diff --git a/examples/cosmosmesh_pilot.py b/examples/cosmosmesh_pilot.py
new file mode 100644
index 0000000..d2b357b
--- /dev/null
+++ b/examples/cosmosmesh_pilot.py
@@ -0,0 +1,61 @@
+"""CosmosMesh Interop Pilot
+
+A small end-to-end demonstration of the CosmosMesh interoperability surface
+using the CatOpt-like bridge primitives. It creates a minimal LocalProblem,
+SharedVariables, and PlanDelta, converts to the canonical IR via to_catopt,
+and back via from_catopt to verify round-tripping semantics.
+"""
+
+from __future__ import annotations
+
+import json
+
+from cosmosmesh_privacy_preserving_federated.catopt_bridge import (
+    LocalProblem,
+    SharedVariables,
+    PlanDelta,
+    to_catopt,
+    from_catopt,
+)
+
+
+def run_pilot():
+    # Build a tiny 2-asset scenario: rover and habitat (represented by IDs)
+    lp = LocalProblem(
+        id="lp-demo-1",
+        domain="space",
+        assets=["rover-alpha", "habitat-beta"],
+        objective={"type": "minimize", "payload": 10},
+        constraints={"energy": {"limit": 1000}},
+        version=1,
+    )
+
+    sv = SharedVariables(
+        forecasts={"energy": 42},
+        priors={"energy": 40},
+        version=1,
+    )
+
+    delta = PlanDelta(
+        delta={"allocation": {"rover-alpha": 0, "habitat-beta": 1}},
+        timestamp="2026-01-01T00:00:00Z",
+        author="pilot",
+        contract_id="demo-contract-1",
+        signature="sig-demo",
+    )
+
+    # Canonical IR
+    catopt = to_catopt(lp, sv, delta)
+    print("Canonical IR (trimmed):")
+    print(json.dumps(catopt, indent=2))
+
+    # Round-trip back from canonical IR
+    recon = from_catopt(catopt)
+    print("Recovered payload:")
+    print(json.dumps(recon, indent=2))
+
+    return catopt, recon
+
+
+if __name__ == "__main__":
+    run_pilot()
diff --git a/tests/test_pilot.py b/tests/test_pilot.py
new file mode 100644
index 0000000..1670367
--- /dev/null
+++ b/tests/test_pilot.py
@@ -0,0 +1,25 @@
+import json
+import sys
+import os
+
+# Ensure the local src layout is importable in test runs
+SRC_DIR = os.path.join(os.path.dirname(os.path.dirname(__file__)), "src")
+if os.path.isdir(SRC_DIR) and SRC_DIR not in sys.path:
+    sys.path.insert(0, SRC_DIR)
+
+from cosmosmesh_privacy_preserving_federated.catopt_bridge import to_catopt, from_catopt, LocalProblem, SharedVariables, PlanDelta
+
+
+def test_pilot_roundtrip_basic():
+    lp = LocalProblem(
+        id="lp-t", domain="space", assets=["rover-1"], objective={"type": "min", "value": 1}, constraints={"time": 60}, version=1
+    )
+    sv = SharedVariables(forecasts={"energy": 5}, priors={"energy": 4}, version=1)
+    delta = PlanDelta(delta={"task": "sample"}, timestamp="2026-01-01T00:00:00Z", author="tester", contract_id="c1", signature="sig")
+
+    catopt = to_catopt(lp, sv, delta)
+    recon = from_catopt(catopt)
+
+    # Basic shape validation of round-trip results
+    assert isinstance(recon.get("LocalProblem"), dict)
+    assert isinstance(recon.get("PlanDelta"), dict)