PowerBuilder 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.

Chilkat PowerBuilder Downloads

Download Chilkat for PowerBuilder

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Mcp
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

//  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.
loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

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

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_Json