diff --git a/multichain-testing/test/account-balance-queries.test.ts b/multichain-testing/test/account-balance-queries.test.ts
index c067ced9446..606d98f471e 100644
--- a/multichain-testing/test/account-balance-queries.test.ts
+++ b/multichain-testing/test/account-balance-queries.test.ts
@@ -40,7 +40,7 @@ const queryAccountBalances = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
     } = t.context;
 
@@ -67,7 +67,8 @@ const queryAccountBalances = test.macro({
     });
 
     const offerResult = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+      // @ts-expect-error UpdateRecord may not have 'status'
       ({ status }) => status.id === offerId && (status.result || status.error),
       `${offerId} offer result is in vstorage`,
       MAKE_ACCOUNT_AND_QUERY_BALANCE_TIMEOUT,
@@ -83,6 +84,7 @@ const queryAccountBalances = test.macro({
     );
 
     const {
+      // @ts-expect-error UpdateRecord may not have 'status'
       status: { result, error },
     } = offerResult;
     if (expectValidResult) {
@@ -110,7 +112,7 @@ const queryAccountBalance = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -146,7 +148,8 @@ const queryAccountBalance = test.macro({
     });
 
     const offerResult = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+      // @ts-expect-error UpdateRecord may not have 'status'
       ({ status }) => status.id === offerId && (status.result || status.error),
       `${offerId} offer result is in vstorage`,
       MAKE_ACCOUNT_AND_QUERY_BALANCE_TIMEOUT,
@@ -162,6 +165,7 @@ const queryAccountBalance = test.macro({
     );
 
     const {
+      // @ts-expect-error UpdateRecord may not have 'status'
       status: { result, error },
     } = offerResult;
     if (expectValidResult) {
diff --git a/multichain-testing/test/auto-stake-it.test.ts b/multichain-testing/test/auto-stake-it.test.ts
index 10e3bac8db8..e13a9cca186 100644
--- a/multichain-testing/test/auto-stake-it.test.ts
+++ b/multichain-testing/test/auto-stake-it.test.ts
@@ -36,7 +36,7 @@ const autoStakeItScenario = test.macro({
     // 1. setup
     const {
       wallets,
-      vstorageClient,
+      smartWalletKit,
       provisionSmartWallet,
       retryUntilCondition,
       useChain,
@@ -98,9 +98,9 @@ const autoStakeItScenario = test.macro({
 
     // FIXME https://github.com/Agoric/agoric-sdk/issues/9643
     const currentWalletRecord = await retryUntilCondition(
-      () =>
-        vstorageClient.queryData(`published.wallet.${agoricUserAddr}.current`),
+      () => smartWalletKit.readPublished(`wallet.${agoricUserAddr}.current`),
       ({ offerToPublicSubscriberPaths }) =>
+        // @ts-expect-error retryUntilCondition expects a boolean return
         Object.fromEntries(offerToPublicSubscriberPaths)[offerId],
       `${offerId} continuing invitation is in vstorage`,
     );
@@ -118,6 +118,7 @@ const autoStakeItScenario = test.macro({
       .split('.')
       .pop();
     console.log({ lcaAddress, icaAddress });
+    assert(lcaAddress && icaAddress);
     t.regex(lcaAddress, /^agoric1/, 'LOA address is valid');
     t.regex(
       icaAddress,
diff --git a/multichain-testing/test/basic-flows.test.ts b/multichain-testing/test/basic-flows.test.ts
index 1d53b4aae8d..e8a16e48181 100644
--- a/multichain-testing/test/basic-flows.test.ts
+++ b/multichain-testing/test/basic-flows.test.ts
@@ -38,7 +38,7 @@ const makeAccountScenario = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
     } = t.context;
 
