tool-diet by mako-code: Claude Code mod code and design

What it does

Draws a pane, toasts
Adds /tool-diet
Hooks session.start
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

Two kinds: a starter modscode writes from the design above, and the lines of the mod's own code that draw it.

Starter (register.tsx)

import type { Register } from 'claude-code'

// Drawn like tool-diet by mako-code (pane, toast), as modscode read it from the mod's code:
// https://modscode.com/gallery/mako-code-tool-diet/
// 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 $.ui.open({ id: 'my-pane', title: "Tool diet" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const length = '…'
    const n = '…'
    const tokens = '…'
    const deferred = '…'
    const groupTitle = '…'
    const plural = '…'
    const fmtCount = '…'
    const fmtCount2 = '…'
    const placeLabel = '…'
    const name = '…'
    const fmtCount3 = '…'
    const placeLabel2 = '…'
    const name2 = '…'
    const fmtCount4 = '…'
    const placeLabel3 = '…'
    const name3 = '…'
    const groupTitle2 = '…'
    const plural2 = '…'
    const fmtCount5 = '…'
    const fmtCount6 = '…'
    const placeLabel4 = '…'
    const name4 = '…'
    const fmtCount7 = '…'
    const placeLabel5 = '…'
    const name5 = '…'
    const fmtCount8 = '…'
    const placeLabel6 = '…'
    const name6 = '…'
    const groupTitle3 = '…'
    const plural3 = '…'
    const fmtCount9 = '…'
    const fmtCount10 = '…'
    const placeLabel7 = '…'
    const name7 = '…'
    const fmtCount11 = '…'
    const placeLabel8 = '…'
    const name8 = '…'
    const fmtCount12 = '…'
    const placeLabel9 = '…'
    const name9 = '…'
    const plural4 = '…'
    return (
      <Box flexDirection="column">
        <Text bold>
          Tools
          {" "}
          <Text dimColor>
            {"· "}
            {length}
            {" · ≈"}
            {`${n}${tokens}`}
            {" tokens of descriptions in the prompt · "}
            {deferred}
            {" behind ToolSearch"}
          </Text>
        </Text>
        <Text dimColor>
          No tools seen yet: they show up once Claude Code lists them for a request.
        </Text>
        <Text color="yellow" wrap="wrap">
          warn
          {" ToolSearch is not in this session's tools: a deferred tool may be out of reach."}
        </Text>
        <Box flexDirection="column" marginTop={1}>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text bold wrap="truncate-end">
                {groupTitle}
                {" "}
                <Text dimColor>
                  {"· "}
                  {plural}
                  {" · ≈"}
                  {fmtCount}
                  {" tokens"}
                </Text>
              </Text>
            </Box>
            <Button label="Defer all" dimColor />
            <Button label="Default all" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount2}
                {" "}
                {placeLabel}
                {" "}
                {name}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount3}
                {" "}
                {placeLabel2}
                {" "}
                {name2}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount4}
                {" "}
                {placeLabel3}
                {" "}
                {name3}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text bold wrap="truncate-end">
                {groupTitle2}
                {" "}
                <Text dimColor>
                  {"· "}
                  {plural2}
                  {" · ≈"}
                  {fmtCount5}
                  {" tokens"}
                </Text>
              </Text>
            </Box>
            <Button label="Defer all" dimColor />
            <Button label="Default all" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount6}
                {" "}
                {placeLabel4}
                {" "}
                {name4}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount7}
                {" "}
                {placeLabel5}
                {" "}
                {name5}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount8}
                {" "}
                {placeLabel6}
                {" "}
                {name6}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text bold wrap="truncate-end">
                {groupTitle3}
                {" "}
                <Text dimColor>
                  {"· "}
                  {plural3}
                  {" · ≈"}
                  {fmtCount9}
                  {" tokens"}
                </Text>
              </Text>
            </Box>
            <Button label="Defer all" dimColor />
            <Button label="Default all" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount10}
                {" "}
                {placeLabel7}
                {" "}
                {name7}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount11}
                {" "}
                {placeLabel8}
                {" "}
                {name8}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
          <Box flexDirection="row" gap={1}>
            <Box flexGrow={1} flexShrink={1}>
              <Text wrap="truncate-end">
                {fmtCount12}
                {" "}
                {placeLabel9}
                {" "}
                {name9}
              </Text>
            </Box>
            <Button label="Undo" dimColor />
            <Button label="Pin" dimColor />
            <Button label="Defer" dimColor />
            <Button label="Default" dimColor />
          </Box>
        </Box>
        <Box marginTop={1} gap={1} flexWrap="wrap">
          <Text color="yellow">
            {plural4}
            {" staged"}
          </Text>
          <Button hotkey="a" variant="primary" label="Apply" />
          <Button hotkey="d" label="Discard" />
          <Button hotkey="r" label="Refresh" />
          <Button hotkey="x" role="dismiss" label="Close" />
        </Box>
        <Text dimColor>
          Tokens: descriptions only (chars / 4); schemas add more. * marks your choice. Deferred tools cost about their name unti…
        </Text>
      </Box>
    )
  })

