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php-llm/mcp-sdk
===============

Model Context Protocol SDK for Client and Server applications in PHP

0.1(10mo ago)35494↑1566.7%3[2 issues](https://github.com/php-llm/mcp-sdk/issues)MITPHPPHP ^8.2CI failing

Since Mar 30Pushed 8mo ago4 watchersCompare

[ Source](https://github.com/php-llm/mcp-sdk)[ Packagist](https://packagist.org/packages/php-llm/mcp-sdk)[ RSS](/packages/php-llm-mcp-sdk/feed)WikiDiscussions main Synced today

READMEChangelog (1)Dependencies (8)Versions (4)Used By (0)

Model Context Protocol PHP SDK \[WIP\]
======================================

[](#model-context-protocol-php-sdk-wip)

Important

**PHP LLM becomes Symfony AI** - this project moved to [github.com/symfony/ai](https://github.com/symfony/ai). Please use the new repository for all future development, issues, and contributions. Thanks for your contributions - we hope to see you at Symfony AI!

Model Context Protocol SDK for Client and Server applications in PHP. **Currently only support Tool Calls as Server via Server-Sent Events (SSE) and STDIO.**

See [Demo App](https://github.com/php-llm/mcp-demo) for a working example and [MCP Bundle](https://github.com/php-llm/mcp-bundle) for Symfony integration.

Installation
------------

[](#installation)

```
composer require php-llm/mcp-sdk
```

Usage with Symfony
------------------

[](#usage-with-symfony)

Server integration points for are tailored to Symfony Console and HttpFoundation (Laravel compatible).

### Console Command for STDIO Server

[](#console-command-for-stdio-server)

```
namespace App\Command;

use PhpLlm\McpSdk\Server;
use PhpLlm\McpSdk\Server\Transport\Stdio\SymfonyConsoleTransport;
use Symfony\Component\Console\Attribute\AsCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

#[AsCommand('mcp', 'Starts an MCP server')]
final class McpCommand extends Command
{
    public function __construct(
        private readonly Server $server,
    ) {
        parent::__construct();
    }

    protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $this->server->connect(
            new SymfonyConsoleTransport($input, $output)
        );

        return Command::SUCCESS;
    }
}
```

### Controller for Server-Sent Events Server

[](#controller-for-server-sent-events-server)

```
namespace App\Controller;

use PhpLlm\McpSdk\Server;
use PhpLlm\McpSdk\Server\Transport\Sse\Store\CachePoolStore;
use PhpLlm\McpSdk\Server\Transport\Sse\StreamTransport;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\StreamedResponse;
use Symfony\Component\HttpKernel\Attribute\AsController;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Uid\Uuid;

#[AsController]
#[Route('/mcp', name: 'mcp_')]
final readonly class McpController
{
    public function __construct(
        private Server $server,
        private CachePoolStore $store,
        private UrlGeneratorInterface $urlGenerator,
    ) {
    }

    #[Route('/sse', name: 'sse', methods: ['GET'])]
    public function sse(): StreamedResponse
    {
        $id = Uuid::v4();
        $endpoint = $this->urlGenerator->generate('mcp_messages', ['id' => $id], UrlGeneratorInterface::ABSOLUTE_URL);
        $transport = new StreamTransport($endpoint, $this->store, $id);

        return new StreamedResponse(fn() => $this->server->connect($transport), headers: [
            'Content-Type' => 'text/event-stream',
            'Cache-Control' => 'no-cache',
            'X-Accel-Buffering' => 'no',
        ]);
    }

    #[Route('/messages/{id}', name: 'messages', methods: ['POST'])]
    public function messages(Request $request, Uuid $id): Response
    {
        $this->store->push($id, $request->getContent());

        return new Response();
    }
}
```

### Exposing Tools

[](#exposing-tools)

Under the hood the SDK uses [LLM Chain](https://github.com/php-llm/llm-chain)'s `ToolBox` to register, analyze and execute tools. In combination with its [Symfony Bundle](https://github.com/php-llm/llm-chain-bundle) you can expose tools with `#[AsTool]` attribute.

```
use PhpLlm\LlmChain\ToolBox\Attribute\AsTool;

#[AsTool('company_name', 'Provides the name of your company')]
final class CompanyName
{
    public function __invoke(): string
    {
        return 'ACME Corp.'
    }
}
```

See [LLM Chain Documentation](https://github.com/php-llm/llm-chain?tab=readme-ov-file#tools) for more information.

###  Health Score

36

—

LowBetter than 82% of packages

Maintenance56

Moderate activity, may be stable

Popularity26

Limited adoption so far

Community15

Small or concentrated contributor base

Maturity41

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 51.9% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

329d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/e644c6c1e90b7d997edd1c25da41c48a76d89b7449fb5788214b341e2cd1a019?d=identicon)[chr-hertel](/maintainers/chr-hertel)

---

Top Contributors

[![chr-hertel](https://avatars.githubusercontent.com/u/2852185?v=4)](https://github.com/chr-hertel "chr-hertel (14 commits)")[![Nyholm](https://avatars.githubusercontent.com/u/1275206?v=4)](https://github.com/Nyholm "Nyholm (10 commits)")[![dazz](https://avatars.githubusercontent.com/u/182954?v=4)](https://github.com/dazz "dazz (2 commits)")[![luoyue712](https://avatars.githubusercontent.com/u/102944161?v=4)](https://github.com/luoyue712 "luoyue712 (1 commits)")

###  Code Quality

TestsPHPUnit

Static AnalysisPHPStan, Rector

Type Coverage Yes

### Embed Badge

![Health badge](/badges/php-llm-mcp-sdk/health.svg)

```
[![Health](https://phpackages.com/badges/php-llm-mcp-sdk/health.svg)](https://phpackages.com/packages/php-llm-mcp-sdk)
```

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