diff --git a/README.md b/README.md
index fd44d8a..2869ae3 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,11 @@ EnergiaBridge: Canonical interoperability bridge
 - Provides to_canonical and from_canonical helpers to translate between per-site local problems and a global, pluggable transport layer.
 - Serves as the first integration point toward a CatOpt-style interoperability layer, enabling plug-and-play adapters across DERs, pumps, and building systems without re-deriving global models.
 - This module is intentionally small and will be extended with versioning, validation, and transport glue in follow-on iterations.
+
+MVP Plan & Collaboration
+- Phase 0 (0-2 weeks): finalize core protocol primitives (Objects, Morphisms, PlanDelta), publish contract schemas, and implement two starter adapters (DER controller and building load controller) with TLS placeholders and a minimal ADMM-lite solver scaffold.
+- Phase 1 (2-4 weeks): add a small governance ledger scaffold, a simple conformance harness for adapters, and secure delta-sync with bounded staleness.
+- Phase 2 (4-6 weeks): introduce a minimal adapter marketplace entry points, a codegen path stub, and a reference UI sketch for graph-based device-constraint composition.
+- Phase 3 (6-12 weeks): hardware-in-the-loop validation with 2-3 devices and a cross-domain simulated domain; measure convergence, latency, and governance auditability.
+- Deliverables: DSL sketch, two starter adapters, canonical bridge, registry conformance tests, and a lightweight solver.
+- How to contribute: open pull requests against gridverse/ and follow AGENTS.md guidance for testing and packaging.
diff --git a/gridverse/adapter_marketplace/building_load_controller.py b/gridverse/adapter_marketplace/building_load_controller.py
new file mode 100644
index 0000000..05ec8ca
--- /dev/null
+++ b/gridverse/adapter_marketplace/building_load_controller.py
@@ -0,0 +1,17 @@
+"""Starter Building Load Controller Adapter
+
+Tiny adapter that maps a LocalProblem payload into a canonical form for
+building-level heating/cooling control side. Exposes a tiny interface aligned
+with the MVP contract expectations.
+"""
+
+from typing import Dict, Any
+
+
+class BuildingLoadControllerAdapter:
+    def adapt(self, lp: Dict[str, Any]) -> Dict[str, Any]:
+        # Very small shim: pass through with a light wrapper
+        return {"adapter": "BuildingLoadControllerAdapter", "adapted": lp}
+
+    def contract(self) -> Dict[str, Any]:
+        return {"name": "BuildingLoadControllerAdapter", "version": "0.1.0"}
diff --git a/gridverse/adapter_marketplace/der_controller.py b/gridverse/adapter_marketplace/der_controller.py
new file mode 100644
index 0000000..13dcef3
--- /dev/null
+++ b/gridverse/adapter_marketplace/der_controller.py
@@ -0,0 +1,19 @@
+"""Starter DER Controller Adapter
+
+Minimal adapter that translates a LocalProblem payload into a canonical
+representation for GridVerse. The adapter exposes a small surface compatible
+with the MVP registry and conformance tests:
+- adapt(lp: dict) -> dict
+- contract() -> dict
+"""
+
+from typing import Dict, Any
+
+
+class DERControllerAdapter:
+    def adapt(self, lp: Dict[str, Any]) -> Dict[str, Any]:
+        # Minimal translation: wrap input as adapted payload with a DER-flavor tag
+        return {"adapter": "DERControllerAdapter", "adapted": lp}
+
+    def contract(self) -> Dict[str, Any]:
+        return {"name": "DERControllerAdapter", "version": "0.1.0"}
diff --git a/gridverse/dsl_sketch.md b/gridverse/dsl_sketch.md
index 2a9b2e4..3c937e5 100644
--- a/gridverse/dsl_sketch.md
+++ b/gridverse/dsl_sketch.md
@@ -22,3 +22,8 @@ Notes
 - This DSL is intentionally minimal to bootstrap interoperability without
   introducing a full language runtime.
 - A real system would support richer types, validation, and versioning hooks.
+
+EnergiaBridge notes
+- Bridge: Canonical GridVerse -> vendor-agnostic form; map LocalProblem/SharedVariables/PlanDelta to interoperable contracts.
+- The registry keeps contract schemas and adapter descriptors with per-message metadata (version, timestamp, nonce).
+- A minimal example showing a translated LocalProblem into a CanonicalBundle via the EnergiaBridge.