rust-mcp-sdk 0.10.0

An asynchronous SDK and framework for building MCP-Servers and MCP-Clients, leveraging the rust-mcp-schema for type safe MCP Schema Objects.
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use thiserror::Error;

/// Errors that can occur during client-side OAuth flows.
#[derive(Debug, Error)]
pub enum ClientError {
    #[error("metadata discovery failed: {0}")]
    DiscoveryFailed(String),

    #[error("dynamic client registration failed: {0}")]
    RegistrationFailed(String),

    #[error("token exchange failed: {0}")]
    TokenExchangeFailed(String),

    #[error("token refresh failed: {0}")]
    TokenRefreshFailed(String),

    #[error("no registration endpoint available")]
    NoRegistrationEndpoint,

    #[error("no token endpoint available")]
    NoTokenEndpoint,

    #[error("missing required client credentials")]
    MissingCredentials,

    #[error("invalid server response: {0}")]
    InvalidResponse(String),

    #[error("HTTP transport error: {0}")]
    Http(#[from] reqwest::Error),

    #[error("URL parse error: {0}")]
    Url(#[from] url::ParseError),

    #[error("JSON deserialization error: {0}")]
    Json(#[from] serde_json::Error),

    #[error("{0}")]
    Other(String),
}

pub type ClientResult<T> = Result<T, ClientError>;