diff --git a/composer.json b/composer.json
index 86bd27e..1a2e1ee 100644
--- a/composer.json
+++ b/composer.json
@@ -29,15 +29,15 @@
         "composer/composer": "^2.7.0",
         "php-http/discovery": "^1.0",
         "php-http/httplug": "^2.0",
-        "php-http/message-factory": "^1.0",
-        "psr/http-client-implementation": "^1.0",
+        "psr/http-client-implementation": "*",
+        "psr/http-factory": "^1.0",
         "psr/http-message": "^1.0",
         "symfony/process": "^4.3.4 || ^5.0 || ^6.0"
     },
     "require-dev": {
         "nyholm/psr7": "^1.8",
+        "php-http/mock-client": "^1.6.0",
         "symfony/http-client": "^6.0 || ^7.0",
-        "php-http/message": "^1.0",
         "phpstan/phpstan": "^1.6",
         "phpunit/phpunit": "^10.5"
     },
diff --git a/src/Composer.php b/src/Composer.php
index 99370e6..5a82205 100644
--- a/src/Composer.php
+++ b/src/Composer.php
@@ -9,6 +9,7 @@
 use Winter\Packager\Package\DetailedPackage;
 use Winter\Packager\Package\DetailedVersionedPackage;
 use Winter\Packager\Package\Package;
+use Winter\Packager\Package\Packagist;
 use Winter\Packager\Package\VersionedPackage;
 
 /**
@@ -457,4 +458,17 @@ public static function newConstraint(mixed ...$arguments): Constraint
         $class = static::$packageClasses['constraint'];
         return new $class(...$arguments);
     }
+
+    /**
+     * Set the user agent for the Packagist API requests.
+     *
+     * To comply with Packagist's requirements for use of their API, we require that agent names contain a name or
+     * reference to the system being used, and a contact email address in the format of:
+     *
+     * `Name or Reference <email@address.com>`
+     */
+    public static function setAgent(string $agent): void
+    {
+        Packagist::setAgent($agent);
+    }
 }
diff --git a/src/Exceptions/PackagistException.php b/src/Exceptions/PackagistException.php
new file mode 100644
index 0000000..5bce76f
--- /dev/null
+++ b/src/Exceptions/PackagistException.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace Winter\Packager\Exceptions;
+
+/**
+ * Packagist exception.
+ *
+ * Handles an exception thrown when communicating with the Packagist API.
+ *
+ * @author Ben Thomson
+ * @since 0.3.0
+ */
+class PackagistException extends PackagerException
+{
+    protected $message = 'Unable to connect to or retrieve a valid response from Packagist.';
+}
diff --git a/src/Package/DetailedVersionedPackage.php b/src/Package/DetailedVersionedPackage.php
index d77f476..f8f09e8 100644
--- a/src/Package/DetailedVersionedPackage.php
+++ b/src/Package/DetailedVersionedPackage.php
@@ -9,7 +9,7 @@
  * @author Ben Thomson <git@alfreido.com>
  * @since 0.3.0
  */
-class DetailedVersionedPackage extends Package
+class DetailedVersionedPackage extends DetailedPackage
 {
     protected string $versionNormalized;
     protected string $latestVersionNormalized;
@@ -51,7 +51,25 @@ public function __construct(
         protected string $latestVersion = '',
         protected VersionStatus $updateStatus = VersionStatus::UP_TO_DATE,
     ) {
-        parent::__construct($namespace, $name, $description);
+        parent::__construct(
+            $namespace,
+            $name,
+            $description,
+            $type,
+            $keywords,
+            $homepage,
+            $authors,
+            $licenses,
+            $support,
+            $funding,
+            $requires,
+            $devRequires,
+            $extras,
+            $suggests,
+            $conflicts,
+            $replaces,
+            $readme,
+        );
 
         $this->versionNormalized = $this->normalizeVersion($version);
     }
diff --git a/src/Package/Package.php b/src/Package/Package.php
index e81fe30..50b06ab 100644
--- a/src/Package/Package.php
+++ b/src/Package/Package.php
@@ -2,6 +2,11 @@
 
 namespace Winter\Packager\Package;
 
+use Http\Discovery\Psr17FactoryDiscovery;
+use Http\Discovery\Psr18ClientDiscovery;
+use Winter\Packager\Composer;
+use Winter\Packager\Exceptions\PackagistException;
+
 /**
  * Base package class.
  *
@@ -63,10 +68,26 @@ public function getDescription(): string
 
