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modscode / Gallery / context-bar

context-bar

Stacked bar of the context window above the prompt, coloured by /context category, with rate limits, room before compaction and session length; /context-bar details for a full token breakdown

Code you can checkTerminal + desktopPaneBandBoxButtonText

What it does

  • Draws a band above the prompt, a pane
  • Adds /context-bar
  • Hooks session.measure, session.start, turn.complete, ui.close

Good points

  • No network calls
  • Starts no processes
  • Small: 361 lines
  • Written in TypeScript

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 context-bar by Akash Bhatnagar (pane, band), as modscode read it from the mod's code:
// https://modscode.com/gallery/akash001uts-context-bar/
// 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 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 GLYPH = '…'
    const GLYPH2 = '…'
    const GLYPH3 = '…'
    const summary = '…'
    const name = '…'
    const tokens = '…'
    const name2 = '…'
    const tokens2 = '…'
    const name3 = '…'
    const tokens3 = '…'
    const info = '…'
    return (
      <Box flexDirection="column">
        <Text>
          <Text>
            {GLYPH}
          </Text>
          <Text>
            {GLYPH2}
          </Text>
          <Text>
            {GLYPH3}
          </Text>
          <Text dimColor>
            {summary}
          </Text>
        </Text>
        <Text wrap="truncate">
          <Text>
            <Text>
              ■
            </Text>
            <Text dimColor>
              {" "}
              {name}
              {" "}
              {tokens}
              {" "}
            </Text>
          </Text>
          <Text>
            <Text>
              ■
            </Text>
            <Text dimColor>
              {" "}
              {name2}
              {" "}
              {tokens2}
              {" "}
            </Text>
          </Text>
          <Text>
            <Text>
              ■
            </Text>
            <Text dimColor>
              {" "}
              {name3}
              {" "}
              {tokens3}
              {" "}
            </Text>
          </Text>
        </Text>
        <Text wrap="truncate" dimColor>
          {info}
        </Text>
        {await next(e)}
      </Box>
    )
  })

