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feat(voice): Voice package
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‎README.md‎

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@@ -17,6 +17,7 @@ Symfony AI consists of several lower and higher level **components** and the res
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* **[Agent](src/agent/README.md)**: Framework for building AI agents that can interact with users and perform tasks.
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* **[Chat](src/chat/README.md)**: An unified interface to send messages to agents and store long-term context.
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* **[Store](src/store/README.md)**: Data storage abstraction with indexing and retrieval for AI applications.
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* **[Voice](src/voice/README.md)**: An unified interface to provide TTS / STT / STS for agents and more.
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* **Bundles**
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* **[AI Bundle](src/ai-bundle/README.md)**: Symfony integration for AI Platform, Store and Agent components.
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* **[MCP Bundle](src/mcp-bundle/README.md)**: Symfony integration for official MCP SDK, allowing them to act as MCP servers or clients.

‎docs/components/voice.rst‎

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Symfony AI - Voice Component
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============================

‎src/agent/composer.json‎

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"phpstan/phpdoc-parser": "^2.1",
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"psr/log": "^3.0",
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"symfony/ai-platform": "@dev",
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"symfony/ai-voice": "@dev",
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"symfony/clock": "^7.3|^8.0",
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"symfony/http-client": "^7.3|^8.0",
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"symfony/property-access": "^7.3|^8.0",

‎src/agent/src/Agent.php‎

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use Symfony\AI\Platform\Message\MessageBag;
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use Symfony\AI\Platform\PlatformInterface;
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use Symfony\AI\Platform\Result\ResultInterface;
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use Symfony\AI\Voice\VoiceProviderInterface;
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/**
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* @author Christopher Hertel <[email protected]>

‎src/ai-bundle/config/options.php‎

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->end()
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->end()
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->end()
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->arrayNode('voice')
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->children()
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->arrayNode('eleven_labs')
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->useAttributeAsKey('name')
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->arrayPrototype()
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->children()
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->stringNode('model')->cannotBeEmpty()->end()
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->end()
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->end()
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->end()
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->end()
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->end()
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->arrayNode('vectorizer')
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->info('Vectorizers for converting strings to Vector objects and transforming TextDocument arrays to VectorDocument arrays')
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->useAttributeAsKey('name')

‎src/ai-bundle/src/AiBundle.php‎

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use Symfony\AI\Store\Indexer;
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use Symfony\AI\Store\IndexerInterface;
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use Symfony\AI\Store\StoreInterface;
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use Symfony\AI\Voice\Bridge\ElevenLabs\VoiceProvider as ElevenLabsVoiceProvider;
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use Symfony\AI\Voice\VoiceProviderInterface;
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use Symfony\Component\Clock\ClockInterface;
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use Symfony\Component\Config\Definition\Configurator\DefinitionConfigurator;
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use Symfony\Component\DependencyInjection\Attribute\Target;
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$builder->removeDefinition('ai.command.drop_message_store');
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}
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foreach ($config['voice'] as $voiceProvider => $provider) {
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$this->processVoiceProviderConfig($voiceProvider, $provider, $builder);
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}
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foreach ($config['vectorizer'] ?? [] as $vectorizerName => $vectorizer) {
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$this->processVectorizerConfig($vectorizerName, $vectorizer, $builder);
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}
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$agentDefinition
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->setArgument(2, []) // placeholder until ProcessorCompilerPass process.
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->setArgument(3, []) // placeholder until ProcessorCompilerPass process.
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->setArgument(4, $name)
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->setArgument(5, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))
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->setArgument(4, []) // placeholder until VoiceProviderCompilerPass process.
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->setArgument(5, $name)
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->setArgument(6, new Reference('logger', ContainerInterface::IGNORE_ON_INVALID_REFERENCE))
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;
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$container->setDefinition($agentId, $agentDefinition);
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}
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}
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/**
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* @param array<string, mixed> $providers
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*/
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private function processVoiceProviderConfig(string $name, array $providers, ContainerBuilder $container): void
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{
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if ('eleven_labs' === $name) {
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foreach ($providers as $type => $config) {
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$definition = new Definition(ElevenLabsVoiceProvider::class);
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$definition
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->setLazy(true)
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->setArguments([
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new Reference('ai.platform.eleven_labs'),
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$config['model'],
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])
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->addTag('proxy', ['interface' => VoiceProviderInterface::class])
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->addTag('ai.voice.provider');
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$container->setDefinition('ai.voice.eleven_labs.'.$name, $definition);
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$container->registerAliasForArgument('ai.voice.'.$type.'.'.$name, VoiceProviderInterface::class, $name);
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$container->registerAliasForArgument('ai.voice.'.$type.'.'.$name, VoiceProviderInterface::class, $type.'_'.$name);
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}
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}
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}
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/**
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* @param array<string, mixed> $config
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*/

‎src/ai-bundle/src/DependencyInjection/VoiceProviderCompilerPass.php‎

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\AI\AiBundle\DependencyInjection;
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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/**
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* @author Guillaume Loulier <[email protected]>
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*/
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final class VoiceProviderCompilerPass implements CompilerPassInterface
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{
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public function process(ContainerBuilder $container): void
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{
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$voiceProviders = $container->findTaggedServiceIds('ai.voice.provider');
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}
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}

‎src/voice/.gitattributes‎

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/.github export-ignore
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/tests export-ignore
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.gitattributes export-ignore
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.gitignore export-ignore
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phpstan.dist.neon export-ignore
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phpunit.xml.dist export-ignore
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CLAUDE.md export-ignore
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AGENTS.md export-ignore

‎src/voice/LICENSE‎

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Copyright (c) 2025-present Fabien Potencier
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is furnished
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to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.

‎src/voice/README.md‎

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# Symfony AI - Voice Component
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The Voice component provides a low-level abstraction for Text-To-Speech / Speech-To-Text / Speech-To-Speech features.
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**This Component is experimental**.
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[Experimental features](https://symfony.com/doc/current/contributing/code/experimental.html)
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are not covered by Symfony's
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[Backward Compatibility Promise](https://symfony.com/doc/current/contributing/code/bc.html).
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## Installation
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```bash
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composer require symfony/ai-voice
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```
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**This repository is a READ-ONLY sub-tree split**. See
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https://github.com/symfony/ai to create issues or submit pull requests.
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## Resources
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- [Documentation](../../docs/index.rst)
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- [Report issues](https://github.com/symfony/ai/issues) and
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[send Pull Requests](https://github.com/symfony/ai/pulls)
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in the [main Symfony AI repository](https://github.com/symfony/ai)

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