Module plugin 

Plugin System

Extensible plugin architecture for transforming MCP configurations.

Plugins can:

• Transform the canonical config before syncing
• Modify target-specific output
• Add custom server definitions

Built-in Plugins

• env-expander: Expands environment variables in config values

Creating Custom Plugins

Plugins are dynamic libraries (.dylib/.so/.dll) that export a create_plugin function:

#[no_mangle]
pub extern "C" fn create_plugin() -> *mut dyn Plugin {
    Box::into_raw(Box::new(MyPlugin::new()))
}

Structs

EnvExpanderPlugin

Plugin that expands environment variables in configuration values.

PluginManager

Manages plugin loading and execution.

Traits

Plugin

Trait for MCP-Sync plugins.