diff --git a/src/discord/monitor/agent-components.ts b/src/discord/monitor/agent-components.ts
index 22f4fc90562..0f5a871f64e 100644
--- a/src/discord/monitor/agent-components.ts
+++ b/src/discord/monitor/agent-components.ts
@@ -423,9 +423,26 @@ function parseAgentComponentData(data: ComponentData): {
       : (data as Record<string, unknown>).componentId) ??
     (data as Record<string, unknown>).componentId;
 
+  const decodeSafe = (value: string): string => {
+    // `cid` values may be raw (not URI-encoded). Guard against malformed % sequences.
+    // Only attempt decoding when it looks like it contains percent-encoding.
+    if (!value.includes("%")) {
+      return value;
+    }
+    // If it has a % but not a valid %XX sequence, skip decode.
+    if (!/%[0-9A-Fa-f]{2}/.test(value)) {
+      return value;
+    }
+    try {
+      return decodeURIComponent(value);
+    } catch {
+      return value;
+    }
+  };
+
   const componentId =
     typeof raw === "string"
-      ? decodeURIComponent(raw)
+      ? decodeSafe(raw)
       : typeof raw === "number"
         ? String(raw)
         : null;