Pascal (Lazarus/Delphi)

AI Ask with Multiple Tool Function Callbacks

See more AI Examples

This example demonstrates asking a two-part question that should cause the AI to respond with two tool call requests. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Ai,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  sbJs: TStringBuilder;
  ai: TAi;
  evalOnly: Boolean;
  allowAllKeyword: Boolean;
  conversation_name: string;
  sysMessage: string;
  devMessage: string;
  sbResponse: TStringBuilder;

begin
  success := False;

  //  ----------------------------------------------------------------------------------
  //  The Javascript file loaded here is shown at the bottom of this page.
  //  -----------------------------------------------------------------------------------

  //  Load JavaScript containing the tool functions.
  sbJs := TStringBuilder.Create;
  success := sbJs.LoadFile('qa_data/js_tools/toolset_6.js','utf-8');
  if (success = False) then
    begin
      WriteLn(sbJs.LastErrorText);
      Exit;
    end;

  ai := TAi.Create;

  //  Register the tools that will be made available to the AI.
  evalOnly := False;
  allowAllKeyword := True;
  ai.RegisterJsTools(sbJs,evalOnly,allowAllKeyword);

  //  The provider can be "openai", "google", "claude", "grok", "mistral", "custom", etc.
  ai.Provider := 'openai';
  //  Use your provider's API key.
  ai.ApiKey := 'MY_API_KEY';
  //  Choose a model.
  ai.Model := 'gpt-5.6-luna';

  //  Tool function calling must always occur within a conversation.
  conversation_name := 'example_convo';
  sysMessage := 'You are a helpful assistant';
  devMessage := 'Respond with markdown';
  ai.NewConvo(conversation_name,sysMessage,devMessage);

  //  Provide inputs
  ai.InputAddText('What is my horoscope? I am an Aquarius.  Also, what''s the weather in Chicago?');

  //  Send inputs, tool functions, etc. and ask for a "text" response.
  //  If the AI responds with tool calls, Chilkat automatically handles them by calling your JavaScript
  //  tool functions as directed by the AI, and sending results back to the AI until the final
  //  response is received.
  success := ai.Ask('text');
  if (success = False) then
    begin
      WriteLn(ai.LastErrorText);
      Exit;
    end;

  //  Get the AI response.
  sbResponse := TStringBuilder.Create;
  ai.GetOutputTextSb(sbResponse);
  WriteLn(sbResponse.GetAsString());


  sbJs.Free;
  ai.Free;
  sbResponse.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.

JavaScript

// The namespace for the AI tool functions in this JavaScript source file.
Example = {};

// Tool functions must have only one argument, which should be an object.

// The function name used here must match the "name" in the toolRegistry below.
Example.get_weather = function(arg) {
  return {
	  "temperature": 45,
	  "unit": "F",
	  "conditions": "Cloudy"
	};
}

Example.get_horoscope = function(arg) {
  return  `${arg.sign} : Next Tuesday you will befriend a baby otter.`;
}



// The inputSchema.type must ALWAYS be "object".
Example.toolRegistry = [
  {
    name: "get_horoscope",
    description: "Get today's horoscope for an astrological sign.",
    parameters: {
      properties: {
        sign: { type: "string", description: "An astrological sign like Taurus or Aquarius" }
      }
    }
  },
  {
    name: "get_weather",
    description: "Gets the weather at a location.",
    parameters: {
      properties: {
        location: { type: "string", description: "Location such as a city name." },
      }
    }
  }
];


Example.toolPermissions = [
	  {
	    name: "all",
	    perm: "sandbox",
	  }
	  		
	];
	
	
// Return the name of this toolset
// This tells Chilkat the namespace of this toolset.
"Example";