     public function toDetailed(): DetailedPackage
     {
-        return new DetailedPackage(
-            $this->namespace,
-            $this->name,
-            $this->description
+        $details = Packagist::getPackage($this->namespace, $this->name);
+
+        return Composer::newDetailedPackage(
+            namespace: $this->namespace,
+            name: $this->name,
+            description: $this->description ?? '',
+            keywords: $details['keywords'] ?? [],
+            type: $details['type'] ?? 'library',
+            homepage: $details['homepage'] ?? '',
+            authors: $details['authors'] ?? [],
+            licenses: $details['licenses'] ?? [],
+            support: $details['support'] ?? [],
+            funding: $details['funding'] ?? [],
+            requires: $details['require'] ?? [],
+            devRequires: $details['require-dev'] ?? [],
+            extras: $details['extra'] ?? [],
+            suggests: $details['suggest'] ?? [],
+            conflicts: $details['conflict'] ?? [],
+            replaces: $details['replace'] ?? [],
+            readme: $details['readme'] ?? ''
         );
     }
 }
diff --git a/src/Package/Packagist.php b/src/Package/Packagist.php
new file mode 100644
index 0000000..ba51c45
--- /dev/null
+++ b/src/Package/Packagist.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace Winter\Packager\Package;
+
+use Composer\MetadataMinifier\MetadataMinifier;
+use Composer\Semver\VersionParser;
+use Http\Discovery\Psr17FactoryDiscovery;
+use Http\Discovery\Psr18ClientDiscovery;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestInterface;
+use Winter\Packager\Exceptions\PackagistException;
+
+/**
+ * Packagist class.
+ *
+ * Handles connecting to and making requests against the Packagist API. The Packagist API (generally) contains more
+ * information about a package than Composer offers directly, thus we use it to augment the information retrieved from
+ * Composer.
+ *
+ * @author Ben Thomson <git@alfreido.com>
+ * @since 0.3.0
+ */
+class Packagist
+{
+    protected const PACKAGIST_API_URL = 'https://packagist.org/';
+    protected const PACKAGIST_REPO_URL = 'https://repo.packagist.org/p2/';
+
+    protected static string $agent = 'Winter Packager <no-reply@example.com>';
+
+    /**
+     * Get information on a package in the Packagist API.
+     *
+     * @return array<string, mixed>
+     */
+    public static function getPackage(string $namespace, string $name, ?string $version = null): array
+    {
+        $client = static::getClient();
+        $request = static::newRepoRequest($namespace . '/' . $name . '.json');
+
+        $response = $client->sendRequest($request);
+
+        if ($response->getStatusCode() === 404) {
+            throw new PackagistException('Package not found');
+        }
+
+        if ($response->getStatusCode() !== 200) {
+            throw new PackagistException('Failed to retrieve package information');
+        }
+
+        $body = json_decode($response->getBody()->getContents(), true);
+
+        if (is_null($version)) {
+            if (!isset($body['packages'][$namespace . '/' . $name][0])) {
+                throw new PackagistException('Package information not found');
+            }
+        } else {
+            if (!isset($body['packages'][$namespace . '/' . $name])) {
+                throw new PackagistException('Package information not found');
+            }
+
+            $versions = MetadataMinifier::expand($body['packages'][$namespace . '/' . $name]);
+            $parser = new VersionParser;
+            $packageVersionNormalized = $parser->normalize($version);
+
+            foreach ($versions as $packageVersion) {
+                if ($packageVersion['version_normalized'] === $packageVersionNormalized) {
+                    return $packageVersion;
+                }
+            }
+
+            throw new PackagistException('Package version not found');
+        }
+
+        return $body['packages'][$namespace . '/' . $name][0];
+    }
+
+    public static function getClient(): ClientInterface
+    {
+        return Psr18ClientDiscovery::find();
+    }
+
+    /**
+     * Set the user agent for the Packagist API requests.
+     *
+     * To comply with Packagist's requirements for use of their API, we require that agent names contain a name or
+     * reference to the system being used, and a contact email address in the format of:
+     *
+     * `Name or Reference <email@address.com>`
+     */
+    public static function setAgent(string $agent): void
+    {
+        if (!preg_match('/^(.+) <(.+)>$/', $agent, $matches)) {
+            throw new \InvalidArgumentException(
+                'Agent must be in the format of `Name or Reference <email@address.com>`'
+            );
+        }
+
+        [$name, $email] = $matches;
+
+        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+            throw new \InvalidArgumentException('Agent email address is not valid');
+        }
+
+        static::$agent = trim($name) . ' <' . trim($email) . '>';
+    }
+
+    public static function newApiRequest(string $url = ''): RequestInterface
+    {
+        $request = Psr17FactoryDiscovery::findRequestFactory()->createRequest('GET', self::PACKAGIST_API_URL . ltrim($url, '/'));
+        $request->withHeader('Accept', 'application/json');
+        $request->withHeader('Content-Type', 'application/json');
+        $request->withHeader('User-Agent', static::$agent);
+
+        return $request;
+    }
+
+    public static function newRepoRequest(string $url = ''): RequestInterface
+    {
+        $request = Psr17FactoryDiscovery::findRequestFactory()->createRequest('GET', self::PACKAGIST_REPO_URL . ltrim($url, '/'));
+        $request->withHeader('Accept', 'application/json');
+        $request->withHeader('Content-Type', 'application/json');
+        $request->withHeader('User-Agent', static::$agent);
+
+        return $request;
+    }
+}
diff --git a/src/Package/VersionedPackage.php b/src/Package/VersionedPackage.php
index e666093..045963b 100644
--- a/src/Package/VersionedPackage.php
+++ b/src/Package/VersionedPackage.php
@@ -3,6 +3,7 @@
 namespace Winter\Packager\Package;
 
 use Composer\Semver\VersionParser;
+use Winter\Packager\Composer;
 use Winter\Packager\Enums\VersionStatus;
 
