diff --git a/tools/process_registry.py b/tools/process_registry.py
index 39d3704b18..9f57d3eaeb 100644
--- a/tools/process_registry.py
+++ b/tools/process_registry.py
@@ -585,7 +585,10 @@ class ProcessRegistry:
         from tools.ansi_strip import strip_ansi
         from tools.terminal_tool import _interrupt_event
 
-        default_timeout = int(os.getenv("TERMINAL_TIMEOUT", "180"))
+        try:
+            default_timeout = int(os.getenv("TERMINAL_TIMEOUT", "180"))
+        except (ValueError, TypeError):
+            default_timeout = 180
         max_timeout = default_timeout
         requested_timeout = timeout
         timeout_note = None
diff --git a/tools/send_message_tool.py b/tools/send_message_tool.py
index c7c71c8c68..91f752b413 100644
--- a/tools/send_message_tool.py
+++ b/tools/send_message_tool.py
@@ -689,7 +689,10 @@ async def _send_email(extra, chat_id, message):
     address = extra.get("address") or os.getenv("EMAIL_ADDRESS", "")
     password = os.getenv("EMAIL_PASSWORD", "")
     smtp_host = extra.get("smtp_host") or os.getenv("EMAIL_SMTP_HOST", "")
-    smtp_port = int(os.getenv("EMAIL_SMTP_PORT", "587"))
+    try:
+        smtp_port = int(os.getenv("EMAIL_SMTP_PORT", "587"))
+    except (ValueError, TypeError):
+        smtp_port = 587
 
     if not all([address, password, smtp_host]):
         return {"error": "Email not configured (EMAIL_ADDRESS, EMAIL_PASSWORD, EMAIL_SMTP_HOST required)"}
diff --git a/tools/skills_hub.py b/tools/skills_hub.py
index 0c218c5b65..c73527ff23 100644
--- a/tools/skills_hub.py
+++ b/tools/skills_hub.py
@@ -1788,7 +1788,10 @@ class ClawHubSource(SkillSource):
                     follow_redirects=True,
                 )
                 if resp.status_code == 429:
-                    retry_after = int(resp.headers.get("retry-after", "5"))
+                    try:
+                        retry_after = int(resp.headers.get("retry-after", "5"))
+                    except (ValueError, TypeError):
+                        retry_after = 5
                     retry_after = min(retry_after, 15)  # Cap wait time
                     logger.debug(
                         "ClawHub download rate-limited for %s, retrying in %ds (attempt %d/%d)",