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nerv

Barra lateral estilo Evangelion: cuota, contexto, qué hace el agente, PRs, subagentes y alertas

Code you can checkTerminal + desktopPaneBandToastBoxText

What it does

  • Draws a pane, a band above the prompt, toasts in the desktop app
  • Adds /nerv
  • Watches tool calls
  • Hooks agent.spawn, prompt.submit, session.end, session.measure and 6 more
  • Keeps its own state between turns

Good points

  • No network calls
  • Written in TypeScript
  • Has a desktop-specific branch
  • 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 nerv by Gonzalo Rocca (pane, band, toast), as modscode read it from the mod's code:
// https://modscode.com/gallery/gonzalonicolasr-nerv/
// 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 $.ui.open({ id: 'my-pane', title: "NERV" })
  on('ui.render', { component: 'Pane', requestId: 'my-pane' }, async ($, e) => {
    const { Box, Text } = $.ui.resolve(e)
    return (
      <Box flexDirection="column">
        <Box flexDirection="column" flexShrink={0} />
        <Box flexDirection="row" flexGrow={1} flexShrink={1} minHeight={0} overflow="hidden">
          <Box flexDirection="column" flexGrow={1} overflow="hidden">
            <Box flexDirection="column" flexShrink={0} />
          </Box>
          <Box flexDirection="column" width={1} />
        </Box>
        <Box flexDirection="column" flexShrink={0} marginTop={1}>
          <Text wrap="truncate" />
          <Box flexDirection="row" justifyContent="space-between">
            <Text wrap="truncate" />
            <Text wrap="truncate" />
          </Box>
        </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)
    return (
      <Box flexDirection="column">
        <Text wrap="truncate">
          <Text bold>
            {"⚠ NERV "}
          </Text>
          <Text>
            SYNC – · 5H –
          </Text>
        </Text>
        {await next(e)}
      </Box>
    )
  })

  on('session.start', async ($, e, next) => {
    const message = '…'
    const text = '…'
    await $.ui.toast(`nodd: ${message}`)
    await $.ui.toast(`forge: ${text}`)
    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

runs programswrites filesenv varstool callsremembers

What its code shows

Read from the source at commit ab12cf63e5d1 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/register.ts
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.its repository's .claude-plugin/marketplace.json does not list it: no install line to give
Programs on WindowsWhether every program it starts through $.process exists on Windows (tail, date, open, osascript, /usr/… do not).hooks/register.ts:1411 mkdir (not on Windows); hooks/register.ts:1457 mkdir (not on Windows)
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.hooks/register.ts:324 bash (a shell or interpreter); hooks/register.ts:341 bash (a shell or interpreter); hooks/register.ts:358 bash (a shell or interpreter); hooks/register.ts:468 a program named at run time; hooks/register.ts:2073 a program named at run time
Reads and sendsWhether it both reads files or environment variables and reaches the network.reads environment variables and files and reaches the 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's .claude-plugin/marketplace.json does not list it, so there is no install line to give. Read it as code, or follow its author's README.

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 "gonzalonicolasr-nerv" with its code and make me a pane like it

Search them from Claude: the MCP connector

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