Enum LettaError 

pub enum LettaError {
    Http(Error),
    Auth {
        message: String,
    },
    Api {
        status: u16,
        message: String,
        code: Option<String>,
        body: ErrorBody,
        url: Option<Url>,
        method: Option<String>,
    },
    Serde(Error),
    Streaming {
        message: String,
        source: Option<Box<dyn Error + Send + Sync>>,
    },
    Config {
        message: String,
    },
    Url(ParseError),
    Io(Error),
    UrlEncoding(Error),
    RequestTimeout {
        seconds: u64,
    },
    RateLimit {
        retry_after: Option<u64>,
    },
    NotFound {
        resource_type: String,
        id: String,
    },
    Validation {
        message: String,
        field: Option<String>,
    },
}

Comprehensive error type for all Letta client operations.

This error type provides detailed context about failures and implements miette::Diagnostic for rich error reporting with suggestions and source code highlighting where applicable.

Variants

Http(Error)

HTTP request failed.

Auth

Authentication failed.

Fields

message: String

Detailed authentication error message.

Api

API returned an error response.

Fields

status: u16

HTTP status code.

message: String

Error message from the API.

code: Option<String>

Optional error code from the API.

body: ErrorBody

Structured error response body.

url: Option<Url>

Request URL that failed.

method: Option<String>

Request method that failed.

Serde(Error)

JSON serialization/deserialization failed.

Streaming

Streaming operation failed.

Fields

message: String

Detailed streaming error message.

source: Option<Box<dyn Error + Send + Sync>>

Source error if available.

Config

Client configuration error.

Fields

message: String

Configuration error message.

Url(ParseError)

URL parsing error.

Io(Error)

I/O operation failed.

UrlEncoding(Error)

URL encoding error.

RequestTimeout

Request timeout.

Fields

seconds: u64

Timeout duration in seconds.

RateLimit

Rate limit exceeded.

Fields

retry_after: Option<u64>

Seconds to wait before retrying.

NotFound

Resource not found.

Fields

resource_type: String

Type of resource that was not found.

id: String

ID of the resource.

Validation

Validation error for request parameters.

Fields

message: String

Validation error message.

field: Option<String>

Field that failed validation, if applicable.

Implementations

impl LettaError

pub fn auth(message: impl Into<String>) -> Self

Create a new authentication error.

pub fn api(status: u16, message: impl Into<String>) -> Self

Create a new API error.

pub fn api_with_code( status: u16, message: impl Into<String>, code: impl Into<String>, ) -> Self

Create a new API error with error code.

pub fn from_response(status: u16, body_str: String) -> Self

Create a new API error from response body. Automatically parses and structures the error body and maps to specific error types.

pub fn from_response_with_headers( status: u16, body_str: String, headers: Option<&HeaderMap>, ) -> Self

Create a new API error from response body with optional headers. Automatically parses and structures the error body and maps to specific error types.

pub fn from_response_with_context( status: u16, body_str: String, headers: Option<&HeaderMap>, url: Option<Url>, method: Option<String>, ) -> Self

Create a new API error from response body with full context. Automatically parses and structures the error body and maps to specific error types.

pub fn api_with_body( status: u16, message: impl Into<String>, body: ErrorBody, ) -> Self

Create a new API error with specific error body.

pub fn streaming(message: impl Into<String>) -> Self

Create a new streaming error.

pub fn streaming_with_source( message: impl Into<String>, source: impl Into<Box<dyn Error + Send + Sync>>, ) -> Self

Create a new streaming error with source.

pub fn config(message: impl Into<String>) -> Self

Create a new configuration error.

pub fn not_found( resource_type: impl Into<String>, id: impl Into<String>, ) -> Self

Create a new not found error.

pub fn validation(message: impl Into<String>) -> Self

Create a new validation error.

pub fn validation_field( message: impl Into<String>, field: impl Into<String>, ) -> Self

Create a new validation error for a specific field.

pub fn request_timeout(seconds: u64) -> Self

Create a new request timeout error.

pub fn rate_limit(retry_after: Option<u64>) -> Self

Create a new rate limit error.

pub fn is_retryable(&self) -> bool

Check if this error is retryable.

pub fn status_code(&self) -> Option<u16>

Get the HTTP status code if this is an API error.

pub fn response_body(&self) -> Option<&ErrorBody>

Get the structured response body if this is an API error.

pub fn error_code(&self) -> Option<&str>

Get the error code if this is an API error.

pub fn is_unauthorized(&self) -> bool

Check if this is a specific type of API error.

pub fn is_validation_error(&self) -> bool

Check if this is a validation error.

pub fn unauthorized_details(&self) -> Option<(&str, &str, &str)>

Get the unauthorized error details if this is an unauthorized error.

Trait Implementations

impl Debug for LettaError

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

Formats the value using the given formatter.

impl Diagnostic for LettaError

fn code<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn help<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn url<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn related<'a>( &'a self, ) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>>

Additional related Diagnostics.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl Display for LettaError

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

Formats the value using the given formatter.

impl Error for LettaError

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<Error> for LettaError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for LettaError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for LettaError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for LettaError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ParseError> for LettaError

fn from(source: ParseError) -> Self

Converts to this type from the input type.

impl Retryable for LettaError

fn is_retryable(&self) -> bool

Check if the error should trigger a retry.

fn retry_after(&self) -> Option<Duration>

Get a custom retry delay if applicable (e.g., from Retry-After header).