diff --git a/loop/server/loophttp.go b/loop/server/loophttp.go
index dacc4f6..856932d 100644
--- a/loop/server/loophttp.go
+++ b/loop/server/loophttp.go
@@ -706,6 +706,35 @@
 		w.WriteHeader(http.StatusOK)
 	})
 
+	// Handler for POST /external - e.g. where you send messages about e.g. github workflow
+	// outcomes and other external events that the agent wouldn't otherwise be aware of.
+	s.mux.HandleFunc("/external", func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			httpError(w, r, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		var msg loop.ExternalMessage
+
+		decoder := json.NewDecoder(r.Body)
+		if err := decoder.Decode(&msg); err != nil {
+			httpError(w, r, "Invalid request body: "+err.Error(), http.StatusBadRequest)
+			return
+		}
+		defer r.Body.Close()
+
+		if msg.TextContent == "" {
+			httpError(w, r, "Message cannot be empty", http.StatusBadRequest)
+			return
+		}
+
+		if err := agent.ExternalMessage(r.Context(), msg); err != nil {
+			httpError(w, r, "agent ExternalMessage error: "+err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		w.WriteHeader(http.StatusOK)
+	})
+
 	// Handler for POST /upload - uploads a file to /tmp
 	s.mux.HandleFunc("/upload", func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodPost {
diff --git a/loop/server/loophttp_test.go b/loop/server/loophttp_test.go
index fa591b2..8d4583e 100644
--- a/loop/server/loophttp_test.go
+++ b/loop/server/loophttp_test.go
@@ -38,6 +38,11 @@
 	model                    string
 }
 
+// ExternalMessage implements loop.CodingAgent.
+func (m *mockAgent) ExternalMessage(ctx context.Context, msg loop.ExternalMessage) error {
+	panic("unimplemented")
+}
+
 // TokenContextWindow implements loop.CodingAgent.
 func (m *mockAgent) TokenContextWindow() int {
 	return 200000