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.

integer li_rc
integer li_Success
oleobject loo_Mcp
oleobject loo_ToolsResult
oleobject loo_Json

li_Success = 0

loo_Mcp = create oleobject
li_rc = loo_Mcp.ConnectToNewObject("Chilkat.Mcp")
if li_rc < 0 then
    destroy loo_Mcp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  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.
li_Success = loo_Mcp.Connect("https://learn.microsoft.com/api/mcp")
if li_Success = 0 then
    Write-Debug loo_Mcp.LastErrorText
    destroy loo_Mcp
    return
end if

//  Perform an MCP request.
loo_ToolsResult = create oleobject
li_rc = loo_ToolsResult.ConnectToNewObject("Chilkat.JsonObject")

li_Success = loo_Mcp.ListTools(loo_ToolsResult)
if li_Success = 0 then
    Write-Debug loo_Mcp.LastErrorText
    destroy loo_Mcp
    destroy loo_ToolsResult
    return
end if

//  Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
//  recent request.
loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Mcp.GetLastJsonData(loo_Json)

loo_Json.EmitCompact = 0
Write-Debug loo_Json.Emit()
//  JSON parsing code for this result can be generated at Chilkat's online tool:
//  https://tools.chilkat.io/jsonParse


destroy loo_Mcp
destroy loo_ToolsResult
destroy loo_Json