diff --git a/index.php b/index.php
index d32efb1..51d3a5d 100644
--- a/index.php
+++ b/index.php
@@ -5,37 +5,45 @@ require_once __DIR__ . "/vendor/autoload.php";
 use Lewisdale\Webmentions\Endpoint;
 use Lewisdale\Webmentions\Exceptions\InvalidTargetException;
 use Lewisdale\Webmentions\Exceptions\InvalidUrlException;
+use Lewisdale\Webmentions\Gateways\SqliteGateway;
 use Lewisdale\Webmentions\Router\Request;
-use Lewisdale\Webmentions\Router\Router;
 use Lewisdale\Webmentions\Router\Response;
+use Lewisdale\Webmentions\Router\Router;
 use Lewisdale\Webmentions\Router\StatusCode;
 use Lewisdale\Webmentions\Webmention;
+use Symfony\Component\HttpClient\HttpClient;
 
 $router = new Router();
 
-$router->post("/send", function(Request $req, Response $response) {
+$router->post("/send", function (Request $req, Response $response) {
     $mentioner = new Webmention();
     $source = $req->query["source"];
-	$mentioner->sendForPage($source);
+    $mentioner->sendForPage($source);
 });
 
-$router->post("/endpoint", function(Request $req, Response $response) {
-	$source = $req->post['source'];
-	$target = $req->post['target'];
+$router->post("/endpoint", function (Request $req, Response $response) {
+    $source = $req->post['source'];
+    $target = $req->post['target'];
 
-	$endpoint = new Endpoint();
-	
-	try {
-		$endpoint->receiveWebmention($source, $target);
-	} catch (InvalidUrlException $e) {
-		$response->status_code = StatusCode::BadRequest;
-		return "Source and target must be valid URLs";
-	} catch (InvalidTargetException $e) {
-		$response->status_code = StatusCode::BadRequest;
-		return "Target must be on the domain lewisdale.dev";
-	}
+    $endpoint = new Endpoint(HttpClient::create(), new SqliteGateway("webmentions.db"));
 
-	$response->status_code = StatusCode::Created;
+    try {
+        $endpoint->receiveWebmention($source, $target);
+    } catch (InvalidUrlException $e) {
+        $response->status_code = StatusCode::BadRequest;
+        return "Source and target must be valid URLs";
+    } catch (InvalidTargetException $e) {
+        $response->status_code = StatusCode::BadRequest;
+        return "Target must be on the domain lewisdale.dev";
+    } catch (\Lewisdale\Webmentions\Exceptions\SourceNotFoundException $e) {
+        $response->status_code = StatusCode::BadRequest;
+        return "Source URL was unreachable";
+    } catch (\Lewisdale\Webmentions\Exceptions\TargetNotMentionedException) {
+        $response->status_code = StatusCode::BadRequest;
+        return "Source does not mention the target";
+    }
+
+    $response->status_code = StatusCode::Created;
 });
 
 $router->get('/', fn($req, $res) => "<h1>Webmention server</h1>");