modscode JA

modscode / Gallery / cache-countdown

cache-countdown

Prompt-cache meter above the input box: hit %, read/wrote/new tokens, a TTL countdown and advice; cache-expiry toasts and context-window alerts. /cache opens a detail pane; /cache setup walks through every setting.

Code you can checkTerminal + desktopPaneBandStatus lineToastBoxButtonInputText

What it does

  • Draws a pane, a band above the prompt, toasts
  • Hooks session.end, session.start, turn.step, 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

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)

register.tsx
import type { Register } from 'claude-code'

// Drawn like cache-countdown by jmac122 (pane, band, status, toast), as modscode read it from the mod's code:
// https://modscode.com/gallery/jmac122-cache-countdown/
// 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 $.ui.open({ id: 'my-pane', title: "cache setup" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const ttl = '…'
    const source = '…'
    const fmtCountdown = '…'
    const life = '…'
    const ICON = '…'
    const text = '…'
    const model = '…'
    const fmtTokens = '…'
    const lastPct = '…'
    const sp = '…'
    const sp2 = '…'
    const sp3 = '…'
    const sp4 = '…'
    const sp5 = '…'
    const pct = '…'
    const sp6 = '…'
    const sp7 = '…'
    const sp8 = '…'
    const sp9 = '…'
    const sp10 = '…'
    const sp11 = '…'
    const sp12 = '…'
    const sp13 = '…'
    const sp14 = '…'
    const sp15 = '…'
    const sp16 = '…'
    const sp17 = '…'
    const sp18 = '…'
    const sp19 = '…'
    return (
      <Box flexDirection="column">
        <Box flexDirection="row" columnGap={1}>
          <Text bold color="cyan">
            PROMPT CACHE
          </Text>
          <Text dimColor wrap="truncate-end">
            {`· ${ttl} lifetime (${source})`}
          </Text>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            {`⏱ ${fmtCountdown} left`}
          </Text>
          <Box flexDirection="row" columnGap={1}>
            <Box flexDirection="row" height={1} flexShrink={0}>
              <Box height={1} flexShrink={0} />
              <Box height={1} flexShrink={0} />
              <Box height={1} flexShrink={0} />
            </Box>
            <Text dimColor>
              {`${life}%`}
            </Text>
          </Box>
        </Box>
        <Box marginTop={1} flexDirection="column">
          <Text bold>
            {`${ICON} ${text}`}
          </Text>
          <Text dimColor>
            {`${model} · prompt ${fmtTokens} tokens`}
          </Text>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text dimColor>
            last request
          </Text>
          <Box flexDirection="row" columnGap={1}>
            <Box flexDirection="row" height={1} flexShrink={0}>
              <Box height={1} flexShrink={0} />
              <Box height={1} flexShrink={0} />
              <Box height={1} flexShrink={0} />
            </Box>
            <Text bold>
              {`${lastPct}% hit`}
            </Text>
          </Box>
          <Box flexDirection="row" columnGap={2}>
            <Text color="green">
              {`■ read ${fmtTokens}`}
            </Text>
            <Text color="yellow">
              {`■ wrote ${fmtTokens}`}
            </Text>
            <Text color="cyan">
              {`■ new ${fmtTokens}`}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Box flexDirection="row" columnGap={1}>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                turn
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                steps
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="green">
                read
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="yellow">
                wrote
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                new
              </Text>
            </Box>
            <Box width="4" flexShrink={0} justifyContent="flex-end">
              <Text color="magenta">
                hit
              </Text>
            </Box>
          </Box>
          <Text dimColor>
            no requests yet
          </Text>
          <Box flexDirection="row" columnGap={1}>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text>
                {sp2}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="green">
                {sp3}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="yellow">
                {sp4}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp5}
              </Text>
            </Box>
            <Box width="4" flexShrink={0} justifyContent="flex-end">
              <Text>
                {`${pct}%`}
              </Text>
            </Box>
          </Box>
          <Box flexDirection="row" columnGap={1}>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp6}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text>
                {sp7}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="green">
                {sp8}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="yellow">
                {sp9}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp10}
              </Text>
            </Box>
            <Box width="4" flexShrink={0} justifyContent="flex-end">
              <Text>
                {`${pct}%`}
              </Text>
            </Box>
          </Box>
          <Box flexDirection="row" columnGap={1}>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp11}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text>
                {sp12}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="green">
                {sp13}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="yellow">
                {sp14}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp15}
              </Text>
            </Box>
            <Box width="4" flexShrink={0} justifyContent="flex-end">
              <Text>
                {`${pct}%`}
              </Text>
            </Box>
          </Box>
          <Box flexDirection="row" columnGap={1}>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                all
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text>
                {sp16}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="green">
                {sp17}
              </Text>
            </Box>
            <Box width="6" flexShrink={0} justifyContent="flex-end">
              <Text color="yellow">
                {sp18}
              </Text>
            </Box>
            <Box width="5" flexShrink={0} justifyContent="flex-end">
              <Text color="cyan">
                {sp19}
              </Text>
            </Box>
            <Box width="4" flexShrink={0} justifyContent="flex-end">
              <Text>
                {`${pct}%`}
              </Text>
            </Box>
          </Box>
        </Box>
        <Box marginTop={1} flexDirection="row" columnGap={2}>
          <Button label="close" role="dismiss" />
          <Text dimColor>
            read: from cache · wrote: new entry · new: uncached
          </Text>
        </Box>
      </Box>
    )
  })

