Pascal (Lazarus/Delphi)

AI: Diagnosing an Ask Failure

See more AI Examples

Demonstrates how to get information about why a request to the AI provider failed. 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.StringBuilder,
  Chilkat.Ai,
  Chilkat.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  ai: TAi;
  json: TJsonObject;
  sbResponse: TStringBuilder;

begin
  success := False;

  //  This example assumes the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  ai := TAi.Create;

  //  The provider can be "openai", "google", "claude", "deepseek", "xai", or "perplexity".
  //  Support for additional providers will be added in future versions of Chilkat.
  ai.Provider := 'openai';

  //  In this case, we're going to cause an intentional failure by using an invalid API key.
  ai.ApiKey := 'sk-11111111111111111111111111111111111111111111111k';

  //  Choose a model.
  ai.Model := 'gpt-4o';

  //  Add a text input.
  ai.InputAddText('Say Hello.');

  //  Ask the AI for text output.
  success := ai.Ask('text');
  if (success = False) then
    begin
      //  If the response status code equals 0, it means the error occurred before receiving the HTTP response.
      //  For this case look at the LastErrorText.
      if (ai.ResponseStatusCode = 0) then
        begin
          WriteLn(ai.LastErrorText);
        end
      else
        begin
          //  If we received an error response, the status code will be >= 400.
          //  (Ask would've returned True if the response status code was 200.)
          WriteLn('Response status code: ' + ai.ResponseStatusCode);

          //  The error response (JSON) is available in the LastJsonData.
          json := TJsonObject.Create;
          json.EmitCompact := False;
          ai.GetLastJsonData(json);
          WriteLn(json.Emit());

          //  Sample output:
          //  {
          //    "error": {
          //      "message": "Incorrect API key provided: sk-11111***************************************111k. You can find your API key at https://platform.openai.com/account/api-keys.",
          //      "type": "invalid_request_error",
          //      "param": null,
          //      "code": "invalid_api_key"
          //    }
          //  }
        end;
      Exit;
    end;

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


  ai.Free;
          json.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.