Codevisor DocsOverview
Add tools, instructions, agents, and workspace interfaces to Codevisor.
Codevisor has four extension systems. They solve different problems and all run on the machine that hosts Codevisor Server.
Plugins
Add server-supervised workspace panes and agent-callable tools.
MCP servers
Make external tools available to the coding agents on a machine.
Skills
Share reusable instruction sets across compatible coding agents.
Custom agents
Connect another ACP-compatible coding agent over standard input and output.
| Use this | When you need to add | Runtime |
|---|---|---|
| Custom agent | Another coding-agent CLI | ACP subprocess over standard input and output |
| MCP server | Tools for coding agents | HTTP or stdio MCP |
| Skill | Reusable agent instructions | Files installed into harness skill directories |
| Plugin | Workspace UI, agent-callable tools, or both | Supervised loopback HTTP server |
Extensions are machine-scoped. The server owns their processes, files, configuration, and credentials; connected clients manage them through the HTTP API. A plugin is the only extension that renders a workspace pane. MCP servers and plugin tools both add tools to agent sessions, while skills change agent instructions without running another service.
Trust boundary
Plugins, stdio MCP servers, skills, and custom agents can execute code or influence an agent on the server machine. Inspect their source and commands before installing them.