whats-next by ninthspace: Claude Code mod code and design

What it does

Draws a band above the prompt, a pane
Adds /next
Watches tool calls
Hooks prompt.submit, session.start
Keeps its own state between turns

Good points

No network calls
Starts no processes
Written in TypeScript
Writes no files

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 whats-next by Chris Aves (pane, band), as modscode read it from the mod's code:
// https://modscode.com/gallery/ninthspace-whats-next/
// 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 split = '…'
    const title = '…'
    const length = '…'
    return (
      <Box flexDirection="column">
        <Box>
          <Text wrap="truncate-end">
            <Text color="cyan">
              {"Plan next "}
            </Text>
            <Text bold>
              {"spec "}
              {split}
            </Text>
            <Text>
              {" "}
              {title}
            </Text>
            <Text dimColor>
              {" ("}
              {length}
              {" "}
              spec
              {" without epics · /next)"}
            </Text>
          </Text>
        </Box>
        {await next(e)}
      </Box>
    )
  })

  // the pane: open it with $.ui.open({ id: 'my-pane', title: "What's next" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text, Button, Markdown } = $.ui.resolve(e)
    const repo = '…'
    const summary = '…'
    const label = '…'
    const title = '…'
    const id = '…'
    const title2 = '…'
    const tasksDone = '…'
    const tasksTotal = '…'
    const i = '…'
    const label2 = '…'
    const title3 = '…'
    const stateOf = '…'
    const i2 = '…'
    const label3 = '…'
    const title4 = '…'
    const stateOf2 = '…'
    const i3 = '…'
    const label4 = '…'
    const title5 = '…'
    const stateOf3 = '…'
    const length = '…'
    const split = '…'
    const title6 = '…'
    const storiesDone = '…'
    const storiesTotal = '…'
    const after = '…'
    const split2 = '…'
    const title7 = '…'
    const storiesDone2 = '…'
    const storiesTotal2 = '…'
    const after2 = '…'
    const split3 = '…'
    const title8 = '…'
    const storiesDone3 = '…'
    const storiesTotal3 = '…'
    const after3 = '…'
    const split4 = '…'
    const title9 = '…'
    const split5 = '…'
    const title10 = '…'
    const split6 = '…'
    const title11 = '…'
    const error = '…'
    const text = '…'
    return (
      <Box flexDirection="column">
        <Text bold>
          {repo}
          <Text dimColor>
            {" "}
            {summary}
          </Text>
        </Text>
        <Text>
          {" "}
        </Text>
        <Box flexDirection="column">
          <Text color="cyan" bold>
            Now
          </Text>
          <Text wrap="truncate-end">
            {label}
            {" "}
            {title}
          </Text>
          <Text wrap="truncate-end" dimColor>
            {" task "}
            {id}
            {" "}
            {title2}
            {" ("}
            {tasksDone}
            /
            {tasksTotal}
            {" done)"}
          </Text>
          <Text>
            {" "}
          </Text>
          <Text color="cyan" bold>
            Order
          </Text>
          <Text wrap="truncate-end">
            <Text>
              {i}
              {" "}
              {label2}
              {" "}
              {title3}
              {" "}
            </Text>
            <Text>
              {stateOf}
            </Text>
          </Text>
          <Text wrap="truncate-end">
            <Text>
              {i2}
              {" "}
              {label3}
              {" "}
              {title4}
              {" "}
            </Text>
            <Text>
              {stateOf2}
            </Text>
          </Text>
          <Text wrap="truncate-end">
            <Text>
              {i3}
              {" "}
              {label4}
              {" "}
              {title5}
              {" "}
            </Text>
            <Text>
              {stateOf3}
            </Text>
          </Text>
          <Text dimColor>
            {" … "}
            {length}
            {" more"}
          </Text>
          <Text>
            {" "}
          </Text>
          <Text color="cyan" bold>
            Epics
          </Text>
          <Text wrap="truncate-end">
            {split}
            {" "}
            {title6}
            {" "}
            <Text dimColor>
              {storiesDone}
              /
              {storiesTotal}
              {" stories"}
            </Text>
            <Text color="red">
              {" "}
              {after}
            </Text>
          </Text>
          <Text wrap="truncate-end">
            {split2}
            {" "}
            {title7}
            {" "}
            <Text dimColor>
              {storiesDone2}
              /
              {storiesTotal2}
              {" stories"}
            </Text>
            <Text color="red">
              {" "}
              {after2}
            </Text>
          </Text>
          <Text wrap="truncate-end">
            {split3}
            {" "}
            {title8}
            {" "}
            <Text dimColor>
              {storiesDone3}
              /
              {storiesTotal3}
              {" stories"}
            </Text>
            <Text color="red">
              {" "}
              {after3}
            </Text>
          </Text>
          <Text>
            {" "}
          </Text>
        </Box>
        <Box flexDirection="column">
          <Text color="cyan" bold>
            Specs without epics
          </Text>
          <Text wrap="truncate-end">
            {split4}
            {" "}
            {title9}
            {" "}
            <Text color="magenta">
              plan
            </Text>
          </Text>
          <Text wrap="truncate-end">
            {split5}
            {" "}
            {title10}
            {" "}
            <Text color="magenta">
              plan
            </Text>
          </Text>
          <Text wrap="truncate-end">
            {split6}
            {" "}
            {title11}
            {" "}
            <Text color="magenta">
              plan
            </Text>
          </Text>
          <Text>
            {" "}
          </Text>
        </Box>
        <Box>
          <Text color="cyan" bold>
            {"Next steps "}
          </Text>
          <Button hotkey="a" label="asking…" />
        </Box>
        <Text color="red">
          {error}
        </Text>
        <Text dimColor>
          The epics or specs changed since this note was written.
        </Text>
        <Markdown text={`${text}`} />
      </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.