  // the band above the prompt; what else goes there is drawn under it
  on('ui.render', { component: 'AbovePrompt' }, async ($, e, next) => {
    const { Box, Text } = $.ui.resolve(e)
    const ICON = '…'
    const ratio = '…'
    const fmtTokens = '…'
    const fmtCountdown = '…'
    const ttl = '…'
    const text = '…'
    return (
      <Box flexDirection="column">
        <Box flexDirection="row" columnGap={1}>
          <Text bold>
            {ICON}
          </Text>
          <Text bold color="cyan">
            cache
          </Text>
          <Text>
            ████████░░░░░░░░
          </Text>
          <Text bold>
            {`${ratio}%`}
          </Text>
          <Text color="green">
            {`read ${fmtTokens}`}
          </Text>
          <Text color="yellow">
            {`wrote ${fmtTokens}`}
          </Text>
          <Text color="cyan">
            {`new ${fmtTokens}`}
          </Text>
          <Text dimColor>
            {`${fmtTokens} tok`}
          </Text>
          <Text bold color="red">
            {`⏱ ${fmtCountdown}`}
          </Text>
          <Text dimColor wrap="truncate-end">
            {`${ttl} · ${text}`}
          </Text>
        </Box>
        {await next(e)}
      </Box>
    )
  })

  on('session.start', async ($, e, next) => {
    const fmtSpan = '…'
    const tail = '…'
    const read = '…'
    await $.ui.toast(`cache expires in ${fmtSpan}: ${tail}`)
    await $.ui.toast(`cache-countdown settings: ${read}`)
    return next(e)
  })
}

The mod's own code

Its licence text was not found at the commit read, so only the places in the source are linked.

What its code calls

env varsremembers

The design, read from code

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 c673d747b8d1 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 readEvery module hooks/hooks.json names was read.hooks/cache-countdown.tsx
ParsesEvery file parses as TypeScript or JavaScript.3 files parsed
All its code is in the modEvery import is a file of the mod or the engine's own module; no packages, no require.all its code is in the mod
ReadableNo 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 openNetwork 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 drawsThe 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 lineWhether 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 WindowsWhether every program it starts through $.process exists on Windows (tail, date, open, osascript, /usr/… do not).runs no program a Windows PC lacks
NetworkWhether every fetch names its https host in the code.no network
ProgramsWhether 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 sendsWhether it both reads files or environment variables and reaches the network.reaches no network
Keys in the sourceWhether the source holds what looks like an API key or a private key.no keys in the source
LicenceAn open licence (MIT, Apache-2.0, BSD, ISC, Unlicense, 0BSD, CC0) with its text lets modscode show its code; otherwise the code is linked.no licence

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 jmac122/cache-countdown
/plugin install cache-countdown@cache-countdown

This installs the marketplace's latest commit, which may not be the one read here (c673d747b8d1). 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 "jmac122-cache-countdown" with its code and make me a pane like it

Search them from Claude: the MCP connector

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