Struct McpServerConfig 

pub struct McpServerConfig {
    pub command: Option<String>,
    pub resolved_path_cache: Option<String>,
    pub args: Option<Vec<String>>,
    pub working_dir: Option<String>,
    pub path_extra: Option<String>,
    pub url: Option<String>,
}

Execution configuration for an MCP server.

This contains the runtime configuration needed to start/connect to a server. For stdio servers, command is required. For SSE servers, url is required.

Fields

command: Option<String>

Command to execute (e.g., “npx” or “/opt/homebrew/bin/npx”). Can be a simple command name (resolved via PATH + platform defaults) or an absolute path. Required for stdio servers.

resolved_path_cache: Option<String>

Cached resolved absolute path to the executable. Populated by the path resolver when command is successfully resolved. Used to avoid repeated PATH searches.

args: Option<Vec<String>>

Arguments to pass to the executable

working_dir: Option<String>

Working directory for the process (must exist if specified)

path_extra: Option<String>

Additional PATH entries to prepend to the child process PATH. Useful for nvm/asdf shims or custom tool locations.

url: Option<String>

URL for SSE connection (e.g., http://localhost:3001/sse) Required for SSE servers.

Implementations

impl McpServerConfig

pub fn stdio( command: impl Into<String>, args: Vec<String>, working_dir: Option<String>, path_extra: Option<String>, ) -> Self

Create a stdio server configuration.

pub fn sse(url: impl Into<String>) -> Self

Create an SSE server configuration.

pub fn validate(&self, server_type: McpServerType) -> Result<(), String>

Validate configuration based on server type.

Returns an error if required fields are missing or invalid for the server type.

Trait Implementations

impl Clone for McpServerConfig

fn clone(&self) -> McpServerConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for McpServerConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for McpServerConfig

fn default() -> McpServerConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for McpServerConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for McpServerConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.