whats-next/hooks/register.tsx lines 182–214 · Band

whats-next/hooks/register.tsx:182

  on('ui.render', { component: 'AbovePrompt' }, async ($, e, next) => {
    const current = await read($, plan)
    const first = current?.order[0]
    const spec = current?.specs[0]
    if (e.props.hasSurvey || current === null || (first === undefined && spec === undefined)) return next(e)
    const { Box, Text } = $.ui.resolve(e)

    if (first === undefined && spec !== undefined) {
      return (
        <Box>
          <Text wrap="truncate-end">
            <Text color="cyan">Plan next </Text>
            <Text bold>spec {spec.id.split('-spec-')[0]}</Text>
            <Text> {spec.title}</Text>
            <Text dimColor>  ({current.specs.length} {current.specs.length === 1 ? 'spec' : 'specs'} without epics · /next)</Text>
          </Text>
        </Box>
      )
    }
    if (first === undefined) return next(e)
    const task = first.nextTask === null ? '' : ` → ${first.nextTask.id} ${first.nextTask.title}`

    return (
      <Box>
        <Text wrap="truncate-end">
          <Text color="cyan">Next </Text>
          <Text bold>{first.epicId.split('-epic-')[0]} S{first.number}</Text>
          <Text> {first.title}{task}</Text>
          <Text dimColor>  ({current.order.length} stories left · /next)</Text>
        </Text>
      </Box>
    )
  })

whats-next/hooks/register.tsx lines 216–300 · Pane

whats-next/hooks/register.tsx:216

  on('ui.render', { component: 'Pane', requestId: PANE }, async ($, e) => {
    const { Box, Text, Button, Markdown } = $.ui.resolve(e)
    const current = await read($, plan)
    const saved = await read($, note)
    const isBusy = await read($, isNoteBusy)
    const error = await read($, noteError)

    if (current === null) return <Text dimColor>No docs/epics or docs/specifications folder in this directory or above it.</Text>
    if (!hasWork(current)) return <Text dimColor>{current.repo}: no stories left and every spec has epics.</Text>

    const label = (s: NextStory) => `${s.epicId.split('-epic-')[0]} S${s.number}`
    // "Epic 34-01-epic-coupons-overview" reads as "34-01" and "Story 2" as "S2", matching the row labels;
    // an epic named by both the epic and the story appears once.
    const after = (tokens: string[]) => {
      const short = tokens.map(t => t.replace(/^story\s+(\d+)$/i, 'S$1').replace(/^epic\s+/i, '').replace(/-epic-.*$/, ''))

