matesofmate/composer-extension

MCP extension providing Composer dependency management tools for AI assistants

0.2.0 2026-04-14 12:20 UTC

Requires

• php: >=8.2
• matesofmate/common: ^0.2@dev
• symfony/ai-mate: ^0.7
• symfony/finder: ^5.4|^6.4|^7.3|^8.0
• symfony/process: ^5.4|^6.4|^7.3|^8.0

Requires (Dev)

• friendsofphp/php-cs-fixer: ^3.0
• phpstan/phpstan: ^2.0
• phpstan/phpstan-phpunit: ^2.0
• phpunit/phpunit: ^10.0
• rector/rector: ^2.0

Suggests

• helgesverre/toon: Install for TOON-encoded MCP responses; JSON remains the fallback when it is not available

MIT

• Johannes Wachter

• symfony
• composer
• ai
• mcp
• dependency-management
• toon
• ai-mate

README

Composer dependency management tools for AI assistants, with compact encoded output tailored for token-efficient workflows.

Features

• install, require, remove, update, and explain Composer operations
• composer://config resource for project dependency context
• core Mate encoded output for compact responses
• custom command support for Docker or wrapper-based setups

Installation

composer require --dev matesofmate/composer-extension
vendor/bin/mate init

In current AI Mate setups, extension discovery is handled automatically after Composer install and update. Use vendor/bin/mate discover when you want to refresh discovery artifacts such as mate/AGENT_INSTRUCTIONS.md.

Use these commands when troubleshooting:

vendor/bin/mate debug:extensions
vendor/bin/mate debug:capabilities
vendor/bin/mate mcp:tools:list --extension=matesofmate/composer-extension

For Codex, use the generated wrapper:

./bin/codex

Custom Command Configuration

If Composer must run through Docker or another wrapper, configure matesofmate_composer.custom_command.

use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $container): void {
    $container->parameters()->set('matesofmate_composer.custom_command', [
        'docker', 'compose', 'exec', 'php', 'composer',
    ]);
};

Requirements

• PHP 8.2+
• Symfony AI Mate 0.7+ required
• Composer available locally, or matesofmate_composer.custom_command configured

Available Tools

• composer-install
• composer-remove
• composer-require
• composer-update
• composer-explain

All tools return encoded strings through Mate's core ResponseEncoder. Install the suggested helgesverre/toon package if you want TOON responses; otherwise the same payload falls back to JSON.

Available Resource

• composer://config

This resource exposes composer.json content as an encoded structured payload.

Development

composer install
composer test
composer lint
composer fix

Contributing

Contributions are welcome. See CONTRIBUTING.md.

License

MIT