 /**
@@ -24,7 +25,7 @@ public function __construct(
     ) {
         parent::__construct($namespace, $name, $description);
 
-        $this->versionNormalized = $this->normalizeVersion($version);
+        $this->versionNormalized = $this->normalizeVersion($this->version);
     }
 
     public function setVersion(string $version): void
@@ -74,4 +75,30 @@ protected function normalizeVersion(string $version): string
         $parser = new VersionParser;
         return $parser->normalize($version);
     }
+
+    public function toDetailed(): DetailedVersionedPackage
+    {
+        $details = Packagist::getPackage($this->namespace, $this->name, $this->version);
+
+        return Composer::newDetailedVersionedPackage(
+            namespace: $this->namespace,
+            name: $this->name,
+            description: $this->description ?? '',
+            keywords: $details['keywords'] ?? [],
+            type: $details['type'] ?? 'library',
+            homepage: $details['homepage'] ?? '',
+            authors: $details['authors'] ?? [],
+            licenses: $details['licenses'] ?? [],
+            support: $details['support'] ?? [],
+            funding: $details['funding'] ?? [],
+            requires: $details['require'] ?? [],
+            devRequires: $details['require-dev'] ?? [],
+            extras: $details['extra'] ?? [],
+            suggests: $details['suggest'] ?? [],
+            conflicts: $details['conflict'] ?? [],
+            replaces: $details['replace'] ?? [],
+            readme: $details['readme'] ?? '',
+            version: $details['version'],
+        );
+    }
 }
diff --git a/tests/Cases/Package/PackageTest.php b/tests/Cases/Package/PackageTest.php
new file mode 100644
index 0000000..0967f2b
--- /dev/null
+++ b/tests/Cases/Package/PackageTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Winter\Packager\Tests\Cases\Package;
+
+use Winter\Packager\Composer;
+use Winter\Packager\Tests\ComposerTestCase;
+
+/**
+ * @testdox The Package class
+ * @coversDefaultClass \Winter\Packager\Package\Package
+ */
+class PackageTest extends ComposerTestCase
+{
+    /**
+     * @test
+     * @testdox it can convert a package to a detailed package
+     * @covers \Winter\Packager\Package\Package::toDetailed
+     */
+    public function itCanConvertAPackageToADetailedPackage()
+    {
+        $package = Composer::newPackage('winter', 'wn-pages-plugin');
+        $package = $package->toDetailed();
+
+        $this->assertInstanceOf(\Winter\Packager\Package\DetailedPackage::class, $package);
+        $this->assertEquals('winter', $package->getNamespace());
+        $this->assertEquals('wn-pages-plugin', $package->getName());
+        $this->assertEquals('winter-plugin', $package->getType());
+        $this->assertEquals('https://github.com/wintercms/wn-pages-plugin', $package->getHomepage());
+        $this->assertArrayHasKey('installer-name', $package->getExtras());
+        $this->assertArrayHasKey('winter', $package->getExtras());
+        $this->assertEquals('pages', $package->getExtras()['installer-name']);
+    }
+
+    /**
+     * @test
+     * @testdox it can convert a versioned package to a detailed versioned package
+     * @covers \Winter\Packager\Package\VersionedPackage::toDetailed
+     */
+    public function itCanConvertAVersionedPackageToADetailedPackage()
+    {
+        $package = Composer::newVersionedPackage('winter', 'wn-pages-plugin', '', 'v2.0.3');
+        $package = $package->toDetailed();
+
+        $this->assertInstanceOf(\Winter\Packager\Package\DetailedVersionedPackage::class, $package);
+        $this->assertEquals('winter', $package->getNamespace());
+        $this->assertEquals('wn-pages-plugin', $package->getName());
+        $this->assertEquals('winter-plugin', $package->getType());
+        $this->assertEquals('https://github.com/wintercms/wn-pages-plugin', $package->getHomepage());
+        $this->assertArrayHasKey('installer-name', $package->getExtras());
+        $this->assertArrayNotHasKey('winter', $package->getExtras());
+        $this->assertEquals('pages', $package->getExtras()['installer-name']);
+        $this->assertEquals('2.0.3.0', $package->getVersionNormalized());
+    }
+}