  on('session.start', async ($, e, next) => {
    const plural = '…'
    await $.ui.toast(`${plural} applied; the next request rewrites the prompt cache once.`)
    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.

mods/tuning/tool-diet/hooks/register.tsx lines 159–262 · Pane

mods/tuning/tool-diet/hooks/register.tsx:159

  on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const warnMark = glyphOf('warn', e.surface === 'terminal' ? glyphMode : 'full')
    const staged = await read($, pending)
    const rows = rowsOf(await read($, described), await read($, listed), await read($, choices), staged)
    const groups = groupsOf(rows)
    const inPrompt = rows.filter(r => r.isDeferred === false).reduce((n, r) => n + r.tokens, 0)
    const deferred = rows.filter(r => r.isDeferred === true).length
    const stagedCount = Object.keys(staged).length
    const hasToolSearch = rows.some(r => r.name === 'ToolSearch')

    return (
      <Box flexDirection="column">
        <Text bold>
          Tools{' '}
          <Text dimColor>
            · {rows.length} · ≈{fmtCount(inPrompt)} tokens of descriptions in the prompt · {deferred} behind ToolSearch
          </Text>
        </Text>
        {rows.length === 0 && <Text dimColor>No tools seen yet: they show up once Claude Code lists them for a request.</Text>}
        {rows.length > 0 && !hasToolSearch && (
          <Text color="yellow" wrap="wrap">
            {warnMark} ToolSearch is not in this session's tools: a deferred tool may be out of reach.
          </Text>
        )}
        {groups.map(g => (
          <Box flexDirection="column" marginTop={1}>
            <Box flexDirection="row" gap={1}>
              <Box flexGrow={1} flexShrink={1}>
                <Text bold wrap="truncate-end">
                  {groupTitle(g.group)}{' '}
                  <Text dimColor>
                    · {plural(g.rows.length, 'tool')} · ≈{fmtCount(g.tokens)} tokens
                  </Text>
                </Text>
              </Box>
              {g.group !== 'built-in' && g.rows.some(r => r.isDeferred !== true && r.pending === undefined) && (
                <Button
                  key={`deferall:${g.group}`}
                  label="Defer all"
                  dimColor
                  onPress={() =>
                    void stage(
                      $,
                      g.rows.filter(r => r.isDeferred !== true && r.pending === undefined).map(r => r.name),
                      'defer',
                    )
                  }
                />
              )}
              {g.rows.some(r => r.saved !== undefined) && (
                <Button
                  key={`defaultall:${g.group}`}
                  label="Default all"
                  dimColor
                  onPress={() =>
                    void stage(
                      $,
                      g.rows.filter(r => r.saved !== undefined).map(r => r.name),
                      'default',
                    )
                  }
                />
              )}
            </Box>
            {g.rows.map(r => (
              <Box flexDirection="row" gap={1}>
                <Box flexGrow={1} flexShrink={1}>
                  <Text wrap="truncate-end" dimColor={r.isDeferred === true && r.pending === undefined}>
                    {fmtCount(r.tokens).padStart(6)} {placeLabel(r).padEnd(10)} {r.name}
                  </Text>
                </Box>
                {r.pending !== undefined && (
                  <Button key={`undo:${r.name}`} label="Undo" dimColor onPress={() => void stage($, [r.name], null)} />
                )}
                {r.pending === undefined && r.isDeferred === true && (
                  <Button key={`pin:${r.name}`} label="Pin" dimColor onPress={() => void stage($, [r.name], 'pin')} />
                )}
                {r.pending === undefined && r.isDeferred !== true && !KEEP.has(r.name) && (
                  <Button key={`defer:${r.name}`} label="Defer" dimColor onPress={() => void stage($, [r.name], 'defer')} />
                )}
                {r.pending === undefined && r.saved !== undefined && (
                  <Button key={`default:${r.name}`} label="Default" dimColor onPress={() => void stage($, [r.name], 'default')} />
                )}
              </Box>
            ))}
          </Box>
        ))}
        <Box marginTop={1} gap={1} flexWrap="wrap">
          {stagedCount > 0 && <Text color="yellow">{plural(stagedCount, 'change')} staged</Text>}
          {stagedCount > 0 && (
            <Button key="apply" hotkey="a" variant="primary" label="Apply" onPress={() => void confirmApply($)} />
          )}
          {stagedCount > 0 && <Button key="discard" hotkey="d" label="Discard" onPress={() => void update($, pending, () => ({}))} />}
          <Button key="refresh" hotkey="r" label="Refresh" onPress={() => void refresh($)} />
          <Button key="close" hotkey="x" role="dismiss" label="Close" onPress={() => void $.ui.close({ id: PANE })} />
        </Box>
        <Text dimColor>
          Tokens: descriptions only (chars / 4); schemas add more. * marks your choice. Deferred tools cost about their
          name until ToolSearch loads them.
        </Text>
      </Box>
    )
  })

