diff --git a/src/blackboard/db.py b/src/blackboard/db.py
index 720ce1a..8fa3111 100644
--- a/src/blackboard/db.py
+++ b/src/blackboard/db.py
@@ -224,6 +224,9 @@ EXPERIENCE_STATUSES = frozenset({"draft", "active", "deprecated"})
 
 ATTEMPT_OUTCOMES = frozenset({
     "completed", "blocked", "crashed", "timed_out", "spawn_failed", "reclaimed",
+    "agent_failed", "fallback_timeout", "gateway_timeout", "gateway_unreachable",
+    "auth_failed", "api_error", "compact_failed", "lock_conflict", "agent_error",
+    "compact_hanging", "max_monitor_timeouts", "session_stuck", "max_retries",
 })