Struct Validator

pub struct Validator;

Protocol validation utilities

Implementations

impl Validator

pub fn validate_uuid(uuid_str: &str) -> Result<Uuid, Error>

Validate a UUID string

Errors

Returns an error if the string is not a valid UUID format

pub fn validate_non_empty(value: &str, field_name: &str) -> Result<(), Error>

Validate that a string is not empty

Errors

Returns an error if the string is empty or contains only whitespace

pub fn validate_tool_name(name: &str) -> Result<(), Error>

Validate a tool name (must be alphanumeric with underscores)

Errors

Returns an error if the name is empty or contains invalid characters

pub fn validate_resource_uri(uri: &str) -> Result<(), Error>

Validate a resource URI

Errors

Returns an error if the URI is empty or contains control characters

pub fn validate_json_schema(schema: &Value) -> Result<(), Error>

Validate JSON schema

Errors

Returns an error if the schema is not a valid JSON object with a type field

pub fn validate_tool_arguments( args: &HashMap<String, Value>, schema: &Value, ) -> Result<(), Error>

Validate tool arguments against a schema

Errors

Returns an error if required arguments are missing from the provided arguments

pub fn validate_pagination( cursor: Option<&str>, limit: Option<u32>, ) -> Result<(), Error>

Validate pagination parameters

Errors

Returns an error if cursor is empty, limit is 0, or limit exceeds 1000

pub fn validate_prompt_name(name: &str) -> Result<(), Error>

Validate prompt name

Errors

Returns an error if the name is empty or contains invalid characters

pub fn validate_struct<T>(item: &T) -> Result<(), Error>

where T: Validate,

Validate a struct using the validator crate

Errors

Returns an error if the struct fails validation according to its validation rules

pub fn validate_structured_content( content: &Value, output_schema: &Value, ) -> Result<(), Error>

Validate structured content against a JSON schema

Errors

Returns an error if the content doesn’t match the schema or if the schema is invalid

pub fn validate_tool_output_schema(output_schema: &Value) -> Result<(), Error>

Validate that a tool’s output schema is properly defined

Errors

Returns an error if the output schema is invalid or incompatible with MCP requirements

pub fn format_validation_errors<'a>( errors: impl Iterator<Item = ValidationError<'a>>, ) -> String

Extract validation errors in a user-friendly format

Errors

Returns formatted validation error messages