ModsCode / Claude Code Mods / Ranking / coding-pet
coding-pet
A pet that hatches from an egg and grows on the achievements you unlock while coding with Claude Code
What it does
- Draws a pane, the status line, toasts
- Adds /pet
- Watches tool calls and can refuse them
- Hooks prompt.submit, session.start, turn.complete, ui.close
- Keeps its own state between turns
Good points
- No network calls
- Starts no processes
- Written in TypeScript
- Has a desktop-specific branch
Code to start from
A starter ModsCode writes from the drawing it read, and the mod's own lines that draw, where there are any.
Starter (register.tsx)
import type { Register } from 'claude-code'
// Drawn like coding-pet by ytskmt14 (pane, status, toast), as ModsCode read it from the mod's code:
// https://modscode.com/claude-mods/mods/ytskmt14-coding-pet/
// Written by ModsCode from that reading, not copied from the mod: use it as you like.
// Each value below stands for one the mod works out at run time; put in your own.
export const register: Register = on => {
// the pane: open it with $.ui.open({ id: 'my-pane', title: "Pet" })
on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
const { Box, Text, Button } = $.ui.resolve(e)
const i = '…'
const name = '…'
const label = '…'
const drawPet = '…'
const ageDays = '…'
const getMonth = '…'
const getDate = '…'
const xp = '…'
const length = '…'
const tail = '…'
const tail2 = '…'
const tail3 = '…'
const nowLine = '…'
const toTimeString = '…'
const text = '…'
const text2 = '…'
const text3 = '…'
const title = '…'
const hint = '…'
const toLocaleDateString = '…'
const title2 = '…'
const title3 = '…'
const title4 = '…'
const detail = '…'
const title5 = '…'
const detail2 = '…'
const title6 = '…'
const detail3 = '…'
const turns = '…'
const toolTotal = '…'
const commits = '…'
const costUsd = '…'
const streakDays = '…'
return (
<Box flexDirection="column">
<Text color="magenta">
[プレビュー中] /pet preview off で戻る
</Text>
<Text color="red">
[保存データを読めないため、変更を保存していません。新しいバージョンのペットで保存された可能性があります]
</Text>
<Box flexDirection="row" flexWrap="wrap" columnGap={1}>
<Button hotkey={`${i}`} variant="primary" />
<Button hotkey={`${i}`} variant="primary" />
<Button hotkey={`${i}`} variant="primary" />
</Box>
<Box flexDirection="column" borderStyle="round" borderColor="yellow" paddingX={1}>
<Box flexDirection="row" justifyContent="space-between">
<Text bold>
{name}
</Text>
<Text dimColor>
{`???・${label}`}
</Text>
</Box>
<Box flexDirection="column" overflow="hidden">
<Box flexDirection="column">
<Box flexDirection="row" gap={2}>
<Box flexShrink={0}>
<Text bold color="yellow">
{drawPet}
</Text>
</Box>
<Box flexDirection="column">
<Text>
{`年齢 ${ageDays}日目`}
</Text>
<Text>
{`誕生日 ${getMonth}1/${getDate}`}
</Text>
<Text>
{`XP ${xp}`}
</Text>
<Text dimColor>
{`実績 ${length}/${length}`}
</Text>
</Box>
</Box>
<Text dimColor>
────────
</Text>
<Box flexDirection="row">
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={8}>
<Text dimColor>
おなか
</Text>
</Box>
<Box flexShrink={0}>
<Text color="yellow">
■■■■■■■■□□□□□□□□
</Text>
</Box>
<Box flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{tail}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={8}>
<Text dimColor>
きげん
</Text>
</Box>
<Box flexShrink={0}>
<Text color="red">
■■■■■■■■□□□□□□□□
</Text>
</Box>
<Box flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{tail2}
</Text>
</Box>
</Box>
</Box>
<Box flexDirection="row">
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={8}>
<Text dimColor>
なかよし
</Text>
</Box>
<Box flexShrink={0}>
<Text color="magenta">
