diff --git a/composer.json b/composer.json
index 9651b02..98892f9 100644
--- a/composer.json
+++ b/composer.json
@@ -54,7 +54,7 @@
         "test:lint": "@php vendor/bin/pint --config https://raw.githubusercontent.com/DIJ-digital/pint-config/main/pint.json",
         "test:unit": "pest",
         "test:types": "phpstan",
-        "test:refactor": "rector --dry-run",
+        "test:refactor": "rector",
         "test": [
             "@test:lint",
             "@test:type-coverage",
diff --git a/peck.json b/peck.json
index 4b0e01d..902e556 100644
--- a/peck.json
+++ b/peck.json
@@ -1,6 +1,14 @@
 {
     "preset": "base",
     "ignore": {
-        "words": ["php", "langfuse", "param", "compilable", "eval"]
+        "words": [
+            "php",
+            "langfuse",
+            "param",
+            "compilable",
+            "eval",
+            "sha",
+            "tokenizer"
+        ]
     }
 }
diff --git a/src/Contracts/TransporterInterface.php b/src/Contracts/TransporterInterface.php
index 8234ade..558497a 100644
--- a/src/Contracts/TransporterInterface.php
+++ b/src/Contracts/TransporterInterface.php
@@ -9,34 +9,34 @@
 interface TransporterInterface
 {
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      */
     public function request(string $method, string $uri, array $options = []): ResponseInterface;
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      */
     public function get(string $uri, array $options = []): ResponseInterface;
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      */
     public function post(string $uri, array $options = []): ResponseInterface;
 
     /**
-     * @param array<string, mixed> $data
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $data
+     * @param  array<string, mixed>  $options
      */
     public function postJson(string $uri, array $data = [], array $options = []): ResponseInterface;
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      */
     public function delete(string $uri, array $options = []): ResponseInterface;
 
     /**
-     * @param array<string, mixed> $data
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $data
+     * @param  array<string, mixed>  $options
      */
     public function patchJson(string $uri, array $data = [], array $options = []): ResponseInterface;
 }
diff --git a/src/Langfuse.php b/src/Langfuse.php
index ebe96f9..1e8b65e 100644
--- a/src/Langfuse.php
+++ b/src/Langfuse.php
@@ -12,8 +12,7 @@ public function __construct(
         private readonly TransporterInterface $transporter,
         private readonly string $environment = 'default',
         private readonly string $label = 'latest',
-    ) {
-    }
+    ) {}
 
     public function prompt(): Prompt
     {
@@ -37,4 +36,11 @@ public function score(): Score
             transporter: $this->transporter,
         );
     }
+
+    public function session(): Session
+    {
+        return new Session(
+            transporter: $this->transporter,
+        );
+    }
 }
diff --git a/src/Responses/SessionListResponse.php b/src/Responses/SessionListResponse.php
new file mode 100644
index 0000000..43ffe24
--- /dev/null
+++ b/src/Responses/SessionListResponse.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DIJ\Langfuse\PHP\Responses;
+
+use DIJ\Langfuse\PHP\ValueObjects\MetaData;
+
+readonly class SessionListResponse
+{
+    /**
+     * @param  array<int, SessionResponse>  $data
+     */
+    public function __construct(
+        public array $data,
+        public MetaData $meta,
+    ) {}
+
+    /**
+     * @param array{
+     *     data: array<int, array{
+     *         id: string,
+     *         createdAt: string,
+     *         projectId: string,
+     *         environment?: string|null,
+     *         bookmarked?: bool|null,
+     *         public?: bool|null
+     *     }>,
+     *     meta: array{page: int, limit: int, totalPages: int, totalItems: int}
+     * } $data
+     */
+    public static function fromArray(array $data): self
+    {
+        return new self(
+            data: array_map(fn (array $item): SessionResponse => SessionResponse::fromArray($item), $data['data']),
+            meta: MetaData::fromArray($data['meta']),
