diff --git a/src/Amplitude/AmplitudeConfig.php b/src/Amplitude/AmplitudeConfig.php
index 3587eae..1beea8e 100644
--- a/src/Amplitude/AmplitudeConfig.php
+++ b/src/Amplitude/AmplitudeConfig.php
@@ -2,13 +2,13 @@
 
 namespace AmplitudeExperiment\Amplitude;
 
+use AmplitudeExperiment\Assignment\AssignmentConfig;
+use AmplitudeExperiment\Assignment\AssignmentConfigBuilder;
 use AmplitudeExperiment\Http\FetchClientInterface;
 
 /**
- * Configuration options for Amplitude. This is an object that can be created using
- * a {@link AmplitudeConfigBuilder}. Example usage:
- *
- * AmplitudeConfigBuilder::builder()->serverZone("EU")->build();
+ * Configuration options for Amplitude. The Amplitude object is created when you create an {@link AssignmentConfig}.
+ * Options should be set using {@link AssignmentConfigBuilder}.
  */
 class AmplitudeConfig
 {
@@ -33,9 +33,13 @@ class AmplitudeConfig
      * True to use batch API endpoint, False to use HTTP V2 API endpoint.
      */
     public bool $useBatch;
+    /**
+     * The underlying HTTP client to use for requests, if this is not set, the default {@link GuzzleFetchClient} will be used.
+     */
     public ?FetchClientInterface $fetchClient;
     /**
      * @var array<string, mixed>
+     * The configuration for the underlying default {@link GuzzleFetchClient} client (if used). See {@link GUZZLE_DEFAULTS} for defaults.
      */
     public array $guzzleClientConfig;
 
diff --git a/src/Assignment/AssignmentConfig.php b/src/Assignment/AssignmentConfig.php
index b02ff60..fc8931e 100644
--- a/src/Assignment/AssignmentConfig.php
+++ b/src/Assignment/AssignmentConfig.php
@@ -6,15 +6,27 @@
 
 /**
  * Configuration options for assignment tracking. This is an object that can be created using
- * a {@link AssignmentConfigBuilder}. Example usage:
+ * a {@link AssignmentConfigBuilder}, which also sets options for {@link AmplitudeConfig}. Example usage:
  *
- * AssignmentConfigBuilder::builder('api-key')->build()
+ * ```
+ * AssignmentConfigBuilder::builder('api-key')->minIdLength(10)->build();
+ * ```
  */
 
 class AssignmentConfig
 {
+    /**
+     * The Amplitude Analytics API key.
+     */
     public string $apiKey;
+    /**
+     * The maximum number of assignments stored in the assignment cache
+     */
     public int $cacheCapacity;
+    /**
+     * Configuration options for the underlying {@link Amplitude} client. This is created when
+     * calling {@link AssignmentConfigBuilder::build()} and does not need to be explicitly set.
+     */
     public AmplitudeConfig $amplitudeConfig;
 
     const DEFAULTS = [
diff --git a/src/Local/LocalEvaluationConfig.php b/src/Local/LocalEvaluationConfig.php
index 6bc1ae5..23f4660 100644
--- a/src/Local/LocalEvaluationConfig.php
+++ b/src/Local/LocalEvaluationConfig.php
@@ -7,6 +7,14 @@
 use AmplitudeExperiment\Logger\LogLevel;
 use Psr\Log\LoggerInterface;
 
+/**
+ * Configuration options. This is an object that can be created using
+ * a {@link LocalEvaluationConfigBuilder}. Example usage:
+ *
+ *```
+ * LocalEvaluationConfig::builder()->serverUrl("https://api.lab.amplitude.com/")->build();
+ * ```
+ */
 class LocalEvaluationConfig
 {
     /**
@@ -14,7 +22,7 @@ class LocalEvaluationConfig
      */
     public ?LoggerInterface $logger;
     /**
-     * The log level to use for the logger.
+     * The {@link LogLevel} to use for the logger.
      */
     public int $logLevel;
     /**
@@ -29,12 +37,12 @@ class LocalEvaluationConfig
     public array $bootstrap;
     public ?AssignmentConfig $assignmentConfig;
     /**
-     * The underlying HTTP client to use for requests, if this is not set, the default GuzzleFetchClient will be used.
+     * The underlying HTTP client to use for requests, if this is not set, the default {@link GuzzleFetchClient} will be used.
      */
     public ?FetchClientInterface $fetchClient;
     /**
      * @var array<string, mixed>
-     * The configuration for the underlying default Guzzle client. See {@link GUZZLE_DEFAULTS} for defaults.
+     * The configuration for the underlying default {@link GuzzleFetchClient} client (if used). See {@link GUZZLE_DEFAULTS} for defaults.
      */
     public array $guzzleClientConfig;
 
diff --git a/src/Remote/RemoteEvaluationConfig.php b/src/Remote/RemoteEvaluationConfig.php
index a3806b5..2a7971c 100644
--- a/src/Remote/RemoteEvaluationConfig.php
+++ b/src/Remote/RemoteEvaluationConfig.php
@@ -11,7 +11,9 @@
  * Configuration options. This is an object that can be created using
  * a {@link RemoteEvaluationConfigBuilder}. Example usage:
  *
- *`RemoteEvaluationConfig::builder()->serverUrl("https://api.lab.amplitude.com/")->build()`
+ *```
+ * RemoteEvaluationConfig::builder()->serverUrl("https://api.lab.amplitude.com/")->build();
+ * ```
  */
 class RemoteEvaluationConfig
 {
@@ -20,7 +22,7 @@ class RemoteEvaluationConfig
      */
     public ?LoggerInterface $logger;
     /**
-     * The log level to use for the logger.
+     * The {@link LogLevel} to use for the logger.
      */
     public int $logLevel;
     /**
@@ -28,12 +30,12 @@ class RemoteEvaluationConfig
      */
     public string $serverUrl;
     /**
-     * The underlying HTTP client to use for requests, if this is not set, the default GuzzleFetchClient will be used.
+     * The underlying HTTP client to use for requests, if this is not set, the default {@link GuzzleFetchClient} will be used.
      */
     public ?FetchClientInterface $fetchClient;
     /**
      * @var array<string, mixed>
-     * The configuration for the underlying default Guzzle client. See {@link GUZZLE_DEFAULTS} for defaults.
+     * The configuration for the underlying default {@link GuzzleFetchClient} (if used). See {@link GUZZLE_DEFAULTS} for defaults.
      */
     public array $guzzleClientConfig;