      return `after ${[...new Set(short)].join(', ')}`
    }
    const stateOf = (s: NextStory) => (s.status === 'In Progress' ? 'doing' : s.isReady ? 'ready' : after(s.waitsOn))
    const colourOf = (s: NextStory) => (s.status === 'In Progress' ? 'yellow' : s.isReady ? 'green' : 'red')
    const first = current.order[0]
    const isStale = saved !== null && saved.signature !== current.signature
    const specCount = `${current.specs.length} ${current.specs.length === 1 ? 'spec' : 'specs'} without epics`
    const summary = [
      current.order.length > 0 ? `${plural(current.order.length, 'story', 'stories')} · ${plural(current.epics.length, 'epic', 'epics')} left` : '',
      current.specs.length > 0 ? specCount : '',
    ].filter(Boolean).join(' · ')

    return (
      <Box flexDirection="column">
        <Text bold>{current.repo}<Text dimColor>  {summary}</Text></Text>
        <Text> </Text>
        {first !== undefined && (
          <Box flexDirection="column">
            <Text color="cyan" bold>Now</Text>
            <Text wrap="truncate-end">{label(first)} {first.title}</Text>
            {first.nextTask !== null && (
              <Text wrap="truncate-end" dimColor>  task {first.nextTask.id} {first.nextTask.title} ({first.tasksDone}/{first.tasksTotal} done)</Text>
            )}
            <Text> </Text>
            <Text color="cyan" bold>Order</Text>
            {current.order.slice(0, 30).map((s, i) => (
              <Text wrap="truncate-end">
                <Text dimColor={!s.isReady && s.status !== 'In Progress'}>{String(i + 1).padStart(2)} {label(s)} {s.title}  </Text>
                <Text color={colourOf(s)}>{stateOf(s)}</Text>
              </Text>
            ))}
            {current.order.length > 30 && <Text dimColor>   … {current.order.length - 30} more</Text>}
            <Text> </Text>
            <Text color="cyan" bold>Epics</Text>
            {current.epics.map(epic => (
              <Text wrap="truncate-end">
                {epic.id.split('-epic-')[0]} {epic.title}  <Text dimColor>{epic.storiesDone}/{epic.storiesTotal} stories</Text>
                {epic.waitsOn.length > 0 && <Text color="red">  {after(epic.waitsOn)}</Text>}
              </Text>
            ))}
            <Text> </Text>
          </Box>
        )}
        {current.specs.length > 0 && (
          <Box flexDirection="column">
            <Text color="cyan" bold>Specs without epics</Text>
            {current.specs.map(spec => (
              <Text wrap="truncate-end">
                {spec.id.split('-spec-')[0]} {spec.title}  <Text color="magenta">plan</Text>
              </Text>
            ))}
            <Text> </Text>
          </Box>
        )}
        <Box>
          <Text color="cyan" bold>Next steps </Text>
          <Button
            key="ask"
            hotkey="a"
            label={isBusy ? 'asking…' : saved === null ? 'Ask Claude' : 'Refresh'}
            onPress={() => void askForNote($)}
          />
        </Box>
        {error !== null && <Text color="red">{error}</Text>}
        {saved !== null && isStale && <Text dimColor>The epics or specs changed since this note was written.</Text>}
        {saved !== null && <Markdown text={saved.text} dimColor={isStale} />}
      </Box>
    )
  })

Licence text (MIT)

MIT License

Copyright (c) 2025 Chris Aves

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

reads filesdrives Claudetool callsremembers

The design, read from code

Claude — Code

Plan next spec Order Fix login (3 spec without epics · /next)

Ask Claude…

What's next

acme/app Withdrawn

Nowbuild Fix login task a1b2c3d Fix login (3/3 done) Order3 build Fix login ok3 build Fix login ok3 build Fix login ok … 3 more EpicsOrder Fix login 3/3 stories NextOrder Fix login 3/3 stories NextOrder Fix login 3/3 stories Next

Specs without epicsOrder Fix login planOrder Fix login planOrder Fix login plan

Next steps asking… a

NextThe epics or specs changed since this note was written.

Now

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 32698c418f30 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.whats-next/hooks/register.tsx
Parses	Every file parses as TypeScript or JavaScript.2 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 ninthspace/claude-code-marketplace

/plugin install whats-next@ninthspace-marketplace

This installs the marketplace's latest commit, which may not be the one read here (32698c418f30). 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 "ninthspace-whats-next" with its code and make me a pane like it

Search them from Claude: the MCP connector