+        );
+    }
+}
diff --git a/src/Responses/SessionResponse.php b/src/Responses/SessionResponse.php
new file mode 100644
index 0000000..9c27618
--- /dev/null
+++ b/src/Responses/SessionResponse.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DIJ\Langfuse\PHP\Responses;
+
+readonly class SessionResponse
+{
+    /**
+     * @param  array<int, mixed>  $traces
+     */
+    public function __construct(
+        public string $id,
+        public string $createdAt,
+        public string $projectId,
+        public ?string $environment = null,
+        public ?bool $bookmarked = null,
+        public ?bool $public = null,
+        public array $traces = [],
+    ) {}
+
+    /**
+     * @param array{
+     *     id: string,
+     *     createdAt: string,
+     *     projectId: string,
+     *     environment?: string|null,
+     *     bookmarked?: bool|null,
+     *     public?: bool|null,
+     *     traces?: array<int, mixed>
+     * } $data
+     */
+    public static function fromArray(array $data): self
+    {
+        return new self(
+            id: $data['id'],
+            createdAt: $data['createdAt'],
+            projectId: $data['projectId'],
+            environment: $data['environment'] ?? null,
+            bookmarked: $data['bookmarked'] ?? null,
+            public: $data['public'] ?? null,
+            traces: $data['traces'] ?? [],
+        );
+    }
+}
diff --git a/src/Session.php b/src/Session.php
new file mode 100644
index 0000000..5663e10
--- /dev/null
+++ b/src/Session.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DIJ\Langfuse\PHP;
+
+use DIJ\Langfuse\PHP\Contracts\TransporterInterface;
+use DIJ\Langfuse\PHP\Responses\SessionListResponse;
+use DIJ\Langfuse\PHP\Responses\SessionResponse;
+use JsonException;
+
+class Session
+{
+    public function __construct(private readonly TransporterInterface $transporter) {}
+
+    /**
+     * @throws JsonException
+     */
+    public function get(string $sessionId): SessionResponse
+    {
+        $response = $this->transporter->get(
+            uri: sprintf('/api/public/sessions/%s', urlencode($sessionId)),
+        );
+
+        /** @var array{
+         *     id: string,
+         *     createdAt: string,
+         *     projectId: string,
+         *     environment: string|null,
+         *     bookmarked: bool|null,
+         *     public: bool|null,
+         *     traces: array<int, mixed>
+         * } $data
+         */
+        $data = json_decode($response->getBody()->getContents(), true, flags: JSON_THROW_ON_ERROR);
+
+        return SessionResponse::fromArray($data);
+    }
+
+    /**
+     * @throws JsonException
+     */
+    public function list(
+        ?int $page = null,
+        ?int $limit = null,
+        ?string $fromTimestamp = null,
+        ?string $toTimestamp = null,
+        ?array $environment = null,
+    ): SessionListResponse {
+        $response = $this->transporter->get(
+            uri: '/api/public/sessions',
+            options: ['query' => array_filter([
+                'page' => $page,
+                'limit' => $limit,
+                'fromTimestamp' => $fromTimestamp,
+                'toTimestamp' => $toTimestamp,
+                'environment' => $environment,
+            ])]
+        );
+
+        /** @var array{
+         *     data: array<int, array{
+         *         id: string,
+         *         createdAt: string,
+         *         projectId: string,
+         *         environment: string|null,
+         *         bookmarked: bool|null,
+         *         public: bool|null
+         *     }>,
+         *     meta: array{page: int, limit: int, totalPages: int, totalItems: int}
+         * } $data
+         */
+        $data = json_decode($response->getBody()->getContents(), true, flags: JSON_THROW_ON_ERROR);
+
+        return SessionListResponse::fromArray($data);
+    }
+}
diff --git a/src/Testing/Responses/GetSessionListResponse.php b/src/Testing/Responses/GetSessionListResponse.php
new file mode 100644
index 0000000..34b4d85
--- /dev/null
+++ b/src/Testing/Responses/GetSessionListResponse.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DIJ\Langfuse\PHP\Testing\Responses;
