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McpHttpClientBuilder

Struct McpHttpClientBuilder

pub struct McpHttpClientBuilder { /* private fields */ }

Available on crate feature tools only.

Expand description

Builder for HTTP-based MCP connections.

This builder creates connections to remote MCP servers using the current MCP Streamable HTTP transport.

§Example

use adk_tool::mcp::{McpHttpClientBuilder, McpAuth, OAuth2Config};

// Simple connection
let toolset = McpHttpClientBuilder::new("https://mcp.example.com/v1")
    .connect()
    .await?;

// With OAuth2 authentication
let toolset = McpHttpClientBuilder::new("https://mcp.example.com/v1")
    .with_auth(McpAuth::oauth2(
        OAuth2Config::new("client-id", "https://auth.example.com/token")
            .with_secret("client-secret")
            .with_scopes(vec!["mcp:read".into()])
    ))
    .timeout(Duration::from_secs(60))
    .connect()
    .await?;

Implementations§

impl McpHttpClientBuilder

pub fn new(endpoint: impl Into<String>) -> McpHttpClientBuilder

Available on crate feature mcp only.

Create a new HTTP client builder for the given endpoint.

§Arguments

endpoint - The MCP server URL (e.g., https://mcp.example.com/v1)

pub fn with_auth(self, auth: McpAuth) -> McpHttpClientBuilder

Available on crate feature mcp only.

Set authentication for the connection.

§Example

let builder = McpHttpClientBuilder::new("https://mcp.example.com")
    .with_auth(McpAuth::bearer("my-token"));

pub fn timeout(self, timeout: Duration) -> McpHttpClientBuilder

Available on crate feature mcp only.

Set the request timeout.

Default is 30 seconds.

Available on crate feature mcp only.

Add a custom header to all requests.

pub fn reinit_on_expired_session(self, enabled: bool) -> McpHttpClientBuilder

Available on crate feature mcp only.

Configure bounded automatic recovery when the server reports an expired session.

Enabled by default. rmcp performs at most one re-initialization attempt.

pub fn with_elicitation_handler( self, handler: Arc<dyn ElicitationHandler>, ) -> McpHttpClientBuilder

Available on crate feature mcp only.

Configure an elicitation handler for the HTTP connection.

When set, use connect_with_elicitation to create a toolset that advertises elicitation capabilities.

pub fn with_resource_notification_handler( self, handler: Arc<dyn ResourceNotificationHandler>, ) -> McpHttpClientBuilder

Available on crate feature mcp only.

Configure a handler for resource and resource-list update notifications.

Use this with connect_with_elicitation; the handler is retained when an expired HTTP session is recreated.

pub fn endpoint(&self) -> &str

Available on crate feature mcp only.

Get the endpoint URL.

pub fn get_timeout(&self) -> Duration

Available on crate feature mcp only.

Get the configured timeout.

pub fn get_auth(&self) -> &McpAuth

Available on crate feature mcp only.

Get the authentication configuration.

pub async fn connect(self) -> Result<(), AdkError>

Available on crate feature mcp and non-crate feature http-transport only.

Connect to the MCP server (stub when http-transport feature is disabled).

pub async fn connect_with_elicitation(self) -> Result<(), AdkError>

Available on crate feature mcp and non-crate feature http-transport only.

Connect with elicitation support (stub when http-transport feature is disabled).

Trait Implementations§

impl Clone for McpHttpClientBuilder

fn clone(&self) -> McpHttpClientBuilder

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for McpHttpClientBuilder

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl !RefUnwindSafe for McpHttpClientBuilder

impl !UnwindSafe for McpHttpClientBuilder

impl Freeze for McpHttpClientBuilder

impl Send for McpHttpClientBuilder

impl Sync for McpHttpClientBuilder

impl Unpin for McpHttpClientBuilder

impl UnsafeUnpin for McpHttpClientBuilder

Blanket Implementations§

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