Call a Tool on an MCP Server

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Demonstrates Mcp.CallTool, which calls the MCP tools/call method for a named tool, passing a JSON arguments object and receiving the tool's result. The example calls the Microsoft Learn microsoft_docs_search tool.

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

use strict;
use warnings;
use Chilkat2;

my $mcp = Chilkat2::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.
my $success = $mcp->Connect('https://learn.microsoft.com/api/mcp');
if (!$success) {
    print $mcp->LastErrorText, "\n";
    exit;
}

# Build the tool's input arguments.  The members required depend on the tool's input schema (see
# ListTools).  Here the Microsoft Learn "microsoft_docs_search" tool takes a search query.
my $args = Chilkat2::JsonObject->new;
$args->UpdateString('query', 'How do I create an Azure storage account?');

# Call the MCP tools/call method for the named tool.  The tool's result is placed in the result
# JsonObject.
my $result = Chilkat2::JsonObject->new;
$success = $mcp->CallTool('microsoft_docs_search', $args, $result);
if (!$success) {
    print $mcp->LastErrorText, "\n";
    exit;
}

$result->EmitCompact(0);
print $result->Emit(), "\n";
# JSON parsing code for this result can be generated at Chilkat's online tool:
# https://tools.chilkat.io/jsonParse