Enum McpServerSource 

pub enum McpServerSource {
    Http {
        url: String,
        timeout_secs: Option<u64>,
        headers: Option<HashMap<String, String>>,
    },
    Process {
        command: String,
        args: Vec<String>,
        work_dir: Option<String>,
        env: Option<HashMap<String, String>>,
    },
    WebSocket {
        url: String,
        timeout_secs: Option<u64>,
        headers: Option<HashMap<String, String>>,
    },
}

Supported MCP server transport sources

Defines the different ways to connect to MCP servers, each optimized for specific use cases and deployment scenarios.

Variants

Http

HTTP-based MCP server using JSON-RPC over HTTP

Best for: Public APIs, RESTful services, servers behind load balancers Features: SSE support, standard HTTP semantics, easy debugging

Fields

url: String

Base URL of the MCP server (http:// or https://)

timeout_secs: Option<u64>

Optional timeout in seconds for HTTP requests Defaults to no timeout if not specified.

headers: Option<HashMap<String, String>>

Optional headers to include in requests (e.g., API keys, custom headers)

Process

Local process-based MCP server using stdin/stdout communication

Best for: Local tools, development servers, sandboxed environments Features: Process isolation, no network overhead, easy deployment

Fields

command: String

Command to execute (e.g., “mcp-server-filesystem”)

args: Vec<String>

Arguments to pass to the command

work_dir: Option<String>

Optional working directory for the process

env: Option<HashMap<String, String>>

Optional environment variables for the process

WebSocket

WebSocket-based MCP server for real-time bidirectional communication

Best for: Interactive applications, real-time data, low-latency requirements Features: Persistent connections, server-initiated notifications, minimal overhead

Fields

url: String

WebSocket URL (ws:// or wss://)

timeout_secs: Option<u64>

Optional timeout in seconds for connection establishment Defaults to no timeout if not specified.

headers: Option<HashMap<String, String>>

Optional headers for the WebSocket handshake

Trait Implementations

impl Clone for McpServerSource

fn clone(&self) -> McpServerSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for McpServerSource

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for McpServerSource

fn deserialize<__D>( __deserializer: __D, ) -> Result<McpServerSource, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for McpServerSource

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

where __S: Serializer,

Serialize this value into the given Serde serializer.