Enum ToolCallValidationError 

pub enum ToolCallValidationError {
    ToolNotFound {
        tool_name: String,
        suggestions: Vec<String>,
    },
    InvalidParameters {
        violations: Vec<ValidationError>,
    },
    RequestConstructionError {
        reason: String,
    },
}

Validation errors that occur before tool execution These return as Err(ErrorData) with MCP protocol error codes

Variants

ToolNotFound

Tool not found

Fields

tool_name: String

Name of the tool that was not found

suggestions: Vec<String>

Suggested tool names based on similarity

InvalidParameters

Invalid parameters (unknown names, missing required, constraints)

Fields

violations: Vec<ValidationError>

List of validation errors

RequestConstructionError

Request construction failed (JSON serialization for body)

Fields

reason: String

Description of the construction failure

Implementations

impl ToolCallValidationError

pub fn tool_not_found(tool_name: String, available_tools: &[&str]) -> Self

Create a ToolNotFound error with suggestions based on available tools

Trait Implementations

impl Debug for ToolCallValidationError

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

Formats the value using the given formatter.

impl Display for ToolCallValidationError

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

Formats the value using the given formatter.

impl Error for ToolCallValidationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ToolCallValidationError> for ErrorData

fn from(err: ToolCallValidationError) -> Self

Converts to this type from the input type.

impl From<ToolCallValidationError> for ToolCallError

fn from(source: ToolCallValidationError) -> Self

Converts to this type from the input type.

impl Serialize for ToolCallValidationError

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

where __S: Serializer,

Serialize this value into the given Serde serializer.