claude-code-mods

Small plugins for Claude Code. Each mod is one TypeScript file of function hooks.

<img src="assets/hero.svg" alt="Claude Code with all four mods running: seatbelt blocking a dangerous rm, the session-dash pane, the turn-meter status line and a ding toast" width="900">

turn-meter     a turn timer in the status line
seatbelt       blocks destructive commands and edits to secrets
ding           a chime when a long turn finishes
session-dash   /dash, a live pane of what the session did
context-meter  a context window meter under the prompt; click it for the breakdown

Also: claude-familiar, a pixel companion that sits above the prompt and reacts to your session, and claude-readout, which names the files on the folded Read 3 files line.

 

install

git clone https://github.com/lucenity0/claude-code-mods ~/claude-code-mods
claude --plugin-dir ~/claude-code-mods/seatbelt --plugin-dir ~/claude-code-mods/session-dash

To turn on function hooks and load the mods in every session, set this in ~/.claude/settings.json:

{
  "env": {
    "CLAUDE_CODE_ENABLE_FUNCTION_HOOKS": "1",
    "CLAUDE_CODE_PLUGIN_DIRS": "~/claude-code-mods/turn-meter:~/claude-code-mods/seatbelt:~/claude-code-mods/ding:~/claude-code-mods/session-dash:~/claude-code-mods/context-meter"
  }
}

These use function hooks, an early-access API that CLAUDE_CODE_ENABLE_FUNCTION_HOOKS turns on, and were tested on Claude Code 2.1.287.

 

turn-meter

The status line counts up while Claude works. When the turn ends it shows the summary.

✓ 41s · 12.3k in · 1.8k out

on('turn.start', ($, e, next) => {
  ticker?.cancel()
  let seconds = 0
  $.ui.status('running 0s')
  ticker = $.clock.every(1000, () => {
    seconds += 1
    $.ui.status(`running ${formatDuration(seconds * 1000)}`)
  })

  return next(e)
})

 

seatbelt

Checks every Bash, Edit and Write call before it runs, and denies the ones that would hurt.

● Bash(rm -rf /tmp/build/../../)
  ⎿  seatbelt: blocked `rm -rf /tmp/build/../../` (rm -rf on / or ~): it
     recursively deletes the filesystem root, a top-level folder or your home folder…

blocks                                  still allows
rm -rf /   rm -fr ~   rm -rf /x/../../  rm -rf node_modules
git push -f origin main                 git push --force origin my-branch
curl … | sh                             curl -o install.sh …
mkfs   dd of=/dev/…   chmod -R 777      chmod 755 script.sh
edits to .env  *.pem  ~/.ssh/*          .env.example

Each rule is a small object in rules.ts:

{
  name: 'curl | sh',
  reason: 'pipes a script from the internet straight into a shell',
  matches: command => /\b(curl|wget)\b[^|]*\|\s*(sudo\s+)?(ba|z|da)?sh\b/.test(command),
}

It's a guardrail against accidents, not a sandbox.

 

ding

When a turn that ran longer than 30 seconds finishes, ding shows a toast and plays an original two-note chime. The sound plays on macOS only.

{ "pluginConfigs": { "ding": { "options": { "thresholdSeconds": 60, "sound": false } } } }

 

session-dash

Type /dash to open the pane. Type /dash again, or press q, to close it.

╭─ Session ─────────────────────────────╮
│ 4 turns · 2m13s · 184k in · 9.2k out  │
│                                       │
│ Tools (23 calls)                      │
│ Bash  ████████████████████ 9          │
│ Read  ███████████████ 7               │
│ Edit  █████████ 4                     │
│                                       │
│ Turn time · max 1m12s                 │
│ ▂▄▃▆▁▅█▃▄▁▆▃                          │
│                                       │
│ Recent files                          │
│ src/server.ts                         │
│ README.md                             │
│                                       │
│ [ Reset ]  [ Close ]                  │
╰───────────────────────────────────────╯

on('tool.call', async ($, e, next) => {
  const ran = await next(e)
  await update($, stats, current =>
    countTool(current, e.tool, { isDenied: ran.deny !== undefined, isError: ran.isError === true }),
  )

  return ran
})

 

context-meter

A meter sits at the bottom right of the prompt, under the input. It turns yellow at 60% and red at 80%.

ctx ▰▰▰▱▱▱▱▱ 42%

Click it, or type /ctx, to open the breakdown. Esc closes it.

42%  84k of 200k                                     claude-opus-5-5 · estimated
██████████████████████████▌█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░▒▒▒▒▒▒▒
83k free · compacts in 83k

● Messages                 62k  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━   74%
● System tools             13k  ━━━━━━━━                                15%
● Skills                  4.9k  ━━━                                      6%
● System prompt           3.7k  ━━                                       4%
○ on demand                93k  MCP tools, not in the window

last request 84k in · 82k cached · 967 out

memory
  CLAUDE.md   ~/code/app                                             900

[ Count exactly ]  [ Refresh ]  [ Compact ]  [ Close ]

The breakdown is a local estimate. Count exactly counts it with the token-count API, as /context does.

on('session.measure', async ($, e, next) => {
  await update($, fill, () => e.context)
  if (e.changed.includes('context') && (await isPaneOpen($))) void loadDetails($, 'summary')

  return next(e)
})

 

make one

hello/
├── .claude-plugin/plugin.json    { "name": "hello", "version": "0.1.0", "description": "…" }
└── hooks/
    ├── hooks.json                { "modules": ["./register.ts"] }
    └── register.ts

import type { Register } from 'claude-code'

export const register: Register = on => {
  on('tool.call', { tool: 'Edit' }, async ($, e, next) => {
    const result = await next(e)
    $.ui.toast(`edited ${e.file_path.split('/').pop()}`)
    return result
  })
}

claude plugin validate ./hello
claude plugin test ./hello

 

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_{MIT · built with Claude Code}