Feature request: Remote session control (compact, loop, slash commands via API/MCP)

Problem

Claude Code slash commands (/compact, /loop, etc.) can only be typed directly in the terminal. There's no way to trigger them remotely — not from hooks, not from MCP tools, not from external integrations like Telegram.

This creates significant friction for users who:

• Interact primarily via Telegram/Discord MCP integrations from mobile
• Run long sessions where compaction is needed but they're away from the terminal
• Want to trigger /loop or other commands from external automation

Current Workaround

Run Claude Code inside tmux, then use tmux send-keys -t session "/compact" Enter from SSH/remote. This works but requires terminal multiplexer setup and SSH access.

Proposed Solutions (any of these would help)

Option A: Remote command API

Expose a local API endpoint (e.g., localhost:PORT/api/command) that accepts slash commands:
\\\bash
curl -X POST localhost:3456/api/command -d '{"command": "/compact"}'
\\\

Option B: MCP tool for session control

Add a built-in MCP tool (e.g., \SessionControl\) that the agent can invoke:
\\\
SessionControl({ action: "compact" })
SessionControl({ action: "loop", prompt: "check CI" })
\\\

Option C: File-based command interface

Watch a file (e.g., \~/.claude/remote-commands\) for commands. External processes write to it, Claude Code reads and executes.

Option D: Hook-triggered commands

Allow hooks to return special directives that trigger slash commands:
\\\json
{ "directive": "compact" }
\\\

Use Case

User runs Claude Code with Telegram MCP. They interact from their phone all day. When context gets full, the agent auto-prepares for compaction but cannot trigger /compact itself. User must physically go to the terminal. With remote control, the Telegram message "!compact" could trigger it seamlessly.

Environment

• Claude Code 2.1.101
• macOS, Opus 4.6 (1M context)
• Telegram MCP integration