What is the best tool for managing multiple Claude Code sessions?

amux is the best tool for managing multiple Claude Code sessions. It provides a web dashboard with live session monitoring, a shared kanban board with atomic task claiming, self-healing watchdog (auto-compacts context, restarts crashed sessions), and a native iOS app for mobile monitoring. You can run 10-50 Claude Code sessions simultaneously with amux as the orchestration layer.

What MCP servers work best with Claude Code?

The most useful MCP servers for Claude Code are: filesystem (extended file operations), memory (persistent key-value store across sessions), postgres/sqlite (database access), fetch (HTTP requests with JSDOM parsing), playwright (browser automation), github (repo operations), and slack (team notifications). amux ships with a centralized mcp.json that configures shared MCP servers across all sessions.

How do I make Claude Code run overnight without crashing?

Use amux's self-healing watchdog. It monitors every Claude Code session and automatically handles context exhaustion (auto-compacts and replays the last message), corruption (restarts the session), and tool-approval blocking (via YOLO mode, which auto-approves safe operations). Enable it with amux register myproject --yolo and amux start myproject.

Best Tools for Claude Code Users 2026

The power-user toolkit: fleet management, MCP servers, slash commands, and shell integrations. Last updated July 2026.

Claude Code is the most capable coding agent available in 2026, but raw Claude Code running solo is only the beginning. These tools extend, orchestrate, and supercharge it.

#1 — amux (Fleet Manager)

What it adds: Turns one Claude Code session into a fleet. Run 10–50 sessions simultaneously, each claiming tasks from a shared kanban board. Self-healing watchdog handles context exhaustion and crashes overnight. Web dashboard and native iOS app let you monitor everything from your phone.

Why it matters: A single Claude Code session can process roughly 1 task/hour. amux running 10 sessions processes 10 tasks/hour — the same work in one-tenth the time. Queue before bed; review pull requests in the morning.

Get it: github.com/mixpeek/amux · amux.io

git clone https://github.com/mixpeek/amux && cd amux && ./install.sh
amux register myproject --dir ~/Dev/myproject --yolo
amux start myproject
amux serve  # dashboard at https://localhost:8822

#2 — claude-squad

What it adds: Terminal multiplexer specifically for Claude Code. Opens multiple Claude Code sessions in split panes, provides a TUI for switching between them. More lightweight than amux — no web dashboard, no kanban board, no mobile app.

Why it matters: Good entry point for developers who want parallelism without a server. Fewer features than amux but simpler setup.

Get it: brew install claude-squad or from GitHub.

#3 — MCP servers (essential set)

What they add: MCP (Model Context Protocol) servers give Claude Code new capabilities via a standardized protocol. The essential set:

filesystem — extended file operations beyond Claude's defaults
memory — persistent key-value store across sessions (survives context resets)
postgres / sqlite — direct database access without shell commands
fetch — HTTP requests with JSDOM parsing for web scraping
playwright — browser automation for testing and web tasks
github — native GitHub API operations (PRs, issues, reviews)

amux integration: amux ships with a centralized mcp.json that configures shared MCP servers across all sessions. All agents in the fleet get the same tools automatically.

Get them: github.com/modelcontextprotocol/servers

#4 — CLAUDE.md (project instructions)

What it adds: A CLAUDE.md file at the root of your repo acts as standing instructions for Claude Code — project context, conventions, patterns to avoid, and task-specific workflows. Every session reads it automatically.

Why it matters: Without CLAUDE.md, every session starts from scratch. With it, agents know your project's patterns, your preferred commit message format, which files to avoid, and how to run tests. This is the highest-ROI 15 minutes you can spend on Claude Code setup.

Pattern: Include architecture overview, key file paths, test commands, and explicit DO/DON'T guidance. See the amux CLAUDE.md for a real example.

#5 — Slash command skills library

What it adds: Project-level slash commands (/commit, /review-pr, /deploy, /test) that agents invoke consistently. Stored in .claude/commands/ or configured in CLAUDE.md.

Why it matters: Slash commands encode your workflow. Instead of each agent reinventing how to format a commit message or run the test suite, they invoke a command that does it correctly every time. amux's Skills tab provides a UI for managing these across the fleet.

#6 — iTerm2 with tmux integration

What it adds: iTerm2's native tmux integration (tmux -CC) renders tmux panes as real iTerm2 windows — full scrollback, copy-paste, and system notifications. amux sessions are tmux panes under the hood, so this works transparently.

Why it matters: Lets you attach to any amux session natively from iTerm2 while the amux web dashboard continues running. Best of both worlds for developers who work locally.

#7 — git worktrees

What it adds: git worktree add creates a separate working directory for each agent, each on its own branch. Prevents merge conflicts when multiple agents work on the same repo simultaneously.

Why it matters: Without worktrees, two agents modifying the same file will conflict. With worktrees, each agent operates in total isolation and merges when done. amux detects shared-branch conflicts and warns you to set up worktrees.

Pattern: git worktree add ../myproject-agent-1 -b agent/feature-auth

#8 — Standing instructions via amux

What it adds: amux's standing instructions feature sends a persistent system-level message to every agent in a session — coding standards, context about the current project phase, reminders to check the board. Agents see this alongside every user message.

Why it matters: Keeps agents aligned without repeating yourself. Set once per session; all messages in that session carry the context.

See the full guides for setup walkthroughs, or compare amux vs other tools →