Struct McpConfig 

pub struct McpConfig {
    pub title: Option<String>,
    pub description: Option<String>,
    pub instructions: Option<String>,
    pub tool_prefix: Option<ToolPrefix>,
}

Optional overrides for the text mcpls reports about itself over MCP.

Every field is None by default, which keeps today’s hardcoded serverInfo.title/description and built-in capability blurb unchanged. serverInfo.name, version, and website_url are not configurable here: name is the MCP-spec machine identifier asserted in integration tests, and version/website_url are project metadata, not presentation text.

A configured instructions replaces the built-in capability blurb in ServerInfo.instructions rather than appending to it – an agent that reads instructions at connection time (see skills/mcpls/SKILL.md) sees only the configured text, plus the unrelated untrusted-project-config NOTE (see ServerConfig::project_config_ignored), which is always appended afterward regardless of this field.

Every field reaches an MCP client verbatim on every initialize response, into what is typically an LLM context window – this is why ServerConfig::validate enforces the MAX_MCP_* byte caps on all three.

Examples

use mcpls_core::config::ServerConfig;

let toml = r#"
    [mcp]
    title = "My Custom Bridge"
    description = "Internal LSP bridge for Acme Corp"
    instructions = "Use get_hover before get_definition."
"#;
let config: ServerConfig = toml::from_str(toml).unwrap();
assert_eq!(config.mcp.title.as_deref(), Some("My Custom Bridge"));

Fields

title: Option<String>

Overrides serverInfo.title. Omit to keep the built-in title.

description: Option<String>

Overrides serverInfo.description. Omit to keep the built-in description (CARGO_PKG_DESCRIPTION).

instructions: Option<String>

Replaces the built-in ServerInfo.instructions capability blurb. Omit to keep the built-in text. The untrusted-project-config NOTE (see ServerConfig::project_config_ignored) is still appended after this value when set.

tool_prefix: Option<ToolPrefix>

Prefixes every MCP tool name with {tool_prefix}_, so an MCP client running multiple mcpls bridges concurrently (one per project) can tell their tools apart. Omit to keep the default, unprefixed tool names.

Trait Implementations

impl Clone for McpConfig

fn clone(&self) -> McpConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for McpConfig

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

Formats the value using the given formatter.

impl Default for McpConfig

fn default() -> McpConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for McpConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for McpConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.