@@ -66,8 +66,9 @@ const makeAccountScenario = test.macro({
     // TODO fix above so we don't have to poll for the offer result to be published
     // https://github.com/Agoric/agoric-sdk/issues/9643
     const currentWalletRecord = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
       ({ offerToPublicSubscriberPaths }) =>
+        // @ts-expect-error retryUntilCondition expects a boolean return
         Object.fromEntries(offerToPublicSubscriberPaths)[offerId],
       `${offerId} continuing invitation is in vstorage`,
     );
@@ -80,17 +81,19 @@ const makeAccountScenario = test.macro({
       .split('.')
       .pop();
     t.log('Got address:', address);
+    assert(address);
     t.regex(
       address,
       new RegExp(`^${config.expectedAddressPrefix}1`),
       `address for ${chainName} is valid`,
     );
 
-    const latestWalletUpdate = await vstorageClient.queryData(
-      `published.wallet.${agoricAddr}`,
+    const latestWalletUpdate = await smartWalletKit.readPublished(
+      `wallet.${agoricAddr}`,
     );
     t.log('latest wallet update', latestWalletUpdate);
     t.like(
+      // @ts-expect-error UpdateRecord may not have 'status'
       latestWalletUpdate.status,
       {
         id: offerId,
diff --git a/multichain-testing/test/chain-queries.test.ts b/multichain-testing/test/chain-queries.test.ts
index 56673742582..b1c0fae4e54 100644
--- a/multichain-testing/test/chain-queries.test.ts
+++ b/multichain-testing/test/chain-queries.test.ts
@@ -48,7 +48,7 @@ const queryICQChain = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -108,7 +108,8 @@ const queryICQChain = test.macro({
     });
 
     const offerResult = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+      // @ts-expect-error UpdateRecord may not have 'status'
       ({ status }) => status.id === offerId && (status.result || status.error),
       `${offerId} offer result is in vstorage`,
       {
@@ -117,6 +118,7 @@ const queryICQChain = test.macro({
     );
     t.log('ICQ Query Offer Result', offerResult);
     const {
+      // @ts-expect-error UpdateRecord may not have 'status'
       status: { result, error },
     } = offerResult;
     t.is(error, undefined, 'No error observed');
@@ -160,7 +162,7 @@ const queryChainWithoutICQ = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -200,7 +202,8 @@ const queryChainWithoutICQ = test.macro({
     });
 
     const offerResult = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+      // @ts-expect-error UpdateRecord may not have 'status'
       ({ status }) => status.id === offerId && (status.result || status.error),
       `${offerId} continuing invitation is in vstorage`,
       {
@@ -208,6 +211,7 @@ const queryChainWithoutICQ = test.macro({
       },
     );
     t.is(
+      // @ts-expect-error UpdateRecord may not have 'status'
       offerResult.status.error,
       `Error: Queries not available for chain "${chain_id}"`,
       'Queries not available error returned',
@@ -216,7 +220,7 @@ const queryChainWithoutICQ = test.macro({
 });
 
 test.serial('Send Local Query from chain object', async t => {
-  const { wallets, provisionSmartWallet, vstorageClient, retryUntilCondition } =
+  const { wallets, provisionSmartWallet, smartWalletKit, retryUntilCondition } =
     t.context;
 
   const agoricAddr = wallets['agoric'];
@@ -268,7 +272,8 @@ test.serial('Send Local Query from chain object', async t => {
   });
 
   const offerResult = await retryUntilCondition(
-    () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+    () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+    // @ts-expect-error UpdateRecord may not have 'status'
     ({ status }) => status.id === offerId && (status.result || status.error),
     `${offerId} continuing invitation is in vstorage`,
     {
@@ -276,6 +281,7 @@ test.serial('Send Local Query from chain object', async t => {
     },
   );
 
+  // @ts-expect-error UpdateRecord may not have 'status'
   const parsedResults = JSON.parse(offerResult.status.result);
   t.truthy(parsedResults[0].height, 'query height is returned');
   t.is(parsedResults[0].error, '', 'error is empty');
diff --git a/multichain-testing/test/deposit-withdraw-lca.test.ts b/multichain-testing/test/deposit-withdraw-lca.test.ts
index 7d1cbafa97c..1bcb54746ab 100644
--- a/multichain-testing/test/deposit-withdraw-lca.test.ts
+++ b/multichain-testing/test/deposit-withdraw-lca.test.ts
@@ -31,7 +31,7 @@ test('Deposit IST to orchAccount and then withdraw', async t => {
   const {
     wallets,
     provisionSmartWallet,
-    vstorageClient,
+    smartWalletKit,
     retryUntilCondition,
     useChain,
   } = t.context;
@@ -61,8 +61,9 @@ test('Deposit IST to orchAccount and then withdraw', async t => {
 
