Get the Last JSON-RPC Response from an MCP Server

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Demonstrates Mcp.GetLastJsonData, which returns the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most recent request into a JsonObject.

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

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;
}

// Perform an MCP request.
let tools_result = chilkat::JsonObject::new();
if mcp.list_tools(&tools_result).is_err() {
    println!("{}", mcp.last_error_text());
    return;
}

// Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
// recent request.
let json = chilkat::JsonObject::new();
mcp.get_last_json_data(&json);

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