diff --git a/AGENTS.md b/AGENTS.md
index c6a18d5..ba8fda7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -135,6 +135,14 @@ session with **no other memory of this project**. So:
     surfaces the viewer's role — spot=Owner, shop=**Verified owner** (NIP-05 domain
     match), crew=Owner/Admin, event=Organiser — on detail pages **and** on the card
     studio's type chips (`role.*` i18n).
+    **NFC (2026-10-02):** `src/lib/nfc.ts` writes the card/pass **verify URL** —
+    **Web NFC** (`NDEFReader`) on Chrome/Android, or the **local Android plugin**
+    `packages/skatespots-nfc` (`SkateSpotsNfc`, registered **by name** via
+    `@capacitor/core`) in the APK, because Web NFC isn't exposed in the Capacitor
+    WebView. `NfcWriteButton` renders **nothing** where unsupported (iOS/desktop),
+    wired to the issuer lists + the holder's "My passes". ⚠️ **UNVERIFIED** (needs
+    `cap sync` + a device); iOS can't write tags. A tag carries only the pointer —
+    trust is still the relay signature.
 - **Marketplace**: `GearSwapPage` (grid) + `MarketplaceItemCard` and a listing
   detail page at **`/listing/:pubkey/:identifier`**. Trade/escrow actions live in
   the shared **`ListingTradeActions`** (used by BOTH the card and the detail page