diff --git a/packages/terratorch/benchmark_packages/test-package/pyproject.toml b/packages/terratorch/benchmark_packages/test-package/pyproject.toml
new file mode 100644
index 0000000..5fdc6d4
--- /dev/null
+++ b/packages/terratorch/benchmark_packages/test-package/pyproject.toml
@@ -0,0 +1,11 @@
+[project]
+name = "test-package"
+version = "0.1.0"
+description = "Custom experiment package for terratorch benchmarks"
+requires-python = ">=3.10"
+dependencies = [
+  "orchestrator",
+]
+
+[project.entry-points."ado.custom_experiments"]
+my_experiment = "test_package.experiments"
diff --git a/packages/terratorch/benchmark_packages/test-package/test_package/__init__.py b/packages/terratorch/benchmark_packages/test-package/test_package/__init__.py
new file mode 100644
index 0000000..1c62e13
--- /dev/null
+++ b/packages/terratorch/benchmark_packages/test-package/test_package/__init__.py
@@ -0,0 +1,8 @@
+# Copyright IBM Corp. 2026
+# SPDX-License-Identifier: Apache-2.0
+
+"""Test package for custom experiments."""
+
+__version__ = "0.1.0"
+
+# Made with Bob
diff --git a/packages/terratorch/benchmark_packages/test-package/test_package/experiments.py b/packages/terratorch/benchmark_packages/test-package/test_package/experiments.py
new file mode 100644
index 0000000..13e8149
--- /dev/null
+++ b/packages/terratorch/benchmark_packages/test-package/test_package/experiments.py
@@ -0,0 +1,31 @@
+# Copyright IBM Corporation 2025, 2026
+# SPDX-License-Identifier: MIT
+
+"""Custom experiments for terratorch benchmarks."""
+
+from typing import Any
+
+from orchestrator.modules.actuators.custom_experiments import custom_experiment
+
+
+@custom_experiment(output_property_identifiers=["result"])
+def echo_experiment(input_string: str) -> dict[str, Any]:
+    """
+    Simple custom experiment that echoes the input string.
+
+    This is a minimal example demonstrating the structure required
+    by ADO (Automated Design Optimization).
+
+    Parameters
+    ----------
+    input_string : str
+        The string to echo back
+
+    Returns
+    -------
+    dict[str, Any]
+        Dictionary containing 'result' key with the input string
+    """
+    return {
+        "result": input_string,
+    }
diff --git a/packages/terratorch/models/prithvi/benchmark_instances/test_benchmark/space.yaml b/packages/terratorch/models/prithvi/benchmark_instances/test_benchmark/space.yaml
new file mode 100644
index 0000000..f30613c
--- /dev/null
+++ b/packages/terratorch/models/prithvi/benchmark_instances/test_benchmark/space.yaml
@@ -0,0 +1,13 @@
+# ADO Discovery Space Configuration for Test Benchmark
+# This benchmark tests the echo_experiment custom experiment
+
+# Entity space defining parameter values for the benchmark
+entitySpace:
+  - identifier: input_string
+    propertyDomain:
+      values: ["hello world", "test string", "benchmark test"]
+
+# List of experiments to run
+experiments:
+  - actuatorIdentifier: custom_experiments
+    experimentIdentifier: echo_experiment
diff --git a/packages/terratorch/models/terramind_base_fire/benchmark_instances/test_benchmark/space.yaml b/packages/terratorch/models/terramind_base_fire/benchmark_instances/test_benchmark/space.yaml
new file mode 100644
index 0000000..5ad9d91
--- /dev/null
+++ b/packages/terratorch/models/terramind_base_fire/benchmark_instances/test_benchmark/space.yaml
@@ -0,0 +1,15 @@
+# ADO Discovery Space Configuration for Test Benchmark
+# This benchmark tests the echo_experiment custom experiment
+
+# Entity space defining parameter values for the benchmark
+entitySpace:
+  - identifier: input_string
+    propertyDomain:
+      values: ["hello world", "test string", "benchmark test"]
+
+# List of experiments to run
+experiments:
+  - actuatorIdentifier: custom_experiments
+    experimentIdentifier: echo_experiment
+
+# Made with Bob
diff --git a/packages/terratorch/nexus.yaml b/packages/terratorch/nexus.yaml
index adeaede..b0a9dc6 100644
--- a/packages/terratorch/nexus.yaml
+++ b/packages/terratorch/nexus.yaml
@@ -1,2 +1,8 @@
 package:
   name: terratorch
+
+  # Register benchmark packages with custom experiments
+  benchmark_packages:
+    - requirement_specifier: "./packages/terratorch/benchmark_packages/test-package"
+      experiments:
+        - "echo_experiment"