https://github.com/php-llm/mcp-demo
Demo application for the Model Context Protocol SDK
https://github.com/php-llm/mcp-demo
Last synced: 12 months ago
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Demo application for the Model Context Protocol SDK
- Host: GitHub
- URL: https://github.com/php-llm/mcp-demo
- Owner: php-llm
- License: mit
- Created: 2025-03-07T20:00:13.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2025-03-07T20:26:56.000Z (about 1 year ago)
- Last Synced: 2025-03-07T21:25:02.322Z (about 1 year ago)
- Language: PHP
- Size: 90.8 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# PHP MCP Demo
Simple demo gluing together [MCP](https://modelcontextprotocol.io/) with Symfony and [LLM Chain](https://github.com/php-llm/llm-chain) - heavily inspired by @lyrixx [MCP blog post](https://jolicode.com/blog/mcp-the-open-protocol-that-turns-llm-chatbots-into-intelligent-agents).
## Requirements
* PHP 8.4
* Composer
* Symfony CLI
* NPX
## Installation
Setting up the Symfony project:
```bash
git clone git@github.com:php-llm/mcp-demo.git
cd mcp-demo
composer install
symfony serve -d --no-tls
```
Running the MCP Inspector:
```bash
npx -y @modelcontextprotocol/inspector
```
## Usage
Open the MCP Inspector in your browser, for example at `http://localhost:5173/`.
For STDIO use:
* Transport Type: `STDIO`
* Command: `/path/to/mcp-demo/bin/console`
* Arguments: `mcp`
For SSE use:
* Transport Type: `SSE`
* URL: `http://localhost:8000/mcp/sse` (port might differ)
Click `Connect` and you should be able to use the tools of the Symfony app via the MCP Inspector.
## SDK
Server integration points for are tailored to Symfony Console and HttpFoundation (Laravel compatible).
### Example Console Command for STDIO
```php
#[AsCommand('mcp', 'Starts an MCP server')]
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;
}
}
```
See [McpCommand.php](src/Command/McpCommand.php) for the full example.
### Example Controller for Server-Sent Events
```php
#[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();
}
}
```
See [McpController.php](src/Controller/McpController.php) for the full example.