■■■■■■■■□□□□□□□□
</Text>
</Box>
<Box flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{tail3}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={8}>
<Text dimColor>
成長
</Text>
</Box>
<Box flexShrink={0}>
<Text color="green">
■■■■■■■■□□□□□□□□
</Text>
</Box>
<Box flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
MAX
</Text>
</Box>
</Box>
</Box>
<Box flexDirection="row" columnGap={1}>
<Button hotkey={`${i}`}>
{`${label} -`}
</Button>
<Button hotkey={`${i}`}>
{`${label} -`}
</Button>
<Button hotkey={`${i}`}>
{`${label} -`}
</Button>
</Box>
<Text dimColor>
────────
</Text>
<Text wrap="truncate-end">
{`いま: ${nowLine}`}
</Text>
<Text dimColor>
きょうのできごと
</Text>
<Text dimColor>
{" まだなにもない"}
</Text>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={7}>
<Text dimColor>
{` ${toTimeString}`}
</Text>
</Box>
<Text wrap="truncate-end">
{text}
</Text>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={7}>
<Text dimColor>
{` ${toTimeString}`}
</Text>
</Box>
<Text wrap="truncate-end">
{text2}
</Text>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={7}>
<Text dimColor>
{` ${toTimeString}`}
</Text>
</Box>
<Text wrap="truncate-end">
{text3}
</Text>
</Box>
<Box>
<Text>
{" "}
</Text>
</Box>
</Box>
<Box flexDirection="column">
<Text bold>
{`実績 ${length}/${length}`}
</Text>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title}
</Text>
</Box>
<Box flexShrink={0} width={7} justifyContent="flex-end">
<Text dimColor>
{`+${xp}XP`}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{`${hint}(${toLocaleDateString})`}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title2}
</Text>
</Box>
<Box flexShrink={0} width={7} justifyContent="flex-end">
<Text dimColor>
{`+${xp}XP`}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{`${hint}(${toLocaleDateString})`}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title3}
</Text>
</Box>
<Box flexShrink={0} width={7} justifyContent="flex-end">
<Text dimColor>
{`+${xp}XP`}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{`${hint}(${toLocaleDateString})`}
</Text>
</Box>
</Box>
</Box>
<Box flexDirection="column">
<Text bold>
できること
</Text>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title4}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{detail}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title5}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{detail2}
</Text>
</Box>
</Box>
<Box flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color="green">
✓
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text wrap="truncate-end">
{title6}
</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{detail3}
</Text>
</Box>
</Box>
</Box>
<Box flexDirection="column">
<Text bold>
せってい
</Text>
<Box flexDirection="row" flexWrap="wrap" columnGap={1}>
<Button hotkey="s">
効果音 ON
</Button>
<Button hotkey="a">
AIおしゃべり ON
</Button>
</Box>
<Text dimColor>
{"名前を変える: /pet name <名前> 種族を変える: /pet switch <種族>"}
</Text>
<Text dimColor>
くわしくは /pet help
</Text>
<Box marginTop={1}>
<Text dimColor wrap="wrap">
{`きろく: ${turns}ターン ・ ツール${toolTotal}回 ・ コミット${commits}回 ・ 累計$${costUsd} ・ ${streakDays}日連続`}
</Text>
</Box>
</Box>
</Box>
</Box>
</Box>
)
})
on('session.start', async ($, e, next) => {
const snacks = '…'
const title = '…'
const xp = '…'
const label = '…'
const name = '…'
await $.ui.status(`🍫 うまい棒${snacks}本分(プレビュー)`)
await $.ui.toast(`🏆 実績解除: ${title} (+${xp} XP)`)
await $.ui.toast(`🐣 卵がかえった! ${label}の${name}が生まれた`)
return next(e)
})
}
The mod's own code
Shown under the mod's licence (MIT); its text is below. Keep the notice if you copy these lines.
