minor #545 [Run examples] Remove usage of Agent when not needed (MelaineGerard)

This PR was squashed before being merged into the main branch.

Discussion
----------

[Run examples] Remove usage of `Agent` when not needed

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        | Fix #522
| License       | MIT

Remove usage of agents when not needed

Tasklist :

- [x] Albert
- [x] Anthropic
- [x] Azure
- [x] Bedrock
- [x] Cerebras
- [x] Commands
- [x] Document
- [x] ElevenLabs
- [x] Gemini
- [x] HuggingFace
- [x] Indexer
- [x] LMStudio
- [x] Memory
- [x] Misc
- [x] Mistral
- [x] Ollama
- [x] OpenAI
- [x] OpenRouter
- [x] Perplexity
- [x] Rag
- [x] Replicate
- [x] Toolbox
- [x] Transformers
- [x] VertexAI
- [x] Voyage

Commits
-------

9a6bf94 [Run examples] Remove usage of `Agent` when not needed

Author: OskarStark

examples/albert/chat.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Albert\PlatformFactory;
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
 use Symfony\AI\Platform\Message\Message;
@@ -20,7 +19,6 @@
 $platform = PlatformFactory::create(env('ALBERT_API_KEY'), env('ALBERT_API_URL'), http_client());
 
 $model = new Gpt('gpt-4o');
-$agent = new Agent($platform, $model, logger: logger());
 
 $documentContext = <<<'CONTEXT'
     Document: AI Strategy of France
@@ -44,6 +42,6 @@
     Message::ofUser('What are the main objectives of France\'s AI strategy?'),
 );
 
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/chat.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Message;
@@ -20,11 +19,10 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude(Claude::SONNET_37);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You are a pirate and you write funny.'),
     Message::ofUser('What is the Symfony framework?'),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/image-input-binary.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Content\Image;
@@ -21,14 +20,13 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude(Claude::SONNET_37);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You are an image analyzer bot that helps identify the content of images.'),
     Message::ofUser(
         Image::fromFile(dirname(__DIR__, 2).'/fixtures/image.jpg'),
         'Describe this image.',
     ),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/image-input-url.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Content\ImageUrl;
@@ -21,14 +20,13 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude(Claude::SONNET_37);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You are an image analyzer bot that helps identify the content of images.'),
     Message::ofUser(
         new ImageUrl('https://upload.wikimedia.org/wikipedia/commons/a/a7/Camponotus_flavomarginatus_ant.jpg'),
         'Describe this image.',
     ),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/pdf-input-binary.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Content\Document;
@@ -21,13 +20,12 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude(Claude::SONNET_37);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::ofUser(
         Document::fromFile(dirname(__DIR__, 2).'/fixtures/document.pdf'),
         'What is this document about?',
     ),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/pdf-input-url.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Content\DocumentUrl;
@@ -21,13 +20,12 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude(Claude::SONNET_37);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::ofUser(
         new DocumentUrl('https://upload.wikimedia.org/wikipedia/commons/2/20/Re_example.pdf'),
         'What is this document about?',
     ),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/anthropic/stream.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Anthropic\PlatformFactory;
 use Symfony\AI\Platform\Message\Message;
@@ -20,16 +19,13 @@
 $platform = PlatformFactory::create(env('ANTHROPIC_API_KEY'), httpClient: http_client());
 $model = new Claude();
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You are a thoughtful philosopher.'),
     Message::ofUser('What is the purpose of an ant?'),
 );
-$result = $agent->call($messages, [
-    'stream' => true, // enable streaming of response text
-]);
+$result = $platform->invoke($model, $messages, ['stream' => true]);
 
-foreach ($result->getContent() as $word) {
+foreach ($result->getResult()->getContent() as $word) {
     echo $word;
 }
 echo \PHP_EOL;

examples/azure/chat-gpt.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Azure\OpenAi\PlatformFactory;
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
 use Symfony\AI\Platform\Message\Message;
@@ -26,11 +25,10 @@
 );
 $model = new Gpt(Gpt::GPT_4O_MINI);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You are a pirate and you write funny.'),
     Message::ofUser('What is the Symfony framework?'),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/azure/chat-llama.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Azure\Meta\PlatformFactory;
 use Symfony\AI\Platform\Bridge\Meta\Llama;
 use Symfony\AI\Platform\Message\Message;
@@ -20,14 +19,13 @@
 $platform = PlatformFactory::create(env('AZURE_LLAMA_BASEURL'), env('AZURE_LLAMA_KEY'), http_client());
 $model = new Llama(Llama::V3_3_70B_INSTRUCT);
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(Message::ofUser('I am going to Paris, what should I see?'));
-$result = $agent->call($messages, [
+$result = $platform->invoke($model, $messages, [
     'max_tokens' => 2048,
     'temperature' => 0.8,
     'top_p' => 0.1,
     'presence_penalty' => 0,
     'frequency_penalty' => 0,
 ]);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;

examples/bedrock/chat-claude.php

@@ -9,7 +9,6 @@
  * file that was distributed with this source code.
  */
 
-use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\Anthropic\Claude;
 use Symfony\AI\Platform\Bridge\Bedrock\PlatformFactory;
 use Symfony\AI\Platform\Message\Message;
@@ -26,11 +25,10 @@
 $platform = PlatformFactory::create();
 $model = new Claude('claude-3-7-sonnet-20250219');
 
-$agent = new Agent($platform, $model, logger: logger());
 $messages = new MessageBag(
     Message::forSystem('You answer questions in short and concise manner.'),
     Message::ofUser('What is the Symfony framework?'),
 );
-$result = $agent->call($messages);
+$result = $platform->invoke($model, $messages);
 
-echo $result->getContent().\PHP_EOL;
+echo $result->getResult()->getContent().\PHP_EOL;