+
+use GuzzleHttp\Psr7\Response;
+
+class GetSessionListResponse extends Response
+{
+    /**
+     * @param  array<array<string>|string>  $headers
+     */
+    public function __construct(int $status = 200, array $headers = [], string $version = '1.1', ?string $reason = null)
+    {
+        parent::__construct($status, $headers, (string) json_encode($this->payload()), $version, $reason);
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function payload(): array
+    {
+        return [
+            'data' => [
+                [
+                    'id' => 'session-abc123',
+                    'createdAt' => '2025-01-22T10:00:00.000Z',
+                    'projectId' => 'proj-abc123',
+                    'environment' => 'production',
+                    'bookmarked' => false,
+                    'public' => false,
+                ],
+                [
+                    'id' => 'session-def456',
+                    'createdAt' => '2025-01-22T09:00:00.000Z',
+                    'projectId' => 'proj-abc123',
+                    'environment' => 'development',
+                    'bookmarked' => true,
+                    'public' => true,
+                ],
+            ],
+            'meta' => [
+                'page' => 1,
+                'limit' => 10,
+                'totalPages' => 1,
+                'totalItems' => 2,
+            ],
+        ];
+    }
+}
diff --git a/src/Testing/Responses/GetSessionResponse.php b/src/Testing/Responses/GetSessionResponse.php
new file mode 100644
index 0000000..db4f2a9
--- /dev/null
+++ b/src/Testing/Responses/GetSessionResponse.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DIJ\Langfuse\PHP\Testing\Responses;
+
+use GuzzleHttp\Psr7\Response;
+
+class GetSessionResponse extends Response
+{
+    /**
+     * @param  array<array<string>|string>  $headers
+     * @param  array<string, mixed>  $data
+     */
+    public function __construct(int $status = 200, array $headers = [], string $version = '1.1', ?string $reason = null, array $data = [])
+    {
+        parent::__construct($status, $headers, (string) json_encode($this->payload($data)), $version, $reason);
+    }
+
+    /**
+     * @param  array<string, mixed>  $data
+     * @return array<string, mixed>
+     */
+    public function payload(array $data = []): array
+    {
+        return array_merge([
+            'id' => 'session-abc123',
+            'createdAt' => '2025-01-22T10:00:00.000Z',
+            'projectId' => 'proj-abc123',
+            'environment' => 'production',
+            'bookmarked' => false,
+            'public' => false,
+            'traces' => [
+                [
+                    'id' => 'trace-001',
+                    'name' => 'trace-in-session',
+                    'timestamp' => '2025-01-22T10:30:00.000Z',
+                ],
+                [
+                    'id' => 'trace-002',
+                    'name' => 'another-trace',
+                    'timestamp' => '2025-01-22T10:35:00.000Z',
+                ],
+            ],
+        ], $data);
+    }
+}
diff --git a/src/Transporters/HttpTransporter.php b/src/Transporters/HttpTransporter.php
index 319cf49..a2b734b 100644
--- a/src/Transporters/HttpTransporter.php
+++ b/src/Transporters/HttpTransporter.php
@@ -21,8 +21,7 @@ class HttpTransporter implements TransporterInterface
 {
     public function __construct(
         public readonly ClientInterface $client
-    ) {
-    }
+    ) {}
 
     /**
      * @throws BadRequestException
@@ -45,7 +44,7 @@ public function request(string $method, string $uri, array $options = []): Respo
     }
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      *
      * @throws BadRequestException
      * @throws ForbiddenException
@@ -61,7 +60,7 @@ public function get(string $uri, array $options = []): ResponseInterface
     }
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      *
      * @throws BadRequestException
      * @throws ForbiddenException
@@ -82,7 +81,7 @@ public function postJson(string $uri, array $data = [], array $options = []): Re
     }
 
     /**