plugins/coding-pet/hooks/register.tsx lines 618–777 · Pane
on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
const { Box, Text, Button } = $.ui.resolve(e)
// a pane already open when the module reloaded is open too: drawing it says so
if (!(await read($, paneOpen))) void update($, paneOpen, () => true).catch(() => {})
const save = await shownSave($)
if (save === null) return <Text dimColor>Loading…</Text>
const now = await $.clock.now()
const { pet, settings } = save
const stage = stageIndex(pet.xp)
const goal = nextStageXp(pet.xp)
const from = STAGES[stage]!.xp
const isPreview = (await read($, preview)) !== null
const tick = await read($, frame)
const shown = await read($, tab)
const said = await read($, speech)
const told = await read($, notice)
const isUnreadable = await read($, unreadable)
const width = Math.max(20, e.props.bodyColumns - 4)
const rule = <Text dimColor>{'─'.repeat(width)}</Text>
const gauge = (value: number, cells = 5) => {
const full = Math.round((clamp(value) / 100) * cells)
return '■'.repeat(full) + '□'.repeat(cells - full)
}
const growth = goal === null ? 100 : ((pet.xp - from) / (goal - from)) * 100
const born = new Date(pet.bornAt)
const picture =
e.surface === 'terminal'
? (() => {
const { Raster } = $.ui.resolve(e)
return <Raster key="pet-pane" {...toCells(compose(pet.species, stageOf(pet.xp).id, moodOf(pet, now), tick))} />
})()
: <Text bold color="yellow">{drawPet(pet, now, tick)}</Text>
const stat = (label: string, value: number, color: string, tail = '') => (
<Box flexDirection="row" gap={1} width={Math.floor(width / 2)}>
<Box flexShrink={0} width={8}>
<Text dimColor>{label}</Text>
</Box>
<Box flexShrink={0}>
<Text color={color}>{gauge(value)}</Text>
</Box>
{tail !== '' && (
<Box flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{tail}
</Text>
</Box>
)}
</Box>
)
const isEgg = stage === 0 || pet.species === null
// the newer of the pet's words and the mod's own message; neither, how the pet seems
const fresh = (m: { at: number } | null) => m !== null && now - m.at < SPEECH_MS
const nowLine =
fresh(told) && (!fresh(said) || told!.at >= said!.at)
? told!.text
: fresh(said)
? `「${said!.text}」`
: describe(save, now)
const today = localDay(now)
const diary = save.diary.filter(d => localDay(d.at) === today).slice(-DIARY_ROWS).reverse()
const home = (
<Box flexDirection="column">
<Box flexDirection="row" gap={2}>
<Box flexShrink={0}>{picture}</Box>
<Box flexDirection="column">
<Text>{`年齢 ${ageDays(save, now)}日目`}</Text>
<Text>{`誕生日 ${born.getMonth() + 1}/${born.getDate()}`}</Text>
<Text>{goal === null ? `XP ${pet.xp}` : `XP ${pet.xp} / ${goal}`}</Text>
<Text dimColor>{`実績 ${Object.keys(save.unlocked).length}/${ACHIEVEMENTS.length}`}</Text>
</Box>
</Box>
{rule}
<Box flexDirection="row">
{stat('おなか', currentFullness(pet, now), 'yellow')}
{stat('きげん', pet.mood, 'red')}
</Box>
<Box flexDirection="row">
{stat('なかよし', pet.affection, 'magenta')}
{stat('成長', growth, 'green', goal === null ? 'MAX' : `→${STAGES[stage + 1]!.label}`)}
</Box>
<Box flexDirection="row" columnGap={1}>
{(Object.keys(CARE) as CareKind[]).map((kind, i) => {
const left = careLeft(save, kind, now)
const isOpen = !isPreview && !(isEgg && kind !== 'pat') && left > 0
return (
<Button
key={`care-${kind}`}
hotkey={String(i + 1)}
dimColor={!isOpen}
onPress={() => {
if (isPreview) void tell($, 'プレビュー中はお世話できません(/pet preview off で戻る)').catch(() => {})
else void serial({ kind: 'care', care: kind }, $).catch(() => {})
}}
>
{isEgg && kind !== 'pat' ? `${CARE[kind].label} -` : `${CARE[kind].label} ${left}/${CARE[kind].perDay}`}
</Button>
)
})}
</Box>
{rule}
<Text wrap="truncate-end">{`いま: ${nowLine}`}</Text>
<Text dimColor>きょうのできごと</Text>
{diary.length === 0 && <Text dimColor>{' まだなにもない'}</Text>}
{diary.map((d, i) => (
<Box key={`diary-${i}`} flexDirection="row" gap={1}>
<Box flexShrink={0} width={7}>
<Text dimColor>{` ${new Date(d.at).toTimeString().slice(0, 5)}`}</Text>
