Claude Threads

 ✴ ▄█▀ ███ ✴   claude-threads
✴  █▀   █   ✴  Mattermost × Claude Code
 ✴ ▀█▄  █  ✴

Bring Claude Code to your team. Run Claude Code on your machine, share it live in Mattermost. Colleagues can watch, collaborate, and run their own sessions—all from chat.

💡 Think of it as screen-sharing for AI pair programming, but everyone can type.

Features

• Real-time streaming - Claude's responses stream live to Mattermost
• Multiple concurrent sessions - Each thread gets its own Claude session
• Session collaboration - Invite others to participate in your session
• Interactive permissions - Approve Claude's actions via emoji reactions
• Plan approval - Review and approve Claude's plans before execution
• Task tracking - Live todo list updates as Claude works
• Code diffs - See exactly what Claude is changing

How it works

flowchart TB
    subgraph local["Your Local Machine"]
        cli["Claude Code CLI<br/>(subprocess)"]
        mm["claude-threads<br/>(this service)"]
        cli <-->|"stdio"| mm
    end

    subgraph server["Mattermost Server"]
        bot["Bot Account<br/>@claude-code"]
        channel["Channel<br/>#claude-sessions"]
        bot <--> channel
    end

    mm -->|"WebSocket + REST API<br/>(outbound only)"| server

Runs entirely on your machine - only outbound connections to Mattermost. No port forwarding needed!

Prerequisites

1. Claude Code CLI installed and authenticated (claude --version)
2. Bun 1.2.21+ (bun --version) - Install Bun
3. Mattermost bot account with a personal access token

Quick Start

1. Install

bun install -g claude-threads

2. Run

cd /your/project
claude-threads

On first run, an interactive setup wizard guides you through configuration:

  claude-threads setup
  ─────────────────────────────────

  Welcome! Let's configure claude-threads.

? Default working directory: /home/user/projects
? Enable Chrome integration? No
? Git worktree mode: Prompt

  Now let's add your platform connections.

? First platform: Mattermost
? Platform ID: default
? Display name: Mattermost

  Mattermost setup:

? Server URL: https://chat.example.com
? Bot token: ********
? Channel ID: abc123def456
? Bot mention name: claude-code
? Allowed usernames (optional): alice,bob
? Auto-approve all actions? No

  ✓ Added Mattermost

? Add another platform? No

  ✓ Configuration saved!
    ~/.config/claude-threads/config.yaml

  Configured 1 platform(s):
    • Mattermost (mattermost)

  Starting claude-threads...

3. Use

In Mattermost, mention the bot:

@claude-code help me fix the bug in src/auth.ts

CLI Options

claude-threads [options]

Options:
  --url <url>              Mattermost server URL
  --token <token>          Bot token
  --channel <id>           Channel ID
  --bot-name <name>        Bot mention name (default: claude-code)
  --allowed-users <list>   Comma-separated allowed usernames
  --skip-permissions       Skip permission prompts (auto-approve)
  --no-skip-permissions    Enable permission prompts (override env)
  --chrome                 Enable Chrome integration
  --no-chrome              Disable Chrome integration
  --worktree-mode <mode>   Git worktree mode: off, prompt, require
  --setup                  Re-run setup wizard (reconfigure settings)
  --debug                  Enable debug logging
  --version                Show version
  --help                   Show help

CLI options override environment variables.

Session Commands

Type !help in any session thread to see available commands:

Note: Commands use ! prefix instead of / to avoid conflicts with Mattermost's slash commands.

Session Collaboration

Invite Users

Session owners can temporarily allow others to participate:

!invite @colleague

The colleague can now send messages in this session thread.

Kick Users

Remove an invited user from the session:

!kick @colleague

Message Approval

When an unauthorized user sends a message in a session thread, the owner sees an approval prompt:

🔒 @unauthorized-user wants to send a message:
> Can you also add error handling?

