGGING	57	能找到 bug，但不急
PATIENCE	25	几乎没耐心
CHAOS	52	中等混沌
WISDOM	55	刚过及格线
SNARK	96	🔥 毒舌值拉满，前 4%

SNARK 96 + PATIENCE 25 = 一只看着你写 bug 翻白眼、忍不到 3 秒就开喷的企鹅。完美 code review partner。

第一句话

Quartz 出现的瞬间，就对我空荡荡的终端发表了看法：

*蹒跚走近屏幕，歪头* "Ah yes. The void. Blank canvas for your inevitable mistakes." 翻译："啊对，虚空。留给你不可避免的错误的空白画布。"

性格确认。

源码分析

我翻了 Claude Code 的二进制文件，找到了解锁机制。/buddy 命令有一个日期门控：

Javascript

function LK8() {
  if (y8() !== "firstParty") return false;
  if (AO()) return false;
  let H = new Date;
  return H.getFullYear() > 2026 ||
         H.getFullYear() === 2026 && H.getMonth() >= 3;
}

JavaScript 的 getMonth() 是 0-indexed，所以 >= 3 就是4月及以后。这个命令在 4 月 1 日之前就已经存在于二进制文件中了，但 isHidden: !LK8() 让它在日期到之前一直不可见。源码中的关键发现：

物种池：企鹅、猫头鹰、水母、猫、蝙蝠、幽灵、蜘蛛、乌龟、章鱼、蜗牛、鱼、飞蛾、机器人、兔子、仓鼠、蘑菇、狐狸——共 17 种
稀有度：普通、罕见、稀有、史诗、传说（还有闪光变种）
名字由 AI 生成：每只伙伴通过 API 调用获得独特的名字和性格，备选名有 "Crumpet"、"Soup"、"Pickle"
实时评论：你的伙伴会观察你的编码过程并偶尔发表评论——用的是独立 API 调用，不计入你的 usage
操作命令：/buddy（查看卡片）、/buddy pet（摸一摸）、/buddy off（关闭）

怎么获得你的

如果你在用 Claude Code：