   // Wait for the orchAccount to be created
   const { offerToPublicSubscriberPaths } = await retryUntilCondition(
-    () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+    () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
     ({ offerToPublicSubscriberPaths }) =>
+      // @ts-expect-error retryUntilCondition expects a boolean return
       Object.fromEntries(offerToPublicSubscriberPaths)[makeAccountOfferId],
     'makeAccount offer result is in vstorage',
   );
@@ -72,10 +73,10 @@ test('Deposit IST to orchAccount and then withdraw', async t => {
     makeAccountOfferId
   ]!.account;
   const lcaAddress = accountStoragePath.split('.').at(-1);
-  t.truthy(lcaAddress, 'Account address is in storage path');
+  assert(lcaAddress, 'Account address is in storage path');
 
   // Get IST brand
-  const brands = await vstorageClient.queryData('published.agoricNames.brand');
+  const brands = await smartWalletKit.readPublished('agoricNames.brand');
   const istBrand = Object.fromEntries(brands).IST;
 
   // Deposit IST to orchAccount
@@ -150,7 +151,7 @@ test('Deposit IST to orchAccount and then withdraw', async t => {
 test.todo('Deposit and Withdraw ATOM/OSMO to localOrchAccount via offer #9966');
 
 test('Attempt to withdraw more than available balance', async t => {
-  const { wallets, provisionSmartWallet, vstorageClient, retryUntilCondition } =
+  const { wallets, provisionSmartWallet, smartWalletKit, retryUntilCondition } =
     t.context;
 
   // Provision the Agoric smart wallet
@@ -178,8 +179,9 @@ test('Attempt to withdraw more than available balance', async t => {
 
   // Wait for the orchAccount to be created
   const { offerToPublicSubscriberPaths } = await retryUntilCondition(
-    () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+    () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
     ({ offerToPublicSubscriberPaths }) =>
+      // @ts-expect-error retryUntilCondition expects a boolean return
       Object.fromEntries(offerToPublicSubscriberPaths)[makeAccountOfferId],
     `${makeAccountOfferId} offer result is in vstorage`,
   );
@@ -191,7 +193,7 @@ test('Attempt to withdraw more than available balance', async t => {
   t.truthy(lcaAddress, 'Account address is in storage path');
 
   // Get IST brand
-  const brands = await vstorageClient.queryData('published.agoricNames.brand');
+  const brands = await smartWalletKit.readPublished('agoricNames.brand');
   const istBrand = Object.fromEntries(brands).IST;
 
   // Attempt to withdraw more than available balance
@@ -212,11 +214,13 @@ test('Attempt to withdraw more than available balance', async t => {
 
   // Verify that the withdrawal failed
   const offerResult = await retryUntilCondition(
-    () => vstorageClient.queryData(`published.wallet.${agoricAddr}`),
+    () => smartWalletKit.readPublished(`wallet.${agoricAddr}`),
+    // @ts-expect-error UpdateRecord may not have 'status'
     ({ status }) => status.id === withdrawOfferId && status.error !== undefined,
     'Withdrawal offer error is in vstorage',
   );
   t.is(
+    // @ts-expect-error UpdateRecord may not have 'status'
     offerResult.status.error,
     'Error: One or more withdrawals failed ["[Error: cannot grab 200uist coins: 0uist is smaller than 200uist: insufficient funds]"]',
   );
diff --git a/multichain-testing/test/deposit-withdraw-portfolio.test.ts b/multichain-testing/test/deposit-withdraw-portfolio.test.ts
index 49b7f3d8ad7..3e9416b2098 100644
--- a/multichain-testing/test/deposit-withdraw-portfolio.test.ts
+++ b/multichain-testing/test/deposit-withdraw-portfolio.test.ts
@@ -34,7 +34,7 @@ const portfolioAccountScenario = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -64,8 +64,9 @@ const portfolioAccountScenario = test.macro({
     });
 
