Veronum
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Code with anyone, on any platform.

Veronum brings real-time shared Claude Code sessions, ten parallel agents, undo/redo, version history, and per-project group chat to Claude, Cursor, Warp, VS Code, and Zed.

Works on
  • Claude
  • Cursor
  • Warp
  • VS Code
  • Zed
Multi-agent dispatch

Ten agents, one master task — run in parallel.

Open the multi-agent composer, type a goal, fan it out across up to ten specialist agents, each in their own context window. The Task tool spawns them in parallel; Veronum streams progress back into one bubble.

T3 Tools/Add unit tests for multi-agent orchestrator

Add unit tests for multi-agent orchestrator

9 turns· mirroring· bound to ~/T3 Tools
Ddylan14m ago
Help me ship the auth fix — I want it parallelized across our subagents so the unit tests, refactor and deploy happen at once.
claude13m ago
Sounds good. I'll dispatch the work across our specialist agents — open the multi-agent composer (the icon between the paperclip and the model picker) and give me one master goal plus a sub-task per agent.
Reply to Claude — Enter to send, Shift+Enter for newline. Type / for commands.
Real-time multiplayer

Code with anyone — every turn mirrors instantly.

Share a session with a teammate and you're both inside the same Claude conversation. Prompts mirror live, presence avatars show who's looking at what, and per-session group chat keeps team chatter out of the Claude thread.

Dylan's Mac · host
T3 Tools/Refactor auth middleware

Refactor auth middleware

2 turns
Ddylan2m ago
Need to drop the legacy cookie path before next deploy.
claude1m ago
Sure. Want me to grep for getSessionFromCookie callers first or jump to the rewrite?
Reply to Claude — Enter to send, Shift+Enter for newline. Type / for commands.
Katya's Mac · joined
T3 Tools/Refactor auth middleware
Pick a session

Choose a Claude Code project from the left rail and click any of its sessions to open the conversation, activity feed, and shared file tree.

Undo, redo, version history

Every five seconds, a snapshot. One click to roll back.

Veronum auto-snapshots the bound folder every 5 seconds of quiet. Undo or redo Claude's last edit straight from the header, or open Version History to revert to any earlier snapshot.

Pro · auto-snapshot every 5 s
T3 Tools/Refactor session middleware

Refactor session middleware

6 turns· mirroring· bound to ~/T3 Tools
Ddylan3m ago
Drop the legacy cookie path in session middleware.
claude2m ago
On it — rewriting apps/server/src/middleware/session.ts to read from the bearer token only.
Reply to Claude — Enter to send, Shift+Enter for newline. Type / for commands.
Image chat

Paste a screenshot. Claude actually sees it.

Drag, drop, or paste an image into the composer — Veronum auto-resizes it to under 2000 px and ships it as a real image content block (not a text marker). Past images in old turns render inline too.

T3 Tools/Refactor session middleware

Refactor session middleware

3 turns· mirroring· bound to ~/T3 Tools
Ddylan2m ago
The auth refactor broke the build — let me show you the error.
claude1m ago
Paste a screenshot or drop the file directly into the composer — I'll read the error and patch it.
Reply to Claude — Enter to send, Shift+Enter for newline. Type / for commands.

Veronum is the workspace power users keep building themselves.

  • Real-time shared Claude Code sessionsMultiplayer
  • Ten parallel agents, one master taskComposer
  • Auto-snapshots every five seconds + undo / redoHistory
  • Per-project, per-session group chatTeam
  • Image paste with auto-resize to 2000 pxComposer
  • Works on Claude, Cursor, Warp, VS Code, ZedPlatforms
  • Apple-signed + notarized for macOSDistribution
  • Local-first — your code never leaves your MacPrivacy

$25 a month.
Seven days free.

One subscription unlocks the full app: Claude chat, multi-agent composer, live meeting transcripts, and connectors for Stripe, Supabase, and Slack. Cancel anytime through Stripe.

SubscribeStart free trial

No credit card required for the trial. One universal Mac build — works on Apple Silicon and Intel.

FAQ

Questions, answered.

  • What is Veronum?

    A macOS desktop app for working in Claude Code with anyone, on any platform. It adds real-time multiplayer sessions, ten parallel agents on one master task, undo/redo, version history, image chat, and per-project group chat to whatever Claude-powered editor you already use.

  • Which platforms does it work with?

    Claude Desktop, Cursor, Warp, VS Code, and Zed. Veronum reads the standard Claude Code session JSONL on disk, so any client that writes to ~/.claude/projects works without setup. New clients are auto-detected on launch.

  • How does the multiplayer session work?

    Click Share on a session — Veronum mints a magic invite link, creates a Veronum project, and starts mirroring every turn through Supabase Realtime. Your teammate joins the link and sees your conversation live, can post in the per-session group chat, and gets presence avatars showing who's looking at what file.

  • What's the deal with the ten agents?

    Open the multi-agent composer (the icon between the paperclip and the model picker), give it one master goal plus a sub-task per agent, and Veronum dispatches up to ten @veronum-agent-N specialists in parallel via Claude's Task tool. Each agent runs in its own context window. You see live progress per agent in the chat bubble.

  • Is my data private?

    Yes. Claude conversations stay between your Mac and Anthropic — Veronum never proxies them. Shared session mirrors live in your own Supabase project (we host the public default; teams on enterprise can self-host). Your subscription state is anonymous via a local install token, no password, no email harvesting.

  • How does the trial work?

    First 7 days are free. No card needed during the trial. Pro features (multi-agent dispatch + version history) ask for $25/month after day 7. You can subscribe through Stripe Checkout straight from the app's Settings.

  • Can I cancel?

    Anytime, from the Stripe billing portal linked inside Settings. Veronum keeps working until the end of your paid period.

  • Will it work on Windows or Linux?

    Not yet. Mac first (Apple-signed and notarized). Windows is on the roadmap; Linux follows if there's demand.

  • Will Veronum keep working when Anthropic ships new Claude features?

    Yes. Veronum runs the same claude CLI you already have on your Mac — when Anthropic ships a new feature, Veronum picks it up the next time you launch.