diff --git a/shared-data/examples/famm_plasma_chiral_drag_witness.example.json b/shared-data/examples/famm_plasma_chiral_drag_witness.example.json
new file mode 100644
index 00000000..d43e769f
--- /dev/null
+++ b/shared-data/examples/famm_plasma_chiral_drag_witness.example.json
@@ -0,0 +1,7 @@
+{
+  "path_length_m": 1.0,
+  "alfven_speed_m_s": 10000.0,
+  "omega_rad_s": 1000.0,
+  "observed_rotation_rad": 0.05,
+  "tolerance_rad": 0.02
+}