Struct McpBridge 

pub struct McpBridge { /* private fields */ }

MCP bridge — connects multiple MCP servers to the tool system.

McpBridge owns the collection of registered MCP server configurations and manages McpClient instances for active servers.

Example

let mut bridge = McpBridge::new();
bridge.register_server(McpServer::new("files", "npx")
    .with_args(vec!["-y", "@anthropic/mcp-server-filesystem"]));

// Initialize all servers
bridge.initialize_all().await?;

// List all tools across all servers
let tools = bridge.list_tools().await?;

Implementations

impl McpBridge

pub fn new() -> McpBridge

Create a new empty MCP bridge

pub fn register_server(&self, server: McpServer)

Register an MCP server configuration (does not start the process).

pub fn servers(&self) -> Vec<String>

Get all registered server configurations (names only).

pub fn get_server(&self, name: &str) -> Option<McpServer>

Get a server configuration by name.

pub async fn initialize_all(&self) -> Result<(), Error>

Initialize all enabled MCP servers.

Each server is spawned as a child process and receives the initialize request. Servers that fail to initialize are logged but do not cause a total failure.

pub async fn initialize_server(&self, name: &str) -> Result<(), Error>

Initialize a specific server by name.

pub async fn client(&self, name: &str) -> Option<Arc<McpClient>>

Get a client by server name.

pub async fn list_tools(&self) -> Result<Vec<McpTool>, Error>

List all available tools from all initialized MCP servers.

Tools are collected from each server’s cache (refreshed on demand).

pub async fn cached_tools(&self, server_name: &str) -> Option<Vec<McpTool>>

Get cached tools for a specific server.

pub async fn call_tool( &self, server_name: &str, tool_name: &str, args: Value, ) -> Result<McpToolCallResult, Error>

Call an MCP tool on a specific server.

pub async fn shutdown_all(&self) -> Result<(), Error>

Shutdown all connected MCP server processes.

pub async fn refresh_tools( &self, server_name: &str, ) -> Result<Vec<McpTool>, Error>

Refresh tools from a specific server.

pub async fn clear_cache(&self, server_name: &str)

Clear the tool cache for a server.

pub async fn remove_server(&self, name: &str) -> Result<(), Error>

Remove a server by name (disconnects client if active, removes config).

pub async fn toggle_server(&self, name: &str) -> Result<bool, Error>

Toggle a server’s enabled flag. Returns the new enabled state.

pub async fn clear_all_caches(&self)

Clear all caches.

Trait Implementations

impl Default for McpBridge

fn default() -> McpBridge

Returns the “default value” for a type.