Struct ProxySettings 

pub struct ProxySettings {
    pub name: String,
    pub version: String,
    pub separator: String,
    pub listen: ListenConfig,
    pub instructions: Option<String>,
    pub shutdown_timeout_seconds: u64,
    pub hot_reload: bool,
    pub import_backends: Option<String>,
    pub rate_limit: Option<GlobalRateLimitConfig>,
    pub tool_discovery: bool,
    pub tool_exposure: ToolExposure,
}

Core proxy identity and server settings.

Fields

name: String

Proxy name, used in MCP server info.

version: String

Proxy version, used in MCP server info (default: “0.1.0”).

separator: String

Namespace separator between backend name and tool/resource name (default: “/”).

listen: ListenConfig

HTTP listen address.

instructions: Option<String>

Optional instructions text sent to MCP clients.

shutdown_timeout_seconds: u64

Graceful shutdown timeout in seconds (default: 30)

hot_reload: bool

Enable hot reload: watch config file for new backends

import_backends: Option<String>

Import backends from a .mcp.json file. Backends defined in the TOML config take precedence over imported ones with the same name.

rate_limit: Option<GlobalRateLimitConfig>

Global rate limit applied to all requests before per-backend dispatch.

tool_discovery: bool

Enable BM25-based tool discovery and search (default: false). Adds proxy/search_tools, proxy/similar_tools, and proxy/tool_categories tools for finding tools across backends.

tool_exposure: ToolExposure

How backend tools are exposed to MCP clients (default: “direct”).

• direct – all tools appear in ListTools responses (default behavior).
• search – only proxy/ meta-tools are listed; backend tools are discoverable via proxy/search_tools and invokable via proxy/call_tool. Useful when aggregating 100+ tools that would overwhelm LLM context. Implies tool_discovery = true.

Trait Implementations

impl Debug for ProxySettings

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ProxySettings

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ProxySettings

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

where __S: Serializer,

Serialize this value into the given Serde serializer.