     const { offerToPublicSubscriberPaths } = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
       ({ offerToPublicSubscriberPaths }) =>
+        // @ts-expect-error retryUntilCondition expects a boolean return
         Object.fromEntries(offerToPublicSubscriberPaths)[
           makePortfolioAcctOfferId
         ],
@@ -81,13 +82,11 @@ const portfolioAccountScenario = test.macro({
 
     const agoricLcaAddress = accountPaths.agoric.split('.').at(-1);
     const remoteIcaAddress = accountPaths[chainName].split('.').at(-1);
-    t.truthy(agoricLcaAddress, 'Agoric LCA address is in storage path');
-    t.truthy(remoteIcaAddress, `${chainName} ICA address is in storage path`);
+    assert(agoricLcaAddress, 'Agoric LCA address is in storage path');
+    assert(remoteIcaAddress, `${chainName} ICA address is in storage path`);
 
     // Get IST brand
-    const brands = await vstorageClient.queryData(
-      'published.agoricNames.brand',
-    );
+    const brands = await smartWalletKit.readPublished('agoricNames.brand');
     const istBrand = Object.fromEntries(brands).IST;
 
     // Setup query clients
diff --git a/multichain-testing/test/fast-usdc/fast-usdc.test.ts b/multichain-testing/test/fast-usdc/fast-usdc.test.ts
index 4aecf11f3dc..d57798bc041 100644
--- a/multichain-testing/test/fast-usdc/fast-usdc.test.ts
+++ b/multichain-testing/test/fast-usdc/fast-usdc.test.ts
@@ -233,8 +233,8 @@ const advanceAndSettleScenario = test.macro({
     t.log(`EUD wallet created: ${EUD}`);
 
     // parameterize agoric address
-    const { settlementAccount } = await vstorageClient.queryData(
-      `published.${contractName}`,
+    const { settlementAccount } = await smartWalletKit.readPublished(
+      `${contractName}`,
     );
     t.log('settlementAccount address', settlementAccount);
 
diff --git a/multichain-testing/test/fast-usdc/noble-forwarding.test.ts b/multichain-testing/test/fast-usdc/noble-forwarding.test.ts
index 3f797deb8e4..604c0d534d3 100644
--- a/multichain-testing/test/fast-usdc/noble-forwarding.test.ts
+++ b/multichain-testing/test/fast-usdc/noble-forwarding.test.ts
@@ -8,7 +8,7 @@ import { makeQueryClient } from '../../tools/query.js';
 const test = anyTest as TestFn<SetupContext>;
 
 test('noble forwarding', async t => {
-  const { nobleTools, retryUntilCondition, useChain, vstorageClient } =
+  const { nobleTools, retryUntilCondition, useChain, smartWalletKit } =
     await commonSetup(t, { config: '../config.fusdc.yaml' });
 
   const agoricWallet = await createWallet('agoric');
@@ -21,7 +21,7 @@ test('noble forwarding', async t => {
   const connInfoPath = `published.agoricNames.chainConnection.${agoricChainId}_${nobleChainId}`;
   const {
     transferChannel: { counterPartyChannelId, channelId },
-  }: IBCConnectionInfo = await vstorageClient.queryData(connInfoPath);
+  } = (await smartWalletKit.readLatestHead(connInfoPath)) as IBCConnectionInfo;
 
