Feature Request: Cross-device session continuity — connect to active Claude Code sessions from any Claude client

Summary

Allow users to connect to an active Claude Code session from any Claude client — mobile app, claude.ai web, another laptop, or any other device — with full conversation sync across all of them.

Motivation

OpenAI Codex recently shipped a \"connect from phone\" feature that lets users continue a Codex session from the ChatGPT iOS app. This is genuinely useful for:

• Uploading photos, screenshots, or documents from your phone (e.g. a photo of a whiteboard, a handwritten diagram, a receipt) directly into an ongoing coding session
• Reviewing progress or providing input while away from your primary machine
• Seamless context switching between devices without losing session state

But the opportunity is bigger than just phone-to-desktop. Claude's ecosystem spans claude.ai web, mobile apps, Claude Code CLI, and IDE extensions. These should all be able to share session state.

Proposed Feature

Universal session continuity across all Claude clients:

• A Claude Code session started on one machine should be joinable from:
• Claude.ai web (via a dedicated "Claude Code" tab or session view)
• Claude iOS / Android app
• Another laptop running Claude Code or claude.ai
• IDE extensions (VS Code, JetBrains)
• All participants see the same conversation history in real time (synced)
• Any client can send messages, upload files/images, or review tool outputs
• File/photo uploads from mobile go directly into the active session context

User Experience Vision

1. Start a Claude Code session on your laptop as usual
2. On your phone, open the Claude app → tap "Claude Code" tab → see your active sessions
3. Tap to join → you're now in the same session, can read the conversation, send messages, or upload a photo
4. Back on your laptop, the photo appears in context and Claude Code can act on it immediately
5. Same flow works from claude.ai web or a second laptop

Why This Matters

Claude Code sessions involve rich context — file trees, long conversations, tool outputs. Today that context is siloed to one terminal window. Making it universally accessible would:

• Remove the friction of context-switching between devices
• Enable collaborative sessions (pair programming, async review)
• Let users contribute richer input (photos, voice, documents) from wherever they are

This would be a meaningful differentiator and a natural fit given Anthropic's multi-surface presence across web, mobile, and CLI.

Related

• Similar to OpenAI Codex's "connect from phone" feature (announced May 2025)
• Complements existing Claude Code IDE integrations