diff --git a/src/adapters/wallet.js b/src/adapters/wallet.js
index fa6c861..c567d17 100644
--- a/src/adapters/wallet.js
+++ b/src/adapters/wallet.js
@@ -3,14 +3,15 @@ import { schnorr, secp256k1 } from '@noble/curves/secp256k1';
 import { bytesToHex } from '@noble/curves/abstract/utils';
 
 export const NETWORK = 'super-testnet-local-v0';
+
 export class TestWallet {
   constructor(secret) {
     if (!/^[0-9a-f]{64}$/.test(secret) || !secp256k1.utils.isValidPrivateKey(secret)) {
       throw new Error('Invalid test wallet key. Load a Super Testnet v0 backup.');
     }
+    this.kind = 'test-wallet';
     this.secret = secret;
     this.pubkey = bytesToHex(schnorr.getPublicKey(secret));
-    // Untweaked key-path output, as in testnet_generator. Never a mainnet address.
     this.address = Address.p2tr.fromPubKey(this.pubkey, 'regtest');
     this.script = ['OP_1', this.pubkey];
   }
@@ -21,8 +22,40 @@ export class TestWallet {
     }
     return new TestWallet(backup.secret);
   }
-  backup() { return { kind: 'test-wallet', version: 1, network: NETWORK, secret: this.secret }; }
+  backup() { return { kind:'test-wallet', version:1, network:NETWORK, secret:this.secret }; }
   sign(tx, extension, inputIndex = 0) {
     return Signer.taproot.sign(this.secret, tx, inputIndex, extension ? { extension } : {}).hex;
   }
 }
+
+export class ExtensionWallet {
+  constructor(account, provider = null) {
+    if (account?.network !== NETWORK || !/^[0-9a-f]{64}$/.test(account?.pubkey ?? '')) {
+      throw new Error('Inscriboor returned an incompatible Super Testnet account.');
+    }
+    const address = Address.p2tr.fromPubKey(account.pubkey, 'regtest');
+    if (account.address !== address) throw new Error('Inscriboor account address does not match its public key.');
+    this.kind = 'extension-wallet';
+    this.pubkey = account.pubkey;
+    this.address = address;
+    this.script = ['OP_1', this.pubkey];
+    this.provider = provider;
+  }
+  static load(backup) {
+    if (backup?.kind !== 'extension-wallet' || backup?.version !== 1 || backup?.network !== NETWORK) {
+      throw new Error('Unsupported Inscriboor wallet descriptor.');
+    }
+    return new ExtensionWallet(backup);
+  }
+  attach(provider) { this.provider = provider; return this; }
+  backup() { return { kind:'extension-wallet', version:1, network:NETWORK, pubkey:this.pubkey, address:this.address }; }
+  async signInscription(params) {
+    if (!this.provider?.request) throw new Error('Reconnect the Inscriboor extension before signing.');
+    return this.provider.request({ method:'ord_signInscription', params });
+  }
+}
+
+export function loadWalletBackup(backup) {
+  if (backup?.kind === 'extension-wallet') return ExtensionWallet.load(backup);
+  return TestWallet.load(backup);
+}