Struct ToolDiscoveryConfig 

pub struct ToolDiscoveryConfig {
    pub strategy: ToolDiscoveryStrategyConfig,
    pub top_k: usize,
    pub min_similarity: f32,
    pub embedding_provider: ProviderName,
    pub always_include: Vec<String>,
    pub min_tools_to_filter: usize,
    pub strict: bool,
}

MCP tool discovery configuration (#2321).

Nested under [mcp.tool_discovery]. When strategy = "embedding", the mcp.pruning section is ignored for this session — the embedding path supersedes LLM pruning entirely.

Fields

strategy: ToolDiscoveryStrategyConfig

Discovery strategy. Default: none (all tools, safe default).

top_k: usize

Number of top-scoring tools to include per turn (embedding strategy only).

min_similarity: f32

Minimum cosine similarity for a tool to be included (embedding strategy only).

embedding_provider: ProviderName

Provider name from [[llm.providers]] for embedding computation. Should reference a fast/cheap embedding model. Empty = use the agent’s default embedding provider.

always_include: Vec<String>

Tool names always included regardless of similarity score.

min_tools_to_filter: usize

Minimum tool count below which discovery is skipped (all tools passed through).

strict: bool

When true, treat any embedding failure as a hard error instead of silently falling back to all tools. Default: false (soft fallback).

Trait Implementations

impl Clone for ToolDiscoveryConfig

fn clone(&self) -> ToolDiscoveryConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolDiscoveryConfig

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

Formats the value using the given formatter.

impl Default for ToolDiscoveryConfig

fn default() -> ToolDiscoveryConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ToolDiscoveryConfig

where ToolDiscoveryConfig: Default,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ToolDiscoveryConfig

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.