Struct Config

pub struct Config {
    pub mcp_servers: HashMap<String, ServerConfig>,
}

Main configuration for the MCP Runner.

This structure holds configurations for multiple MCP servers that can be managed by the runner. Each server has a unique name and its own configuration.

JSON Schema

The configuration follows this JSON schema:

{
  "mcpServers": {
    "server1": {
      "command": "node",
      "args": ["server.js"],
      "env": {
        "PORT": "3000",
        "DEBUG": "true"
      }
    },
    "server2": {
      "command": "python",
      "args": ["-m", "mcp_server"],
      "env": {}
    }
  }
}

Examples

Loading a configuration from a file:

use mcp_runner::config::Config;

let config = Config::from_file("config.json").unwrap();

Accessing a server configuration:

use mcp_runner::config::{Config, ServerConfig};

if let Some(server_config) = config.mcp_servers.get("fetch") {
    println!("Command: {}", server_config.command);
}

Fields

mcp_servers: HashMap<String, ServerConfig>

Map of server names to their configurations. The key is a unique identifier for each server.

Implementations

impl Config

pub fn from_file(path: impl AsRef<Path>) -> Result<Self>

Loads a configuration from a file path.

This method reads the file at the specified path and parses its contents as a JSON configuration.

Arguments

• path - The path to the configuration file

Returns

A Result<Config> that contains the parsed configuration or an error

Errors

Returns an error if:

• The file cannot be read
• The file contents are not valid JSON
• The JSON does not conform to the expected schema

pub fn parse_from_str(content: &str) -> Result<Self>

Parses a configuration from a JSON string.

Arguments

• content - A string containing JSON configuration

Returns

A Result<Config> that contains the parsed configuration or an error

Errors

Returns an error if:

• The string is not valid JSON
• The JSON does not conform to the expected schema

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Config

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Config

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

where __S: Serializer,

Serialize this value into the given Serde serializer.