Visual FoxPro Requires Chilkat v11.6.0+

Call a Tool on an MCP Server

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.

Background. The members of the arguments object are defined by the tool's input schema, which is reported by ListTools. This example uses the public, no-authentication Microsoft Learn MCP server.

Chilkat Visual FoxPro Downloads

Download Chilkat for Visual FoxPro

Visual FoxPro

LOCAL lnSuccess
LOCAL loMcp
LOCAL loArgs
LOCAL loResult

lnSuccess = 0

loMcp = CreateObject('Chilkat.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.
lnSuccess = loMcp.Connect("https://learn.microsoft.com/api/mcp")
IF (lnSuccess = 0) THEN
    ? loMcp.LastErrorText
    RELEASE loMcp
    CANCEL
ENDIF

*  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.
loArgs = CreateObject('Chilkat.JsonObject')
loArgs.UpdateString("query","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.
loResult = CreateObject('Chilkat.JsonObject')
lnSuccess = loMcp.CallTool("microsoft_docs_search",loArgs,loResult)
IF (lnSuccess = 0) THEN
    ? loMcp.LastErrorText
    RELEASE loMcp
    RELEASE loArgs
    RELEASE loResult
    CANCEL
ENDIF

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

RELEASE loMcp
RELEASE loArgs
RELEASE loResult