Delphi DLL

Automatic JS AI Tool Calling with Supporting JS Sources

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Demonstrates an automatic JavaScript tool function calling where JavaScript code can be loaded from additional scripts that don't include a tool registry. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Ai, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
sbJs: HCkStringBuilder;
ai: HCkAi;
sbExtraJs: HCkStringBuilder;
evalOnly: Boolean;
allowAllKeyword: Boolean;
conversation_name: PWideChar;
sysMessage: PWideChar;
devMessage: PWideChar;
sbResponse: HCkStringBuilder;

begin
success := False;

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

// In this example, we'll load the Javascript tool functions and registry from a file.
sbJs := CkStringBuilder_Create();
success := CkStringBuilder_LoadFile(sbJs,'qa_data/js_tools/toolset_5.js','utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add(CkStringBuilder__lastErrorText(sbJs));
    Exit;
  end;

ai := CkAi_Create();

// Additional JavaScript code can be loaded into the AI object's internal JS engine
// by calling RegisterJsTools with evalOnly = True.
sbExtraJs := CkStringBuilder_Create();
CkStringBuilder_Append(sbExtraJs,'function getOrderTotal({ order_id }) { return 149.95; }');

// When evalOnly equals True, it tells Chilkat that no toolRegistry will be present.
// The purpose for doing the eval is to add function definitions to the global namespace.
// The value passed for allowAllKeyword is meaningless (not used) when evalOnly = True.
evalOnly := True;
allowAllKeyword := True;
CkAi_RegisterJsTools(ai,sbExtraJs,evalOnly,allowAllKeyword);

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

// The provider can be "openai", "google", "claude", "grok", "mistral", "custom", etc.
CkAi_putProvider(ai,'openai');
// Use your provider's API key.
CkAi_putApiKey(ai,'MY_API_KEY');
// Choose a model.
CkAi_putModel(ai,'gpt-5-mini');

// Tool function calling must always occur within a conversation.
conversation_name := 'convo_4';
sysMessage := 'You are a helpful business assistant';
devMessage := 'Respond only with a information generated by a tool.';
CkAi_NewConvo(ai,conversation_name,sysMessage,devMessage);

// Provide inputs
CkAi_InputAddText(ai,'What is the total for order A123?');

// 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 := CkAi_Ask(ai,'text');
if (success = False) then
  begin
    Memo1.Lines.Add(CkAi__lastErrorText(ai));
    Exit;
  end;

// Get the AI response.
sbResponse := CkStringBuilder_Create();
CkAi_GetOutputTextSb(ai,sbResponse);
Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponse));

CkStringBuilder_Dispose(sbJs);
CkAi_Dispose(ai);
CkStringBuilder_Dispose(sbExtraJs);
CkStringBuilder_Dispose(sbResponse);

end;