   t.regex(
     counterPartyChannelId,
diff --git a/multichain-testing/test/ica-channel-close.test.ts b/multichain-testing/test/ica-channel-close.test.ts
index 13ad3ee2264..df1d87fc0b6 100644
--- a/multichain-testing/test/ica-channel-close.test.ts
+++ b/multichain-testing/test/ica-channel-close.test.ts
@@ -63,7 +63,7 @@ const intentionalCloseAccountScenario = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -90,8 +90,9 @@ const intentionalCloseAccountScenario = test.macro({
       proposal: {},
     });
     const currentWalletRecord = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
       ({ offerToPublicSubscriberPaths }) =>
+        // @ts-expect-error retryUntilCondition expects a boolean return
         Object.fromEntries(offerToPublicSubscriberPaths)[offerId],
       `${offerId} continuing invitation is in vstorage`,
     );
@@ -104,11 +105,10 @@ const intentionalCloseAccountScenario = test.macro({
     const address = accountStoragePath.split('.').pop();
     t.log('Got address:', address);
 
-    const {
-      remoteAddress,
-      localAddress,
-    }: CosmosOrchestrationAccountStorageState =
-      await vstorageClient.queryData(accountStoragePath);
+    const { remoteAddress, localAddress } =
+      (await smartWalletKit.readLatestHead(
+        accountStoragePath,
+      )) as CosmosOrchestrationAccountStorageState;
     const { rPortID, rChannelID } = parseRemoteAddress(remoteAddress);
 
     const remoteQueryClient = makeQueryClient(
@@ -217,7 +217,7 @@ const channelCloseInitScenario = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
       relayer,
@@ -244,8 +244,9 @@ const channelCloseInitScenario = test.macro({
       proposal: {},
     });
     const currentWalletRecord = await retryUntilCondition(
-      () => vstorageClient.queryData(`published.wallet.${agoricAddr}.current`),
+      () => smartWalletKit.readPublished(`wallet.${agoricAddr}.current`),
       ({ offerToPublicSubscriberPaths }) =>
+        // @ts-expect-error retryUntilCondition expects boolean return
         Object.fromEntries(offerToPublicSubscriberPaths)[offerId],
       `${offerId} continuing invitation is in vstorage`,
     );
@@ -258,11 +259,10 @@ const channelCloseInitScenario = test.macro({
     const address = accountStoragePath.split('.').pop();
     t.log('Got address:', address);
 
-    const {
-      remoteAddress,
-      localAddress,
-    }: CosmosOrchestrationAccountStorageState =
-      await vstorageClient.queryData(accountStoragePath);
+    const { remoteAddress, localAddress } =
+      (await smartWalletKit.readLatestHead(
+        accountStoragePath,
+      )) as CosmosOrchestrationAccountStorageState;
     const { rPortID, rChannelID, rConnectionID } =
       parseRemoteAddress(remoteAddress);
     const { lPortID, lChannelID, lConnectionID } =
diff --git a/multichain-testing/test/send-anywhere.test.ts b/multichain-testing/test/send-anywhere.test.ts
index df4bbdca8d6..83071908311 100644
--- a/multichain-testing/test/send-anywhere.test.ts
+++ b/multichain-testing/test/send-anywhere.test.ts
@@ -51,7 +51,7 @@ const sendAnywhereScenario = test.macro({
     const {
       wallets,
       provisionSmartWallet,
-      vstorageClient,
+      smartWalletKit,
       retryUntilCondition,
       useChain,
     } = t.context;
@@ -69,9 +69,7 @@ const sendAnywhereScenario = test.macro({
 
     const doOffer = makeDoOffer(wdUser1);
 
-    const brands = await vstorageClient.queryData(
-      'published.agoricNames.brand',
-    );
+    const brands = await smartWalletKit.readPublished('agoricNames.brand');
     const brand = Object.fromEntries(brands)[brandKw];
 
     const apiUrl = await useChain(destChainName).getRestEndpoint();
diff --git a/multichain-testing/test/smart-wallet.test.ts b/multichain-testing/test/smart-wallet.test.ts
index 22faec70baa..016d8c61cba 100644
--- a/multichain-testing/test/smart-wallet.test.ts
+++ b/multichain-testing/test/smart-wallet.test.ts
@@ -17,13 +17,13 @@ test.after(async t => {
 });
 
 test('provision smart wallet', async t => {
-  const { wallets, provisionSmartWallet, vstorageClient, useChain } = t.context;
+  const { wallets, provisionSmartWallet, smartWalletKit, useChain } = t.context;
 
   const wallet = await provisionSmartWallet(wallets.user1, { BLD: 100n });
   t.log('wallet', wallet);
 
