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.

require 'chilkat'

success = false

mcp = Chilkat::CkMcp.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.
success = mcp.Connect("https://learn.microsoft.com/api/mcp")
if (success == false)
    print mcp.lastErrorText() + "\n";
    exit
end

#  Perform an MCP request.
toolsResult = Chilkat::CkJsonObject.new()
success = mcp.ListTools(toolsResult)
if (success == false)
    print mcp.lastErrorText() + "\n";
    exit
end

#  Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
#  recent request.
json = Chilkat::CkJsonObject.new()
mcp.GetLastJsonData(json)

json.put_EmitCompact(false)
print json.emit() + "\n";
#  JSON parsing code for this result can be generated at Chilkat's online tool:
#  https://tools.chilkat.io/jsonParse