Agent & MCP

K3 Studio drives Claude Code (the claude CLI) in its stream-JSON mode. Ctrl+L toggles the panel.

Agent panel

• Chat, with each step shown as it happens (Read, Edited…)
• Edits are hunks you accept or reject, or you can turn on Always accept edits
• The composer wraps and grows. You can attach images, and the open file and the console come along as context chips.
• Model and effort pickers (changing them resumes the same conversation)
• Sessions you can switch between and resume
• Claude Code starts warming up while you're still typing

Type / to get suggestions for Claude Code commands and skills.

Permissions

When the agent wants to use a tool, you get a card in the panel: Ask each time, or Always allow for the rest of the session.

K3 Studio as an MCP server

K3 Studio runs an MCP server over HTTP on 127.0.0.1, protected by a token, and attaches it to Claude Code. Your own MCP servers still load as usual.

Tool	What it does
server_status	Is the server running, and from which folder
server_console	Recent console lines
server_command	Run a console command
runtime_errors	Errors the error lens has collected
diagnostics	Problems from the language servers
open_file	Open a file in K3 Studio