diff --git a/integration/pirc_compatibility.md b/integration/pirc_compatibility.md
new file mode 100644
index 00000000..cd8dbf80
--- /dev/null
+++ b/integration/pirc_compatibility.md
@@ -0,0 +1,29 @@
+# PiRC Integration Layer (v0.3)
+
+## Overview
+
+This extension is designed to integrate seamlessly with the existing PiRC structure.
+
+## Compatibility
+
+- Uses POS SDK from `docs/MERCHANT_INTEGRATION.md`
+- Metadata attaches to any contract in `contracts/`
+- Fully modular and spec-first
+
+## Integration Model
+
+1. Product registered off-chain
+2. Metadata stored and signed
+3. Verification via QR / NFC
+4. Optional on-chain anchoring (future)
+
+## Goal
+
+Provide a trust layer for:
+- Merchants
+- Buyers
+- Cross-border commerce
+
+## Status
+
+Ready for integration into PiRC ecosystem.