🎉 v4.8.0 - LLMs Can Now Manage MCP Servers Themselves!

[ravitemer]

Hi guys! Just added something really cool that makes working with MCP servers more flexible and intuitive.

✨ toggle_mcp_server

Added a new tool that lets LLMs manage MCP servers directly!

• LLMs can now see ALL available servers, even disabled ones
• For disabled servers, we just show the name and description
• LLMs can enable exactly what they need, when they need it
• Once enabled, they get the full server schema immediately

I have taken out MCP Hub docs, native server guide etc out of neovim server and added them to a new MCPHub server.

You can opt out of this feature with auto_toggle_mcp_servers option which by default is set to true.

require("mcphub").setup({
  auto_toggle_mcp_servers = true, -- Let LLMs start and stop MCP servers automatically
})

In action:

• All servers are disabled. We ask LLM if we have any issues open in our repo. It doesn't have access to the github server but can see that the server is disabled. So it uses toggle_mcp_server tool start it. Once started we send the server tool schema with only enabled tools, custom instructions etc. It then uses list_issues to get the open issues. Thanks to our new multi instance support with v4.7.0 we can see changes made in one neovim inside other one in realtime.

llm-starts-mcp.mp4

llm-starts-mcp-avante.mp4

Here's how the prompts look now:

## Connected Servers

### github
Server for GitHub operations

#### Tools
- create_issue
- update_pr
[...]

### figma
Design tool integration

#### Tools
- get_components
[...]

## Disabled Servers

### weather (Disabled)
Get weather forecasts and alerts for any location

### spotify (Disabled)
Control Spotify playback and manage playlists

💡 Why This Matters

This takes away the mental overhead of "Did I enable all the right servers?" before working with LLMs. They can see what's available and enable what they need on their own.

Want to see exactly what your LLMs see? Just press 'gd' in the MCPHub UI to preview the current prompt!

📝 Server Descriptions

• By default MCP Servers do not have descriptions. However, in cases like above where we send disabled servers as well, having description might help if the name alone is not clear for LLM to start it.
• Servers added from the Marketplace will get description
• Native servers can have descriptions too
• You can add descriptions to any server in your config:

{
  "mcpServers": {
    "weather": {
      "command": "npx @mcp/weather",
      "description": "Provides real-time weather data and forecasts"
    }
  }
}

🎨 CodeCompanion Users

Tool results now show in chat by default. We convert markdown headers (# to >) to ensure all content appears properly - this fixes an issue where content after headers wasn't being included in the chat.

Try it out and let us know what you think in our Discord!