Axum Backend

Add rust-mcp-axum to your dependencies:

[dependencies]
rust-mcp-axum = "1.0"
rust-mcp-sdk = { version = "1.0", default-features = false, features = ["server", "macros"] }

Creating an Axum MCP Server

use rust_mcp_axum::{create_axum_server, AxumServerOptions};

let server = create_axum_server(
    server_info,
    handler.to_mcp_server_handler(),
    AxumServerOptions {
        host: "127.0.0.1".into(),
        port: 8080,
        event_store: Some(Arc::new(InMemoryEventStore::default())),
        task_store: Some(Arc::new(InMemoryTaskStore::new(None))),
        auth: None, // or Some(Arc::new(auth_provider))
        health_endpoint: Some("/health".into()),
        sse_support: true,
        ..Default::default()
    },
);
server.start().await?;

AxumServerOptions

Field	Type	Default	Description
host	String	"127.0.0.1"	Bind address
port	u16	8080	Port number
event_store	Option<Arc<dyn EventStore>>	None	For resumability
task_store	Option<Arc<ServerTaskStore>>	None	Server-side tasks
client_task_store	Option<Arc<ClientTaskStore>>	None	Client-side tasks
auth	Option<Arc<dyn AuthProvider>>	None	OAuth provider
health_endpoint	Option<String>	None	Health check path
health_handler	Option<Arc<dyn HealthHandler>>	None	Custom health handler
max_request_body_size	Option<usize>	None (4 MiB)	Max request body size in bytes
session_store	Option<Arc<dyn SessionStore>>	None	Custom session backend
enable_ssl / ssl_cert_path / ssl_key_path	see TLS/SSL	disabled	TLS configuration
dns_rebinding	DnsRebindingOptions	enabled	DNS rebinding protection (allowed_hosts, allowed_origins)
sse_support	bool	true	Enable SSE fallback

See AxumServerOptions for all fields.