-  const walletCurrent = await vstorageClient.queryData(
-    `published.wallet.${wallets.user1}.current`,
+  const walletCurrent = await smartWalletKit.readPublished(
+    `wallet.${wallets.user1}.current`,
   );
   t.like(walletCurrent, { liveOffers: [], offerToPublicSubscriberPaths: [] });
 
diff --git a/multichain-testing/test/stake-ica.test.ts b/multichain-testing/test/stake-ica.test.ts
index c0d118734b7..82fdb942d13 100644
--- a/multichain-testing/test/stake-ica.test.ts
+++ b/multichain-testing/test/stake-ica.test.ts
@@ -43,7 +43,7 @@ const stakeScenario = test.macro(async (t, scenario: StakeIcaScenario) => {
   const {
     wallets,
     provisionSmartWallet,
-    vstorageClient,
+    smartWalletKit,
     retryUntilCondition,
     useChain,
     startContract,
@@ -77,8 +77,8 @@ const stakeScenario = test.macro(async (t, scenario: StakeIcaScenario) => {
   const { offerToPublicSubscriberPaths: makeAccountPublicSubscriberPaths } =
     await retryUntilCondition(
       () =>
-        vstorageClient.queryData(
-          `published.wallet.${wallets[scenario.wallet]}.current`,
+        smartWalletKit.readPublished(
+          `wallet.${wallets[scenario.wallet]}.current`,
         ),
       ({ offerToPublicSubscriberPaths }) =>
         !!offerToPublicSubscriberPaths.length,
@@ -92,6 +92,7 @@ const stakeScenario = test.macro(async (t, scenario: StakeIcaScenario) => {
     .split('.')
     .pop();
   t.log('Got address:', address);
+  assert(address);
   t.regex(
     address,
     new RegExp(`^${scenario.expectedAddressPrefix}1`),
@@ -142,11 +143,12 @@ const stakeScenario = test.macro(async (t, scenario: StakeIcaScenario) => {
     proposal: {},
   });
 
-  const latestWalletUpdate = await vstorageClient.queryData(
-    `published.wallet.${wallets[scenario.wallet]}`,
+  const latestWalletUpdate = await smartWalletKit.readPublished(
+    `wallet.${wallets[scenario.wallet]}`,
   );
   t.log('latest wallet update', latestWalletUpdate);
   t.like(
+    // @ts-expect-error UpdateRecord may not have 'status'
     latestWalletUpdate.status,
     {
       id: delegateOfferId,
diff --git a/multichain-testing/test/support.ts b/multichain-testing/test/support.ts
index a728c3851fd..2dc525991ba 100644
--- a/multichain-testing/test/support.ts
+++ b/multichain-testing/test/support.ts
@@ -119,9 +119,9 @@ export const commonSetup = async (
     contractBuilder: string,
     builderOpts?: Record<string, string | string[]>,
   ) => {
-    const { vstorageClient } = tools;
+    const { smartWalletKit } = tools;
     const instances = Object.fromEntries(
-      await vstorageClient.queryData(`published.agoricNames.instance`),
+      await smartWalletKit.readPublished(`agoricNames.instance`),
     );
     if (contractName in instances) {
       return t.log('Contract found. Skipping installation...');
@@ -129,7 +129,7 @@ export const commonSetup = async (
     t.log('bundle and install contract', contractName);
     await deployBuilder(contractBuilder, builderOpts);
     await retryUntilCondition(
-      () => vstorageClient.queryData(`published.agoricNames.instance`),
+      () => smartWalletKit.readPublished(`agoricNames.instance`),
       res => contractName in Object.fromEntries(res),
       `${contractName} instance is available`,
     );