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Version: 1.1.0

Task Store

Task stores provide persistence for MCP Tasks, allowing the client to poll for completion.

InMemoryTaskStore​

use rust_mcp_sdk::task_store::InMemoryTaskStore;

let task_store = Arc::new(InMemoryTaskStore::new(None)); // None = default page size (50)

Using Task Stores​

Task stores are configured in the server options:

use rust_mcp_sdk::{
    mcp_server::{server_runtime, McpServerOptions},
    ToMcpServerHandler,
};

let server = server_runtime::create_server(McpServerOptions {
    server_details,
    transport,
    handler: handler.to_mcp_server_handler(),
    task_store: Some(Arc::new(InMemoryTaskStore::new(None))),
    client_task_store: Some(Arc::new(InMemoryTaskStore::new(None))),
    message_observer: None,
});
  • task_store - for tasks initiated by the client (server processes, client polls)
  • client_task_store - for tasks initiated by the server (server polls for result)

For production, implement ServerTaskStore and ClientTaskStore traits with a persistent backend.