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $options
      *
      * @throws BadRequestException
      * @throws ForbiddenException
@@ -98,8 +97,8 @@ public function delete(string $uri, array $options = []): ResponseInterface
     }
 
     /**
-     * @param array<string, mixed> $data
-     * @param array<string, mixed> $options
+     * @param  array<string, mixed>  $data
+     * @param  array<string, mixed>  $options
      *
      * @throws BadRequestException
      * @throws ForbiddenException
diff --git a/tests/Feature/SessionTest.php b/tests/Feature/SessionTest.php
new file mode 100644
index 0000000..7b496ad
--- /dev/null
+++ b/tests/Feature/SessionTest.php
@@ -0,0 +1,102 @@
+<?php
+
+declare(strict_types=1);
+
+use DIJ\Langfuse\PHP\Langfuse;
+use DIJ\Langfuse\PHP\Responses\SessionListResponse;
+use DIJ\Langfuse\PHP\Responses\SessionResponse;
+use DIJ\Langfuse\PHP\Testing\Responses\GetSessionListResponse;
+use DIJ\Langfuse\PHP\Testing\Responses\GetSessionResponse;
+use DIJ\Langfuse\PHP\Transporters\HttpTransporter;
+use DIJ\Langfuse\PHP\ValueObjects\MetaData;
+use GuzzleHttp\Client;
+use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\HandlerStack;
+
+it('can get a session by id', function (): void {
+    $mock = new MockHandler([
+        new GetSessionResponse(),
+    ]);
+
+    $handlerStack = HandlerStack::create($mock);
+    $client = new Client(['handler' => $handlerStack]);
+
+    $session = (new Langfuse(new HttpTransporter($client)))
+        ->session()
+        ->get('session-abc123');
+
+    expect($session)->toBeInstanceOf(SessionResponse::class)
+        ->and($session->id)->toBe('session-abc123')
+        ->and($session->projectId)->toBe('proj-abc123')
+        ->and($session->environment)->toBe('production')
+        ->and($session->bookmarked)->toBe(false)
+        ->and($session->public)->toBe(false)
+        ->and($session->traces)->toBeArray()
+        ->and($session->traces)->toHaveCount(2);
+});
+
+it('can list sessions', function (): void {
+    $mock = new MockHandler([
+        new GetSessionListResponse,
+    ]);
+
+    $handlerStack = HandlerStack::create($mock);
+    $client = new Client(['handler' => $handlerStack]);
+
+    $sessions = (new Langfuse(new HttpTransporter($client)))
+        ->session()
+        ->list();
+
+    expect($sessions)->toBeInstanceOf(SessionListResponse::class)
+        ->and($sessions->data)->toBeArray()
+        ->and($sessions->data)->toHaveCount(2)
+        ->and($sessions->data[0])->toBeInstanceOf(SessionResponse::class)
+        ->and($sessions->data[0]->id)->toBe('session-abc123')
+        ->and($sessions->data[1]->id)->toBe('session-def456')
+        ->and($sessions->meta)->toBeInstanceOf(MetaData::class)
+        ->and($sessions->meta->page)->toBe(1)
+        ->and($sessions->meta->totalItems)->toBe(2);
+});
+
+it('can list sessions with filters', function (): void {
+    $mock = new MockHandler([
+        new GetSessionListResponse,
+    ]);
+
+    $handlerStack = HandlerStack::create($mock);
+    $client = new Client(['handler' => $handlerStack]);
+
+    $sessions = (new Langfuse(new HttpTransporter($client)))
+        ->session()
+        ->list(
+            page: 1,
+            limit: 10,
+            fromTimestamp: '2025-01-01T00:00:00.000Z',
+            toTimestamp: '2025-01-31T23:59:59.999Z',
+            environment: ['production'],
+        );
+
+    expect($sessions)->toBeInstanceOf(SessionListResponse::class)
+        ->and($sessions->data)->toBeArray();
+});
+
+it('can get session with traces', function (): void {
+    $mock = new MockHandler([
+        new GetSessionResponse(),
+    ]);
+
+    $handlerStack = HandlerStack::create($mock);
+    $client = new Client(['handler' => $handlerStack]);
+
+    $session = (new Langfuse(new HttpTransporter($client)))
+        ->session()
+        ->get('session-abc123');
+
+    expect($session->traces)->toBeArray()
+        ->and($session->traces)->not->toBeEmpty();
+
+    /** @var array{id: string, name: string} $trace */
+    $trace = $session->traces[0];
+    expect($trace['id'])->toBe('trace-001')
+        ->and($trace['name'])->toBe('trace-in-session');
+});