React 👍 to allow this message, ✅ to invite them to the session, 👎 to deny

Side Conversations

Messages starting with @someone-else are ignored by the bot, allowing side conversations in the thread without triggering Claude.

Downgrade Permissions

If the bot is running with --skip-permissions (auto mode), you can enable interactive permissions for a specific session:

!permissions interactive

This allows collaboration by requiring approval for Claude's actions. Note: you can only downgrade (auto → interactive), not upgrade - this ensures security.

Git Worktrees

When working on a task that requires code changes, Claude can work in an isolated git worktree. This keeps your main branch clean while Claude works on a feature branch in a separate directory.

Starting a Session with a Worktree

Specify a branch when starting:

@claude-code on branch feature/add-auth implement user authentication

Or use the worktree command:

@claude-code !worktree feature/add-auth implement user authentication

Worktree Commands

How It Works

1. Creates a new worktree at ../<repo>-worktrees/<branch>/
2. Creates or checks out the specified branch
3. Claude works in the worktree directory
4. Your main working directory stays untouched

Environment Variable

Interactive Features

Permission Approval

When Claude wants to execute a tool (edit file, run command, etc.):

• 👍 Allow - Approve this specific action
• ✅ Allow all - Approve all future actions this session
• 👎 Deny - Reject this action

To skip prompts: claude-threads --skip-permissions or set SKIP_PERMISSIONS=true

Plan Mode

When Claude creates a plan and is ready to implement:

• 👍 Approve and start building
• 👎 Request changes

Once approved, subsequent plans auto-continue.

Questions

When Claude asks questions with multiple choice options:

• React with 1️⃣ 2️⃣ 3️⃣ or 4️⃣ to answer
• Questions are asked one at a time

Task List

Claude's todo list shows live in Mattermost:

• ⬜ Pending
• 🔄 In progress
• ✅ Completed

Session Header

The session start message shows current status and updates when participants change:

🤖 claude-threads v0.5.1

| | |
|:--|:--|
| 📂 Directory | ~/project |
| 👤 Started by | @alice |
| 👥 Participants | @bob, @carol |
| 🔢 Session | #1 of 5 max |
| 🔐 Permissions | Interactive |

Cancel Session

Stop a running session:

• Type !stop or !cancel in the thread
• React with ❌ or 🛑 to any message in the thread

Access Control

Set allowedUsers in your platform config to restrict who can use the bot:

platforms:
  - id: mattermost-main
    # ...
    allowedUsers: [alice, bob, carol]

• Only listed users can start sessions
• Only listed users can approve permissions
• Session owners can !invite others temporarily
• Empty = anyone can use (be careful!)

Configuration

Configuration is stored in YAML format at ~/.config/claude-threads/config.yaml.

Example Config

version: 1
workingDir: /home/user/repos/myproject
chrome: false
worktreeMode: prompt

platforms:
  - id: mattermost-main
    type: mattermost
    displayName: Main Team
    url: https://chat.example.com
    token: your-bot-token
    channelId: abc123
    botName: claude-code
    allowedUsers: [alice, bob]
    skipPermissions: false

Global Settings

Platform Settings (Mattermost)

Environment Variables

Code Display

• Edit: Shows diff with - removed and + added lines
• Write: Shows preview of new file content
• Bash: Shows command being executed
• Read: Shows file path being read
• MCP tools: Shows tool name and server

Auto-Updates

claude-threads checks for updates every 30 minutes and notifies you when a new version is available:

• CLI: Shows a notification box on startup
• Mattermost: Shows a warning in session headers

To update:

bun install -g claude-threads

To disable update checks, set NO_UPDATE_NOTIFIER=1.

For Mattermost Admins

To set up a bot account:

1. Go to Integrations > Bot Accounts > Add Bot Account
2. Give it a username (e.g., claude-code) and display name
3. Create a Personal Access Token for the bot
4. Add the bot to the channel where it should listen

The bot needs permissions to:

• Post messages
• Add reactions
• Read channel messages

License

Apache-2.0