Enum CodingError 

pub enum CodingError {
    File(FileError),
    Bash(BashError),
    WebFetch(WebFetchError),
    WebSearch(WebSearchError),
    Lsp(LspError),
    NotConfigured(&'static str),
    EmptyFilePath(EmptyFilePathError),
    NotReadBeforeOverwrite(String),
    NotReadBeforeEdit(String),
    ExistsCheckFailed {
        path: String,
        source: Error,
    },
}

Error types for all coding tool operations.

CodingError is the top-level enum returned by the tools exposed by CodingMcp. Each variant wraps a more specific error type.

Variants

• File – File read, write, or edit failures (FileError).
• Bash – Shell command execution failures (BashError).
• WebFetch – URL fetch failures (WebFetchError).
• WebSearch – Web search API failures (WebSearchError).
• Lsp – LSP code-intelligence tool failures (LspError).
• NotConfigured – A tool was called that requires configuration not present (e.g. web search without a Brave API key).
• EmptyFilePath – A required file-path argument was empty.
• NotReadBeforeOverwrite / NotReadBeforeEdit – Read-before-overwrite/edit safety checks failed.
• ExistsCheckFailed – Failed to check whether the target file exists.

Sub-error types

• FileError – NotFound, ReadFailed, WriteFailed, CreateDirFailed, InvalidOffset, PatternNotFound, Io.
• BashError – Forbidden, TimeoutTooLarge, SpawnFailed.
• WebFetchError – InvalidUrl, RequestFailed, Timeout, ResponseTooLarge, ParseFailed.
• WebSearchError – InvalidQuery, ApiError, RateLimited, Timeout, ConfigError, ParseError.

Variants

File(FileError)

File operation errors (read, write, edit)

Bash(BashError)

Bash command execution errors

WebFetch(WebFetchError)

Web fetch errors

WebSearch(WebSearchError)

Web search errors

Lsp(LspError)

LSP tool errors

NotConfigured(&'static str)

Tool not configured/available

EmptyFilePath(EmptyFilePathError)

A required file-path argument was empty

NotReadBeforeOverwrite(String)

An existing file must be read before it may be overwritten

NotReadBeforeEdit(String)

A file must be read before it may be edited

ExistsCheckFailed

Failed to check whether the target file exists

Fields

path: String

source: Error

Trait Implementations

impl Debug for CodingError

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

Formats the value using the given formatter.

impl Display for CodingError

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

Formats the value using the given formatter.

impl Error for CodingError

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<BashError> for CodingError

fn from(source: BashError) -> Self

Converts to this type from the input type.

impl From<EmptyFilePathError> for CodingError

fn from(source: EmptyFilePathError) -> Self

Converts to this type from the input type.

impl From<FileError> for CodingError

fn from(source: FileError) -> Self

Converts to this type from the input type.

impl From<LspError> for CodingError

fn from(source: LspError) -> Self

Converts to this type from the input type.

impl From<WebFetchError> for CodingError

fn from(source: WebFetchError) -> Self

Converts to this type from the input type.

impl From<WebSearchError> for CodingError

fn from(source: WebSearchError) -> Self

Converts to this type from the input type.

impl IntoContents for CodingError

Renders the error as the text content of an errored MCP tool result.

fn into_contents(self) -> Vec<ContentBlock>