Xbase++ 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.

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LOCAL nSuccess
LOCAL oMcp
LOCAL oArgs
LOCAL oResult

nSuccess := 0

oMcp := 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.
nSuccess := oMcp:Connect("https://learn.microsoft.com/api/mcp")
IF (nSuccess == 0)
    ? oMcp:LastErrorText
    oMcp:destroy()
    RETURN
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.
oArgs := CreateObject("Chilkat.JsonObject")
oArgs: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.
oResult := CreateObject("Chilkat.JsonObject")
nSuccess := oMcp:CallTool("microsoft_docs_search", oArgs, oResult)
IF (nSuccess == 0)
    ? oMcp:LastErrorText
    oMcp:destroy()
    oArgs:destroy()
    oResult:destroy()
    RETURN
ENDIF

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

oMcp:destroy()
oArgs:destroy()
oResult:destroy()