diff --git a/docs/platforms/php/agent/index.mdx b/docs/platforms/php/agent/index.mdx
index 4bbaef2fb53cd5..206a609bcc9148 100644
--- a/docs/platforms/php/agent/index.mdx
+++ b/docs/platforms/php/agent/index.mdx
@@ -119,3 +119,13 @@ The default builder-created client includes fallback delivery. If the local
 agent handoff fails, the client sends the envelope directly to Sentry using the
 normal SDK HTTP client. This preserves delivery, but the request loses the
 latency benefit while the agent is unavailable.
+
+## Observability
+
+To monitor events sent through the agent, add a dashboard widget in Sentry.
+Click "Add Widget" on a dashboard, then select the "Errors" dataset. Choose a
+time-series visualization, set the Y-Axis to `count()`, and add
+`sentry.php.agent` to Group by.
+
+The chart shows error counts grouped by the `sentry.php.agent` tag, so you can
+see how many events were handled by the agent.