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context-bar

A coloured bar above the prompt showing what fills the context window, by category, and how much the last turn and its steps added.

Code you can checkTerminal + desktopPaneBandBoxButtonText

What it does

  • Draws a band above the prompt, a pane
  • Hooks session.end, session.measure, session.start, turn.complete and 2 more

Good points

  • No network calls
  • Starts no processes
  • Written in TypeScript
  • Handles errors

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 Michael McKnight (pane, band), as modscode read it from the mod's code:
// https://modscode.com/gallery/shadowdog007-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 label = '…'
    const label2 = '…'
    const label3 = '…'
    const line = '…'
    return (
      <Box flexDirection="column">
        <Box flexDirection="row">
          <Box flexDirection="row">
            <Text>
              {GLYPH}
            </Text>
            <Text>
              {GLYPH2}
            </Text>
            <Text>
              {GLYPH3}
            </Text>
          </Box>
          <Text bold>
            {" "}
            {summary}
          </Text>
        </Box>
        <Box flexDirection="row">
          <Text>
            {label}
          </Text>
          <Text>
            {label2}
          </Text>
          <Text>
            {label3}
          </Text>
        </Box>
        <Text dimColor wrap="truncate-end">
          {line}
        </Text>
        {await next(e)}
      </Box>
    )
  })

  // the pane: open it with $.ui.open({ id: 'my-pane', title: "Largest tool results" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text, Button } = $.ui.resolve(e)
    const header = '…'
    const index = '…'
    const size = '…'
    const sizeBar = '…'
    const tool = '…'
    const fitMiddle = '…'
    const key = '…'
    const fitMiddle2 = '…'
    const key2 = '…'
    const fitMiddle3 = '…'
    const key3 = '…'
    const fitMiddle4 = '…'
    const line = '…'
    const line2 = '…'
    const line3 = '…'
    const more = '…'
    const index2 = '…'
    const size2 = '…'
    const sizeBar2 = '…'
    const tool2 = '…'
    const fitMiddle5 = '…'
    const key4 = '…'
    const fitMiddle6 = '…'
    const key5 = '…'
    const fitMiddle7 = '…'
    const key6 = '…'
    const fitMiddle8 = '…'
    const line4 = '…'
    const line5 = '…'
    const line6 = '…'
    const more2 = '…'
    const index3 = '…'
    const size3 = '…'
    const sizeBar3 = '…'
    const tool3 = '…'
    const fitMiddle9 = '…'
    const key7 = '…'
    const fitMiddle10 = '…'
    const key8 = '…'
    const fitMiddle11 = '…'
    const key9 = '…'
    const fitMiddle12 = '…'
    const line7 = '…'
    const line8 = '…'
    const line9 = '…'
    const more3 = '…'
    return (
      <Box flexDirection="column">
        <Box flexDirection="row" justifyContent="space-between">
          <Text bold>
            Largest tool results in the context
          </Text>
          <Text dimColor wrap="truncate-end">
            {header}
          </Text>
        </Box>
        <Box flexDirection="column" marginTop={1}>
          <Box flexDirection="row">
            <Box>
              <Text dimColor bold>
                #
              </Text>
            </Box>
            <Box>
              <Text dimColor bold>
                Size
              </Text>
            </Box>
            <Box>
              <Text dimColor bold>
                Share
              </Text>
            </Box>
            <Box>
              <Text dimColor bold>
                Tool
              </Text>
            </Box>
            <Box>
              <Text dimColor bold>
                {"  Call"}
              </Text>
            </Box>
            <Text dimColor bold>
              Detail
            </Text>
          </Box>
          <Text dimColor>
            ────────
          </Text>
        </Box>
        <Box flexDirection="column">
          <Box flexDirection="row">
            <Box>
              <Text dimColor>
                {index}
              </Text>
            </Box>
            <Box>
              <Text>
                {size}
              </Text>
            </Box>
            <Box>
              <Text color="suggestion">
                {sizeBar}
              </Text>
            </Box>
            <Box>
              <Text color="error">
                {tool}
              </Text>
            </Box>
            <Box>
              <Button plain label={`▾ ${fitMiddle}`} />
            </Box>
            <Text dimColor>
              {fitMiddle}
            </Text>
          </Box>
          <Box flexDirection="column" marginBottom={1}>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle2}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key2}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle3}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key3}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle4}
              </Text>
            </Box>
            <Text color="error" bold>
              Error result
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line2}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line3}
            </Text>
            <Text dimColor>
              {"… "}
              {more}
              {" more lines"}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column">
          <Box flexDirection="row">
            <Box>
              <Text dimColor>
                {index2}
              </Text>
            </Box>
            <Box>
              <Text>
                {size2}
              </Text>
            </Box>
            <Box>
              <Text color="suggestion">
                {sizeBar2}
              </Text>
            </Box>
            <Box>
              <Text color="error">
                {tool2}
              </Text>
            </Box>
            <Box>
              <Button plain label={`▾ ${fitMiddle}`} />
            </Box>
            <Text dimColor>
              {fitMiddle5}
            </Text>
          </Box>
          <Box flexDirection="column" marginBottom={1}>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key4}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle6}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key5}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle7}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key6}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle8}
              </Text>
            </Box>
            <Text color="error" bold>
              Error result
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line4}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line5}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line6}
            </Text>
            <Text dimColor>
              {"… "}
              {more2}
              {" more lines"}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="column">
          <Box flexDirection="row">
            <Box>
              <Text dimColor>
                {index3}
              </Text>
            </Box>
            <Box>
              <Text>
                {size3}
              </Text>
            </Box>
            <Box>
              <Text color="suggestion">
                {sizeBar3}
              </Text>
            </Box>
            <Box>
              <Text color="error">
                {tool3}
              </Text>
            </Box>
            <Box>
              <Button plain label={`▾ ${fitMiddle}`} />
            </Box>
            <Text dimColor>
              {fitMiddle9}
            </Text>
          </Box>
          <Box flexDirection="column" marginBottom={1}>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key7}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle10}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key8}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle11}
              </Text>
            </Box>
            <Box flexDirection="row">
              <Box>
                <Text dimColor>
                  {key9}
                </Text>
              </Box>
              <Text wrap="truncate-end">
                {fitMiddle12}
              </Text>
            </Box>
            <Text color="error" bold>
              Error result
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line7}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line8}
            </Text>
            <Text wrap="truncate-end">
              <Text dimColor>
                {"│ "}
              </Text>
              {line9}
            </Text>
            <Text dimColor>
              {"… "}
              {more3}
              {" more lines"}
            </Text>
          </Box>
        </Box>
        <Box flexDirection="row" marginTop={1}>
          <Button role="dismiss" hotkey="q">
            Close
          </Button>
        </Box>
      </Box>
    )
  })
}

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

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 16e8b9bddcf7 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.2 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 ShadowDog007/claude-mods
/plugin install context-bar@shadow-claude-mods

This installs the marketplace's latest commit, which may not be the one read here (16e8b9bddcf7). 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 "shadowdog007-context-bar" with its code and make me a pane like it

Search them from Claude: the MCP connector

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