diff --git a/config/dev.overlay.yaml b/config/dev.overlay.yaml
new file mode 100644
index 00000000..e0dd5537
--- /dev/null
+++ b/config/dev.overlay.yaml
@@ -0,0 +1,20 @@
+# Dev environment overlay
+# Higher verbosity, faster iteration
+
+model:
+  temperature: 0.9
+  max_tokens: 2048
+
+cron:
+  interval_seconds: 60
+  max_concurrent: 1
+
+display:
+  tool_progress: true
+
+session:
+  save_trajectories: true
+  max_iterations: 30
+
+logging:
+  level: "DEBUG"