Muster
MCP tool management and workflow proxy
What is Muster?
Muster is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp tool management and workflow proxy
MCP tool management and workflow proxy
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- MCP tool management and workflow proxy
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx musterConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Muster
Muster is an MCP proxy and tool management server written in Go that acts as a central hub for multiple MCP servers, exposing meta-tools that let AI agents dynamically discover, filter, and invoke tools from all connected servers without needing to know about each server individually. It provides lifecycle management for MCP servers (start, stop, health monitoring), workflow persistence for recurring agent tasks, and access control to block destructive operations by default. Muster is especially useful in complex agent environments where many MCP servers need to be orchestrated together, such as Kubernetes operations tooling.
Prerequisites
- Go 1.21+ (for building from source) or Homebrew on macOS
- An MCP-compatible AI client such as Cursor, VS Code, or Claude Code
- The underlying MCP servers you want to proxy (e.g., mcp-kubernetes) installed separately
- YAML configuration files for each MCP server to register with Muster
Install Muster
Install via Homebrew on macOS or build from source. Homebrew is the simplest path for most users.
# macOS:
brew tap giantswarm/muster
brew install muster
# From source:
git clone https://github.com/giantswarm/muster.git
cd muster && go build .Create an MCP server registration file
Define one or more MCP servers in YAML format. Each file describes how Muster should launch and manage the server.
# kubernetes-server.yaml
apiVersion: muster.io/v1
kind: MCPServer
name: kubernetes
spec:
type: localCommand
command: ["mcp-kubernetes"]
autoStart: trueRegister the MCP servers with Muster
Use the Muster CLI to register your server definition files.
muster create mcpserver kubernetes-server.yamlAdd Muster to your IDE MCP config
Configure Muster in standalone mode in your IDE (Cursor, VS Code) so the AI agent connects through Muster as a proxy.
{
"mcpServers": {
"muster": {
"command": "muster",
"args": ["standalone"]
}
}
}Discover and invoke tools through the agent
Once connected, use the meta-tools (list_tools, filter_tools, describe_tool, call_tool) to discover and use any tool from any registered server. Example CLI equivalents: muster list_tools, muster filter_tools with a pattern, muster call_tool with resource arguments.
Create reusable workflows
Persist recurring agent task patterns as named workflows with variable interpolation for automation.
Muster Examples
Client configuration
Cursor or VS Code settings.json configuration connecting to Muster in standalone proxy mode.
{
"mcpServers": {
"muster": {
"command": "muster",
"args": ["standalone"]
}
}
}Prompts to try
Example prompts that exercise Muster's tool discovery, filtering, and orchestration capabilities.
- "List all available tools and group them by category"
- "What Kubernetes tools are available through Muster?"
- "List all pods in the default namespace"
- "Find all tools related to deployment and describe what each one does"
- "Run the nightly cleanup workflow with namespace=staging"Troubleshooting Muster
muster command not found after Homebrew install
Run brew link muster to ensure the binary is linked into your PATH. If using the manual build, add the directory containing the muster binary to your PATH variable.
Registered MCP servers fail to start via Muster
Verify the underlying MCP server binary (e.g., mcp-kubernetes) is installed and in PATH. Test it directly by running it outside Muster. Check Muster logs for the specific startup error.
Destructive tool calls are blocked by Muster
By design, Muster blocks destructive operations (delete, destroy, etc.) unless you start it with the --yolo flag. For production use, review which operations are blocked and add specific allow-list rules rather than using --yolo globally.
Frequently Asked Questions about Muster
What is Muster?
Muster is a Model Context Protocol (MCP) server that mcp tool management and workflow proxy It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Muster?
Follow the installation instructions on the Muster GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Muster?
Muster works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Muster free to use?
Yes, Muster is open source and available under the Apache-2.0 license. You can use it freely in both personal and commercial projects.
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Set Up Muster in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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