  // the pane: open it with $.ui.open({ id: 'my-pane', title: "Context details" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const model = '…'
    const total = '…'
    const max = '…'
    const pct = '…'
    const name = '…'
    const note = '…'
    const tokens = '…'
    const pct2 = '…'
    const name2 = '…'
    const note2 = '…'
    const tokens2 = '…'
    const pct3 = '…'
    const name3 = '…'
    const note3 = '…'
    const tokens3 = '…'
    const pct4 = '…'
    const extra = '…'
    const name4 = '…'
    const note4 = '…'
    const tokens4 = '…'
    const pct5 = '…'
    const name5 = '…'
    const note5 = '…'
    const tokens5 = '…'
    const pct6 = '…'
    const name6 = '…'
    const note6 = '…'
    const tokens6 = '…'
    const pct7 = '…'
    const extra2 = '…'
    const name7 = '…'
    const note7 = '…'
    const tokens7 = '…'
    const pct8 = '…'
    const name8 = '…'
    const note8 = '…'
    const tokens8 = '…'
    const pct9 = '…'
    const name9 = '…'
    const note9 = '…'
    const tokens9 = '…'
    const pct10 = '…'
    const included = '…'
    const name10 = '…'
    const note10 = '…'
    const tokens10 = '…'
    const pct11 = '…'
    const name11 = '…'
    const note11 = '…'
    const tokens11 = '…'
    const pct12 = '…'
    const name12 = '…'
    const note12 = '…'
    const tokens12 = '…'
    const pct13 = '…'
    const extra3 = '…'
    const name13 = '…'
    const note13 = '…'
    const tokens13 = '…'
    const pct14 = '…'
    const name14 = '…'
    const note14 = '…'
    const tokens14 = '…'
    const pct15 = '…'
    const name15 = '…'
    const note15 = '…'
    const tokens15 = '…'
    const pct16 = '…'
    const total2 = '…'
    const tokens16 = '…'
    const cacheRead = '…'
    const cacheWrite = '…'
    const uncached = '…'
    const output = '…'
    return (
      <Box flexDirection="column">
        <Text>
          <Text bold>
            {model}
          </Text>
          <Text dimColor>
            {"  "}
            {total}
            /
            {max}
            {" ("}
            {pct}
            )
          </Text>
        </Text>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Categories
          </Text>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name}
                <Text dimColor>
                  {" "}
                  {note}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens}
              {" "}
              <Text dimColor>
                {pct2}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name2}
                <Text dimColor>
                  {" "}
                  {note2}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens2}
              {" "}
              <Text dimColor>
                {pct3}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name3}
                <Text dimColor>
                  {" "}
                  {note3}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens3}
              {" "}
              <Text dimColor>
                {pct4}
              </Text>
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Memory files
            <Text dimColor>
              {" "}
              {extra}
            </Text>
          </Text>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name4}
                <Text dimColor>
                  {" "}
                  {note4}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens4}
              {" "}
              <Text dimColor>
                {pct5}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name5}
                <Text dimColor>
                  {" "}
                  {note5}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens5}
              {" "}
              <Text dimColor>
                {pct6}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name6}
                <Text dimColor>
                  {" "}
                  {note6}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens6}
              {" "}
              <Text dimColor>
                {pct7}
              </Text>
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            MCP servers
            <Text dimColor>
              {" "}
              {extra2}
            </Text>
          </Text>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name7}
                <Text dimColor>
                  {" "}
                  {note7}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens7}
              {" "}
              <Text dimColor>
                {pct8}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name8}
                <Text dimColor>
                  {" "}
                  {note8}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens8}
              {" "}
              <Text dimColor>
                {pct9}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name9}
                <Text dimColor>
                  {" "}
                  {note9}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens9}
              {" "}
              <Text dimColor>
                {pct10}
              </Text>
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Skills
            <Text dimColor>
              {" "}
              {`${included}/${total} listed, ${tokens} in all; largest shown`}
            </Text>
          </Text>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name10}
                <Text dimColor>
                  {" "}
                  {note10}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens10}
              {" "}
              <Text dimColor>
                {pct11}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name11}
                <Text dimColor>
                  {" "}
                  {note11}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens11}
              {" "}
              <Text dimColor>
                {pct12}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name12}
                <Text dimColor>
                  {" "}
                  {note12}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens12}
              {" "}
              <Text dimColor>
                {pct13}
              </Text>
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Custom agents
            <Text dimColor>
              {" "}
              {extra3}
            </Text>
          </Text>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name13}
                <Text dimColor>
                  {" "}
                  {note13}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens13}
              {" "}
              <Text dimColor>
                {pct14}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name14}
                <Text dimColor>
                  {" "}
                  {note14}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens14}
              {" "}
              <Text dimColor>
                {pct15}
              </Text>
            </Text>
          </Box>
          <Box flexDirection="row">
            <Box flexGrow={1}>
              <Text wrap="truncate">
                <Text>
                  {"■ "}
                </Text>
                {name15}
                <Text dimColor>
                  {" "}
                  {note15}
                </Text>
              </Text>
            </Box>
            <Text>
              {" "}
              {tokens15}
              {" "}
              <Text dimColor>
                {pct16}
              </Text>
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Slash commands
          </Text>
          <Text dimColor>
            {"  "}
            {included}
            /
            {total2}
            {" listed, "}
            {tokens16}
            {" tokens"}
          </Text>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            Last API call
          </Text>
          <Text dimColor>
            {"  "}
            {"cache read "}
            {cacheRead}
            {" · cache write "}
            {cacheWrite}
            {" · uncached "}
            {uncached}
            {" · output"}
            {" "}
            {output}
          </Text>
        </Box>
        <Box marginTop={1}>
          <Button label="Refresh" hotkey="r" dimColor />
        </Box>
      </Box>
    )
  })
}

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/context-bar/hooks/register.tsx lines 209–248 · Band
plugins/context-bar/hooks/register.tsx:209
  on('ui.render', { component: 'AbovePrompt' }, async ($, e, next) => {
    if (e.props.hasSurvey || !(await read($, isOn))) return next(e)
    const snap = await read($, snapshot)
    if (!snap || snap.segments.length === 0) return next(e)

    const { Box, Text } = $.ui.resolve(e)
    const summary = ` ${snap.percent}% ${short(snap.total)}/${short(snap.max)}`
    const width = Math.max(10, e.props.bodyColumns - summary.length)
    const cells = allocate(snap.segments, snap.max, width)
    const used = snap.segments.filter(s => s.kind === 'used')
    const info = e.props.maxRows >= 3 ? infoLine(snap, await read($, now)) : ''

