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.

#include <C_CkMcpW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMcpW mcp;
    HCkJsonObjectW args;
    HCkJsonObjectW result;

    success = FALSE;

    mcp = CkMcpW_Create();

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

    //  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.
    args = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(args,L"query",L"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.
    result = CkJsonObjectW_Create();
    success = CkMcpW_CallTool(mcp,L"microsoft_docs_search",args,result);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMcpW_lastErrorText(mcp));
        CkMcpW_Dispose(mcp);
        CkJsonObjectW_Dispose(args);
        CkJsonObjectW_Dispose(result);
        return;
    }

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


    CkMcpW_Dispose(mcp);
    CkJsonObjectW_Dispose(args);
    CkJsonObjectW_Dispose(result);

    }