</Box>
<Text wrap="truncate-end">{d.text}</Text>
</Box>
))}
{Array.from({ length: Math.max(0, DIARY_ROWS - Math.max(1, diary.length)) }, (_, i) => (
<Box key={`diary-pad-${i}`}>
<Text>{' '}</Text>
</Box>
))}
</Box>
)
const achievements = (
<Box flexDirection="column">
<Text bold>{`実績 ${Object.keys(save.unlocked).length}/${ACHIEVEMENTS.length}`}</Text>
{ACHIEVEMENTS.map(a => {
const when = save.unlocked[a.id]
return (
<Box key={`ach-${a.id}`} flexDirection="row" gap={1}>
<Box flexShrink={0} width={2}>
<Text color={when ? 'green' : undefined} dimColor={!when}>
{when ? '✓' : '-'}
</Text>
</Box>
<Box flexShrink={0} width={18}>
<Text bold={!!when} dimColor={!when} wrap="truncate-end">
{a.title}
</Text>
</Box>
<Box flexShrink={0} width={7} justifyContent="flex-end">
<Text dimColor>{`+${a.xp}XP`}</Text>
</Box>
<Box flexGrow={1} flexShrink={1} minWidth={0}>
<Text dimColor wrap="truncate-end">
{when ? `${a.hint}(${new Date(when).toLocaleDateString()})` : '???'}
</Text>
</Box>
</Box>
)
})}
</Box>
)
const abilities = (
<Box flexDirection="column">
<Text bold>できること</Text>
{ABILITIES.map(ab => {
const isOpen = hasAbility(save, ab.id)
const needs = STAGES.find(st => st.id === ab.stage)!Licence text (MIT)
MIT License Copyright (c) 2026 ytskmt14 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
How to build this: Pane (panel), Deny a tool call
What its code calls
drives Claudetool callsremembers
What its code shows
Read from the source at commit 197f0cd33fc5 on 2026-10-11. The first group decides whether a mod is listed; the rest is for you to weigh. A later commit is not read until the next crawl.
| Decides the listing: code you can check | |
|---|---|
| Entry read | Every module hooks/hooks.json names was read.plugins/coding-pet/hooks/register.tsx |
| Parses | Every file parses as TypeScript or JavaScript.5 files parsed |
| All its code is in the mod | Every import is a file of the mod or the engine's own module; no packages, no require.all its code is in the mod |
| Readable | No minified lines, no eval or new Function, no import of a computed path, no encoded blobs.no minified code, no eval, no encoded blobs |
| Calls in the open | Network and programs are reached as $.http.fetch and $.process.run in place, never passed around.every call outside goes through $ in the open |
| For you to weigh before installing | |
| Where it draws | The terminal, the desktop app, both, or nothing (hooks only: a guard or a prompt rewriter), as its code says. Shown, never a reason to leave a mod out.draws in the terminal and the desktop app, the same in both |
| Install line | Whether its repository's own .claude-plugin/marketplace.json lists it, so it installs from that marketplace with the lines on its page.listed in its repository's .claude-plugin/marketplace.json: installs from there |
| Programs on Windows | Whether every program it starts through $.process exists on Windows (tail, date, open, osascript, /usr/… do not).runs no program a Windows PC lacks |
| Network | Whether every fetch names its https host in the code.no network |
| Programs | Whether every program it starts is named in the code and is not a shell, an interpreter or a network tool.starts no programs |
| Reads and sends | Whether it both reads something of yours (files, environment variables, the transcript, settings) and reaches outside (the network, an MCP server, another session, telemetry).reaches nothing outside |
| Keys in the source | Whether the source holds what looks like an API key or a private key.no keys in the source |
| Licence | An open licence (MIT, Apache-2.0, BSD, ISC, Unlicense, 0BSD, CC0) with its text lets ModsCode show its code; otherwise the code is linked.MIT |
| Settings hooks | Hooks declared in hooks/hooks.json or plugin.json beside the module: a command (a shell when it has no args), an HTTP request, an MCP tool or a model prompt at an event. They run outside $.no settings hooks: its function hooks alone |
