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claude-code - 💡(How to fix) Fix Cross-machine session sync: connect Claude Code instances across multiple machines [1 comments, 2 participants]

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anthropics/claude-code#45358•Fetched 2026-04-09 08:07:17
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Error Message

Today, the user must manually relay information between independent sessions. This is slow and error-prone.

Root Cause

This would turn Claude Code from a single-machine tool into a distributed development orchestrator. Many developers work across OS boundaries (cross-compilation, platform-specific testing, mobile + backend). The infrastructure for agent↔server communication already exists — this is a natural extension.

🤖 Filed via Claude Code on behalf of a user with a Mac+Windows+Linux cross-platform MQL5 development workflow.

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Feature Request: Cross-Machine Session Synchronization

The Problem

Currently each Claude Code session is fully independent. There's no way to coordinate work across multiple machines from a single conversation or shared context.

The Use Case

Real-world development often spans multiple machines:

  • Mac — development, planning, code editing
  • Windows — compilation (e.g. MetaEditor/MQL5), platform-specific testing
  • Linux — CI, environment checks, server-side validation
  • Web (claude.ai) — monitoring progress, answering questions on the go

Today, the user must manually relay information between independent sessions. This is slow and error-prone.

The Opportunity

Claude Code already has the agent↔server connection infrastructure. Extending this to allow session synchronization across machines and clients would be transformative:

  1. Unified conversation — one conversation context, multiple execution environments
  2. Cross-machine tool execution — "compile on Windows, edit on Mac" from a single prompt
  3. Web as observer/commander — see what agents are doing, issue commands from claude.ai
  4. Shared context — all machines see the same plan, progress, and state

Proposed Behavior

  • Register multiple Claude Code instances (different machines) under one session/workspace
  • Route commands to specific machines ("run this on Windows", "check this on Linux")
  • Web client can observe all connected agents and send commands to any of them
  • Shared conversation history across all connected instances

Why This Matters

This would turn Claude Code from a single-machine tool into a distributed development orchestrator. Many developers work across OS boundaries (cross-compilation, platform-specific testing, mobile + backend). The infrastructure for agent↔server communication already exists — this is a natural extension.

🤖 Filed via Claude Code on behalf of a user with a Mac+Windows+Linux cross-platform MQL5 development workflow.

extent analysis

TL;DR

Implementing cross-machine session synchronization in Claude Code requires extending the existing agent-server connection infrastructure to support unified conversations, cross-machine tool execution, and shared context across multiple machines and clients.

Guidance

  • Identify the key components involved in the session synchronization process, including the agent-server connection infrastructure, conversation context, and tool execution environments.
  • Design a registration system to allow multiple Claude Code instances to be registered under one session/workspace, enabling the routing of commands to specific machines.
  • Develop a web client interface to observe all connected agents and send commands to any of them, ensuring a unified conversation history across all connected instances.
  • Consider the security and authentication implications of allowing multiple machines to share a single conversation context and execute commands remotely.

Example

A potential implementation could involve creating a unique session ID that is shared across all registered machines, allowing the server to route commands and updates to the relevant instances.

Notes

The implementation of cross-machine session synchronization will require careful consideration of security, authentication, and authorization to ensure that only authorized machines and users can access and control the shared conversation context.

Recommendation

Apply a workaround by implementing a centralized hub for command routing and conversation history synchronization, allowing multiple machines to share a single conversation context and execute commands remotely, until a full implementation of cross-machine session synchronization is available.

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#conversation history#environment variable#network issue#logging issue#authentication issue

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