Struct ToolDefinition 

pub struct ToolDefinition {
    pub name: String,
    pub title: Option<String>,
    pub description: Option<String>,
    pub input_schema: Value,
    pub output_schema: Option<Value>,
    pub icons: Option<Vec<ToolIcon>>,
    pub annotations: Option<ToolAnnotations>,
}

Tool definition as returned by tools/list

Fields

name: String

title: Option<String>

Human-readable title for display purposes

description: Option<String>

input_schema: Value

output_schema: Option<Value>

Optional JSON Schema defining expected output structure

icons: Option<Vec<ToolIcon>>

Optional icons for display in user interfaces

annotations: Option<ToolAnnotations>

Optional annotations describing tool behavior. Note: Clients MUST consider these untrusted unless from a trusted server.

Implementations

impl ToolDefinition

pub fn is_read_only(&self) -> bool

Returns true if the tool does not modify state.

Returns false (the MCP spec default) when annotations are absent.

pub fn is_destructive(&self) -> bool

Returns true if the tool may have destructive effects.

Returns true (the MCP spec default) when annotations are absent.

pub fn is_idempotent(&self) -> bool

Returns true if calling repeatedly with same args has the same effect.

Returns false (the MCP spec default) when annotations are absent.

pub fn is_open_world(&self) -> bool

Returns true if the tool interacts with external entities.

Returns true (the MCP spec default) when annotations are absent.

Trait Implementations

impl Clone for ToolDefinition

fn clone(&self) -> ToolDefinition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolDefinition

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ToolDefinition

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ToolDefinition

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

where __S: Serializer,

Serialize this value into the given Serde serializer.