diff --git a/src/hippocampus/query/parser.rs b/src/hippocampus/query/parser.rs
index ccc3ae5..6c2e826 100644
--- a/src/hippocampus/query/parser.rs
+++ b/src/hippocampus/query/parser.rs
@@ -97,7 +97,8 @@ peg::parser! {
             / "select:" f:field_list_colon() { Stage::Transform(Transform::Select(f)) }
             / "type:" t:ident() { make_type_filter(&t) }
             / "age:" c:cmp_duration() { Stage::Filter(Filter::Age(c)) }
-            / "key:" g:ident() { Stage::Filter(Filter::KeyGlob(g)) }
+            / "key:" g:glob_pattern() { Stage::Filter(Filter::KeyGlob(g)) }
+            / "!key:" g:glob_pattern() { Stage::Filter(Filter::Negated(Box::new(Filter::KeyGlob(g)))) }
             / "provenance:" p:ident() { Stage::Filter(Filter::Provenance(p)) }
             / "not-visited:" a:ident() "," d:integer() { Stage::Filter(Filter::NotVisited { agent: a, duration: d as i64 }) }
             / "visited:" a:ident() { Stage::Filter(Filter::Visited { agent: a }) }
@@ -220,6 +221,12 @@ peg::parser! {
             = s:$(['a'..='z' | 'A'..='Z' | '_']['a'..='z' | 'A'..='Z' | '0'..='9' | '_' | '-' | '.']*) {
                 s.to_string()
             }
+
+        // Glob pattern for key matching (allows * and ?)
+        rule glob_pattern() -> String
+            = s:$(['a'..='z' | 'A'..='Z' | '0'..='9' | '_' | '-' | '.' | '*' | '?']+) {
+                s.to_string()
+            }
     }
 }