diff --git a/message_ix_models/project/scenariomip/__init__.py b/message_ix_models/project/scenariomip/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/message_ix_models/project/scenariomip/workflow.py b/message_ix_models/project/scenariomip/workflow.py
new file mode 100644
index 0000000000..86973e71c3
--- /dev/null
+++ b/message_ix_models/project/scenariomip/workflow.py
@@ -0,0 +1,125 @@
+from typing import TYPE_CHECKING, Optional
+
+from message_ix_models.workflow import Workflow
+
+if TYPE_CHECKING:
+    from message_ix_models import Context
+
+
+def step_01() -> None:
+    """Clean Timeseries."""
+    raise NotImplementedError
+
+
+def step_02() -> None:
+    """Add Land-use Emulator."""
+    raise NotImplementedError
+
+
+def step_03() -> None:
+    """Add Biomass Trade."""
+    raise NotImplementedError
+
+
+def step_04() -> None:
+    """Solve for Historic Reporting."""
+    raise NotImplementedError
+
+
+def step_05() -> None:
+    """Build Materials."""
+    raise NotImplementedError
+
+
+def step_06() -> None:
+    """Add DAC (Direct Air Capture)."""
+    raise NotImplementedError
+
+
+def step_07() -> None:
+    """Add Non-CO2 GHGs."""
+    raise NotImplementedError
+
+
+def step_08() -> None:
+    """Add Water."""
+    raise NotImplementedError
+
+
+def step_09() -> None:
+    """Add Techno-economic Parameters."""
+    raise NotImplementedError
+
+
+def step_10() -> None:
+    """Add Balance Equalities (some petrochemical trade balances?)."""
+    raise NotImplementedError
+
+
+def step_11() -> None:
+    """OBSOLETE."""
+    raise NotImplementedError
+
+
+def step_12() -> None:
+    """Gas Mix Limitations (constrain gas use in industries)."""
+    raise NotImplementedError
+
+
+def step_13() -> None:
+    """Add Slack and Constraints (so we need to update the slacks)."""
+    raise NotImplementedError
+
+
+def step_14() -> None:
+    """Add Shipping."""
+    raise NotImplementedError
+
+
+def step_15() -> None:
+    """Prepare for Macro Calibration."""
+    raise NotImplementedError
+
+
+def step_16() -> None:
+    """Calibrate Macro."""
+    raise NotImplementedError
+
+
+STEP_ORDER = [
+    step_01,
+    step_02,
+    step_03,
+    step_04,
+    step_05,
+    step_06,
+    step_07,
+    step_08,
+    step_09,
+    step_10,
+    step_11,
+    step_12,
+    step_13,
+    step_14,
+    step_15,
+    step_16,
+]
+
+
+def generate_workflow(
+    context: "Context", step_order: Optional[list] = None
+) -> "Workflow":
+    """Generate the ScenarioMIP workflow."""
+    wf = Workflow(context)
+
+    prev = wf.add_step("base", None)
+
+    step_order = step_order or STEP_ORDER
+
+    for i, func in enumerate(step_order, start=1):
+        prev = wf.add_step(f"step_{i}", prev, func)
+
+    # "all" is an alias for the last step, whatever it is
+    wf.add("all", prev)
+
+    return wf
diff --git a/message_ix_models/tests/project/test_scenariomip.py b/message_ix_models/tests/project/test_scenariomip.py
new file mode 100644
index 0000000000..4c11c3712e
--- /dev/null
+++ b/message_ix_models/tests/project/test_scenariomip.py
@@ -0,0 +1,38 @@
+import pytest
+
+from message_ix_models import Context
+from message_ix_models.project.scenariomip import workflow as w
+from message_ix_models.project.scenariomip.workflow import generate_workflow
+
+
+@pytest.mark.parametrize(
+    "step_order",
+    (
+        None,
+        [
+            w.step_01,
+            w.step_02,
+            w.step_03,
+            w.step_04,
+            w.step_05,
+            w.step_10,
+            w.step_12,
+            w.step_06,
+            w.step_07,
+            w.step_08,
+            w.step_09,
+            w.step_11,
+            w.step_13,
+            w.step_14,
+            w.step_15,
+            w.step_16,
+        ],
+    ),
+)
+def test_generate_workflow(test_context: Context, step_order) -> None:
+    wf = generate_workflow(test_context, step_order)
+
+    print(wf.describe("all"))
+
+    # Fails, all steps NotImplemented
+    wf.run("all")