Licence text (MIT)

MIT License

Copyright (c) 2026 mako-code

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.

What its code calls

env varsremembers

The design, read from code

Claude — Code

Defer applied; the next request rewrites the prompt cache once.

Ask Claude…

Tool diet

Tools · 3 · ≈312.4 tokens of descriptions in the prompt · Tool diet behind ToolSearchNo tools seen yet: they show up once Claude Code lists them for a request.warn ToolSearch is not in this session's tools: a deferred tool may be out of reach.

Fix login · Defer · ≈3 tokens

Defer allDefault all

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

Fix login · Defer · ≈3 tokens

Defer allDefault all

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

Fix login · Defer · ≈3 tokens

Defer allDefault all

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

3 build build

UndoPinDeferDefault

Defer stagedApply aDiscard dRefresh rClose x

Tokens: descriptions only (chars / 4); schemas add more. * marks your choice. Deferred tools cost about their name unti…

Drawn from the mod's source at the commit read, not from a run: a list is drawn three times, a condition takes its first branch that draws in the desktop app, and a value only the run time knows is shown as a made-up sample (dotted underline) or left out. Colours and type are this site's.

What its code shows

Read from the source at commit ec6ea2383749 on 2026-10-06. 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.mods/tuning/tool-diet/hooks/register.tsx
Parses	Every file parses as TypeScript or JavaScript.3 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 files or environment variables and reaches the network.reaches no network
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

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 the code below (or run claude plugin validate . in its folder), weigh what it reaches, and install the commit you read.

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 mako-code/gobworks

/plugin install tool-diet@gobworks

This installs the marketplace's latest commit, which may not be the one read here (ec6ea2383749). Compare them before you install.

Ask Claude about it

With the modscode connector added, Claude can read this design, what its code reaches and its code, and build on them. Ask it like this:

Read the modscode design "mako-code-tool-diet" with its code and make me a pane like it

Search them from Claude: the MCP connector

tool-diet

What it does

Good points

Code to start from

Starter (register.tsx)

The mod's own code

What its code calls

The design, read from code

What its code shows

Install it

Ask Claude about it

Similar designs