diff --git a/transforms/filter.ts b/transforms/filter.ts
index afe4de1..a193c44 100644
--- a/transforms/filter.ts
+++ b/transforms/filter.ts
@@ -1,7 +1,67 @@
+/**
+ * # FilterLogLevelStream
+ *
+ * A transform stream that filters logs based on their log level.
+ *
+ * @example
+ * ```ts
+ * import { ConsoleReadableStream } from "@denosaurs/log";
+ * import { FilterLogLevelStream } from "@denosaurs/log/transforms/filter";
+ * import { ConsoleWritableStream } from "@denosaurs/log/writables/console";
+ *
+ * // Capture logs from the console
+ * const stream = new ConsoleReadableStream();
+ * stream
+ *   // Filter out logs with a level of "info" or higher
+ *   .pipeThrough(new FilterLogLevelStream("info"))
+ *   // Write the logs to the console
+ *   .pipeTo(new ConsoleWritableStream());
+ *
+ * // Log some messages
+ * console.log("Hello, world!");
+ * console.group("Group 1");
+ * console.debug("Debug message");
+ * console.groupEnd();
+ * console.info("Info message");
+ *
+ * // Output:
+ * // Hello, world!
+ * // Info message
+ * ```
+ *
+ * @module
+ */
+
 import { Log, LOG_LEVELS, LogLevel } from "../mod.ts";
 
 /**
  * A transform stream that filters logs based on their log level.
+ *
+ * @example
+ * ```ts
+ * import { ConsoleReadableStream } from "@denosaurs/log";
+ * import { FilterLogLevelStream } from "@denosaurs/log/transforms/filter";
+ * import { ConsoleWritableStream } from "@denosaurs/log/writables/console";
+ *
+ * // Capture logs from the console
+ * const stream = new ConsoleReadableStream();
+ * stream
+ *   // Filter out logs with a level of "info" or higher
+ *   .pipeThrough(new FilterLogLevelStream("info"))
+ *   // Write the logs to the console
+ *   .pipeTo(new ConsoleWritableStream());
+ *
+ * // Log some messages
+ * console.log("Hello, world!");
+ * console.group("Group 1");
+ * console.debug("Debug message");
+ * console.groupEnd();
+ * console.info("Info message");
+ *
+ * // Output:
+ * // Hello, world!
+ * // Info message
+ * ```
  */
 export class FilterLogLevelStream<T extends LogLevel>
   extends TransformStream<Log> {