diff --git a/agent/context_compressor.py b/agent/context_compressor.py
index 9f90a96163..887be7f7bf 100644
--- a/agent/context_compressor.py
+++ b/agent/context_compressor.py
@@ -484,7 +484,18 @@ class ContextCompressor(ContextEngine):
             for i in range(len(result) - 1, -1, -1):
                 msg = result[i]
                 raw_content = msg.get("content") or ""
-                content_len = sum(len(p.get("text", "")) for p in raw_content) if isinstance(raw_content, list) else len(raw_content)
+                content_len = (
+                    sum(
+                        len(p.get("text", ""))
+                        if isinstance(p, dict)
+                        else len(p)
+                        if isinstance(p, str)
+                        else len(str(p))
+                        for p in raw_content
+                    )
+                    if isinstance(raw_content, list)
+                    else len(raw_content)
+                )
                 msg_tokens = content_len // _CHARS_PER_TOKEN + 10
                 for tc in msg.get("tool_calls") or []:
                     if isinstance(tc, dict):