    return (
      <Box flexDirection="column">
        <Text>
          {snap.segments.map((s, i) =>
            cells[i]! > 0 ? (
              <Text color={s.color} dimColor={s.kind === 'free'}>
                {GLYPH[s.kind].repeat(cells[i]!)}
              </Text>
            ) : null,
          )}
          <Text dimColor>{summary}</Text>
        </Text>
        <Text wrap="truncate">
          {used.map(s => (
            <Text>
              <Text color={s.color}>■</Text>
              <Text dimColor> {s.name} {short(s.tokens)}  </Text>
            </Text>
          ))}
        </Text>
        {info ? (
          <Text wrap="truncate" dimColor>
            {info}
          </Text>
        ) : null}
      </Box>
    )
  })
plugins/context-bar/hooks/register.tsx lines 250–327 · Pane
plugins/context-bar/hooks/register.tsx:250
  on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const d = await read($, details)
    const refreshButton = <Button key="refresh" label="Refresh" hotkey="r" dimColor onPress={() => refreshDetails($).catch(() => {})} />
    if (!d)
      return (
        <Box flexDirection="column">
          <Text dimColor>Counting tokens…</Text>
          {refreshButton}
        </Box>
      )

    const pct = (n: number) => (d.max > 0 ? `${((n / d.max) * 100).toFixed(1)}%` : '')
    const line = (r: Row, color?: string) => (
      <Box flexDirection="row">
        <Box flexGrow={1}>
          <Text wrap="truncate">
            {color ? <Text color={color}>■ </Text> : '  '}
            {r.name}
            {r.note ? <Text dimColor>  {r.note}</Text> : null}
          </Text>
        </Box>
        <Text>
          {' '}
          {short(r.tokens).padStart(6)} <Text dimColor>{pct(r.tokens).padStart(6)}</Text>
        </Text>
      </Box>
    )
    const section = (title: string, rows: Row[], extra?: string) =>
      rows.length === 0 ? null : (
        <Box flexDirection="column" marginTop={1}>
          <Text bold>
            {title}
            {extra ? <Text dimColor>  {extra}</Text> : null}
          </Text>
          {rows.map(r => line(r))}
        </Box>
      )

    return (
      <Box flexDirection="column">
        <Text>
          <Text bold>{d.model}</Text>
          <Text dimColor>
            {'  '}
            {short(d.total)}/{short(d.max)} ({pct(d.total)})
          </Text>
        </Text>
        <Box flexDirection="column" marginTop={1}>
          <Text bold>Categories</Text>
          {d.categories.map(c => line({ name: c.name, tokens: c.tokens, note: c.kind === 'deferred' ? 'loaded on demand' : undefined }, c.color))}
        </Box>
        {section('Memory files', d.memoryFiles)}
        {section('MCP servers', d.mcpServers)}
        {d.skills ? section('Skills', d.skills.top, `${d.skills.included}/${d.skills.total} listed, ${short(d.skills.tokens)} in all; largest shown`) : null}
        {section('Custom agents', d.agents)}
        {d.commands ? (
          <Box flexDirection="column" marginTop={1}>
            <Text bold>Slash commands</Text>
            <Text dimColor>
              {'  '}
              {d.commands.included}/{d.commands.total} listed, {short(d.commands.tokens)} tokens
            </Text>
          </Box>
        ) : null}
        {d.api ? (
          <Box flexDirection="column" marginTop={1}>
            <Text bold>Last API call</Text>
            <Text dimColor>
              {'  '}cache read {short(d.api.cacheRead)}  ·  cache write {short(d.api.cacheWrite)}  ·  uncached {short(d.api.uncached)}  ·  output{' '}
              {short(d.api.output)}
            </Text>
          </Box>
        ) : null}
        <Box marginTop={1}>{refreshButton}</Box>
      </Box>
    )
  })
Licence text (MIT)
MIT License

Copyright (c) 2026 Akash Bhatnagar

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

nothing found

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 df77a060ab8d 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.plugins/context-bar/hooks/register.tsx
ParsesEvery file parses as TypeScript or JavaScript.1 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.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 Akash001uts/claude-mods
/plugin install context-bar@akash-mods

This installs the marketplace's latest commit, which may not be the one read here (df77a060ab8d). 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 "akash001uts-context-bar" with its code and make me a pane like it

Search them from Claude: the MCP connector

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