| Servers it ships | MCP servers (a program, or a URL; a headersHelper is a shell command; a .mcpb bundle is unpacked at run time), LSP servers, monitors (a shell command for the whole session) and bin/ (on the PATH of the Bash tool).ships no MCP or LSP server, no monitor, no bin/ |
| Skills, commands, agents | What its Markdown declares beyond text: allowed-tools granted for the turn, hooks added when a skill is invoked, a command run before Claude reads the skill.no skills, commands, agents or workflows |
| Tools and MCP | Whether every tool it calls through $.tool.call and $.mcp.call is named in the code, and none is a shell (Bash through the tool runs a shell without $.process).calls no tool, MCP server or command |
| Asks of the model | Completions it runs ($.model.complete, fork, classify), subagents it spawns, prompts it submits as you, and the tools, commands and agents it adds.model.complete, adds command pet |
| Events it hooks | By what a hook there can do: gates (refuse a tool call, a prompt, a setting, another plugin), shapes (what the model reads: the system prompt, tool descriptions, each request), reads (your input, the events of the settings hooks, every event with *), and the rest.gates: command.run (pet), prompt.submit, tool.call · also: session.start, ui.close, turn.complete, ui.render (Pane) · timers: clock.after, clock.every |
| Reads, by name | The environment variables and files it names, and whether it reads the transcript, settings.json, the prompt box or the mouse selection.reads no files, environment variables, settings or transcript |
| Writes, by name | The files and environment variables it names, and whether it changes settings, the prompt box, the clipboard, the conversation (a row the model reads) or another session.writes no files, environment variables, settings or conversation rows |
This is a reading of the code text, not a security review: it does not run the mod, and it cannot see what a program the mod starts does. The check before installing is yours. How mods are chosen
Install it
Check it yourself before you install it. Mods run unsandboxed, with your permissions, and ModsCode does not vouch for what this code does. Read its code (or run claude plugin validate . in its folder), weigh what it reaches, and install the commit you read.
From its marketplace
Its repository is its marketplace. Add that marketplace (in the terminal with these commands, or in the desktop app's plugin settings) and install the mod from it:
/plugin marketplace add ytskmt14/coding-pet/plugin install coding-pet@coding-pet/reload-pluginsThis installs the marketplace's latest commit, which may not be the one read here (197f0cd33fc5). Compare them before you install. /reload-plugins loads it into a session that is already open.
Try the commit ModsCode read
No marketplace needed. In a terminal, clone the repository, check out the commit read, validate the mod, and load it for one session:
git clone https://github.com/ytskmt14/coding-petgit -C coding-pet checkout 197f0cd33fc5a015195150e031b84e184f360a1dclaude plugin validate coding-pet/plugins/coding-petclaude --plugin-dir coding-pet/plugins/coding-petThe validate line lists the events the mod hooks and what it asks Claude Code to do, without running it. The last line loads the mod for this session only and writes nothing to your settings. If the author has rewritten history, the commit may no longer exist.
Ask Claude about it
With the ModsCode connector added, Claude can read this mod's code and what it reaches, and build on them. Ask it like this:
Read the ModsCode mod "ytskmt14-coding-pet" with its code and make me one like itSearch them from Claude: the MCP connector
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Badge for your README
If this is your mod, paste this into your README. It links to this page.
[](https://modscode.com/claude-mods/mods/ytskmt14-coding-pet/)