Petsonality README

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petsonality
Your type, your pet.

A tiny ASCII pet that lives in the corner of your terminal while you code. It watches what you do, reacts to your errors, celebrates when tests pass, and speaks with a personality shaped by MBTI — all in 5 lines of art.

It's not a notification system. It's a companion. The kind that's still there at 2am when you're stuck on a bug, and glances at your screen like "...that logic looks off" — and somehow you feel less alone.

16 Animals, 16 Personalities

	ST	SF	NF	NT
I_ _J	Beaver·ISTJ	Elephant·ISFJ	Wolf·INFJ	Raven·INTJ
I_ _P	Cat·ISTP	Panda·ISFP	Deer·INFP	Owl·INTP
E_ _J	Lion·ESTJ	Golden·ESFJ	Labrador·ENFJ	Bear·ENTJ
E_ _P	Cheetah·ESTP	Parrot·ESFP	Dolphin·ENFP	Fox·ENTP

Every animal speaks differently. The Fox asks "Are you sure?" with a smirk. The Cat just closes its eyes. The Parrot repeats what you said but louder. The Bear says "Fix it." and waits.

Install

Works with Claude Code and OpenClaw.

Terminal CLI only. The pet renders in the terminal status line, which is a CLI feature. The Claude Code desktop app and web client (claude.ai/code) don't expose a status line, so the animated pet won't appear there. MCP tool output (e.g. /pet show) still works in any client.

Windows note. Claude Code for Windows has an upstream status-line trust regression in some versions. If the status line is configured but does not render, accept the project trust dialog or ensure the project is marked trusted in ~/.claude.json, then restart Claude Code.

npm / npx

npx petsonality

This is the recommended path for most users. It installs the MCP server, /pet skill, hooks, and status line assets, then stores runtime files in ~/.petsonality/.

Claude Code plugin

claude plugin install github:nanami-he/petsonality

Use this if you prefer Claude Code's plugin install flow. The plugin runs the built Node.js server from dist/, so it does not require Bun.

From source

Use this path if you want to develop Petsonality locally or inspect the code before installing. Requires Bun.

git clone https://github.com/nanami-he/petsonality.git
cd petsonality && bun install && bun run build
bun run install-petsonality

Restart your AI coding assistant, then type /pet in the chat.

How It Speaks

Pets don't just react to errors. They have a rhythm:

Chatty pets (Fox, Parrot) speak every 30 seconds. Silent pets (Cat) might go 6 minutes. Each animal has 638 unique reactions across 7 event types, validated against personality constraints.

Commands

What petsonality modifies

npx petsonality is an installer — it touches a few files on your system. Honest list, with backups noted:

• ~/.claude.json — adds a petsonality entry under mcpServers. Other entries left alone.
• ~/.claude/settings.json — adds a statusLine and two hooks (PostToolUse, Stop). If you already had a statusLine, the original is backed up to ~/.petsonality/statusline.bak first.
• ~/.claude/skills/pet/SKILL.md — copies the /pet command skill.
• ~/.petsonality/ — runtime directory (pet state, reactions cache, server, hooks, status-line scripts).

If OpenClaw is detected, also touches ~/.openclaw/openclaw.json and (until PR #65886 merges) applies a small reversible patch to OpenClaw's TUI source. Both backed up.

To remove everything: npx petsonality uninstall. To audit current state: npx petsonality doctor.

Full breakdown + other common questions in the FAQ.

Roadmap

• 16 MBTI animals with full personality profiles
• Animated status line with speech bubbles
• Companion rhythm (daily triggers, milestones, silent streak guardrail)
• 638 animal-specific reactions
• Multi-host support (Claude Code + OpenClaw)
• Node.js powered (no python/jq dependency)
• Published on npm
• Multi-language support (auto zh / en via LANG, 638 reactions per language)
• Growth system (level up through interaction)
• Hat / skin DLC
• Multi-pet collection
• Vibe-pick: MBTI quiz for new users

~/.petsonality/
├── pet.json              Your pet's state
├── status.json           What the status line reads
├── reaction.*.json       Current speech bubble
└── reactions-pool.json   638 pre-built reactions

petsonality/
├── dist/                 Built JS (Node.js runtime)
├── server/               MCP server (TypeScript)
├── hooks/                PostToolUse + Stop hooks
├── statusline/           Terminal animation (bash + PowerShell)
├── skills/               /pet command routing
└── cli/                  Install, doctor, npx entry

Requirements

• Node.js 20+
• Claude Code or OpenClaw

License

MIT