Rust Requires Chilkat v11.6.0+

List the Resources Offered by an MCP Server

Demonstrates Mcp.ListResources, which calls the MCP resources/list method and places the server's result (a resources array) into a JsonObject.

Tip: Code to parse the returned JSON can be generated with Chilkat's online tool at https://tools.chilkat.io/jsonParse.

Background. The Model Context Protocol (MCP) lets a client interact with a server's tools, resources, and prompts over a standard JSON-RPC interface. This example connects to the public, no-authentication Microsoft Learn MCP server at https://learn.microsoft.com/api/mcp over Streamable HTTP.

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Rust


let mcp = chilkat::Mcp::new();

// Connect to a public MCP (Model Context Protocol) server over its Streamable HTTP endpoint.  The
// Microsoft Learn MCP server is public and requires no authentication.
if mcp.connect("https://learn.microsoft.com/api/mcp").is_err() {
    println!("{}", mcp.last_error_text());
    return;
}

// Call the MCP resources/list method.  On success, the server's result object -- containing a
// "resources" array -- is placed in the JsonObject.  Not all servers expose resources.
let json = chilkat::JsonObject::new();
if mcp.list_resources(&json).is_err() {
    println!("{}", mcp.last_error_text());
    return;
}

json.set_emit_compact(false);
println!("{}", json.emit().unwrap_or_default());
// JSON parsing code for this result can be generated at Chilkat's online tool:
// https://tools.chilkat.io/jsonParse