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Unicode C++ Requires Chilkat v11.6.0+

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.

Background. This exposes the full protocol-level response for inspection or debugging after any MCP request.

Chilkat Unicode C++ Downloads

Unicode C++
#include <CkMcpW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkMcpW mcp;

    //  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(L"https://learn.microsoft.com/api/mcp");
    if (success == false) {
        wprintf(L"%s\n",mcp.lastErrorText());
        return;
    }

    //  Perform an MCP request.
    CkJsonObjectW toolsResult;
    success = mcp.ListTools(toolsResult);
    if (success == false) {
        wprintf(L"%s\n",mcp.lastErrorText());
        return;
    }

    //  Get the complete JSON-RPC response envelope (the jsonrpc, id, and result members) from the most
    //  recent request.
    CkJsonObjectW json;
    mcp.GetLastJsonData(json);

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