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fix: usage of Claude without system prompt #272

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Apr 12, 2025
Merged

fix: usage of Claude without system prompt #272

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12 changes: 6 additions & 6 deletions examples/toolbox-wikipedia.php
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
<?php

use PhpLlm\LlmChain\Bridge\OpenAI\GPT;
use PhpLlm\LlmChain\Bridge\OpenAI\PlatformFactory;
use PhpLlm\LlmChain\Bridge\Anthropic\Claude;
use PhpLlm\LlmChain\Bridge\Anthropic\PlatformFactory;
use PhpLlm\LlmChain\Chain;
use PhpLlm\LlmChain\Chain\Toolbox\ChainProcessor;
use PhpLlm\LlmChain\Chain\Toolbox\Tool\Wikipedia;
Expand All @@ -14,13 +14,13 @@
require_once dirname(__DIR__).'/vendor/autoload.php';
(new Dotenv())->loadEnv(dirname(__DIR__).'/.env');

if (empty($_ENV['OPENAI_API_KEY'])) {
echo 'Please set the OPENAI_API_KEY environment variable.'.PHP_EOL;
if (empty($_ENV['ANTHROPIC_API_KEY'])) {
echo 'Please set the ANTHROPIC_API_KEY environment variable.'.PHP_EOL;
exit(1);
}

$platform = PlatformFactory::create($_ENV['OPENAI_API_KEY']);
$llm = new GPT(GPT::GPT_4O_MINI);
$platform = PlatformFactory::create($_ENV['ANTHROPIC_API_KEY']);
$llm = new Claude();

$wikipedia = new Wikipedia(HttpClient::create());
$toolbox = Toolbox::create($wikipedia);
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12 changes: 7 additions & 5 deletions src/Bridge/Anthropic/ModelHandler.php
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Original file line number Diff line number Diff line change
Expand Up @@ -61,12 +61,10 @@ public function request(Model $model, object|array|string $input, array $options
$options['tool_choice'] = ['type' => 'auto'];
}

$system = $input->getSystemMessage();
$body = array_merge($options, [
$body = [
'model' => $model->getVersion(),
'system' => $system->content,
'messages' => $input->withoutSystemMessage()->jsonSerialize(),
]);
];

$body['messages'] = array_map(static function (MessageInterface $message) {
if ($message instanceof ToolCallMessage) {
Expand Down Expand Up @@ -98,12 +96,16 @@ public function request(Model $model, object|array|string $input, array $options
return $message;
}, $body['messages']);

if ($system = $input->getSystemMessage()) {
$body['system'] = $system->content;
}

return $this->httpClient->request('POST', 'https://api.anthropic.com/v1/messages', [
'headers' => [
'x-api-key' => $this->apiKey,
'anthropic-version' => $this->version,
],
'json' => $body,
'json' => array_merge($options, $body),
]);
}

Expand Down