diff --git a/a3p-integration/proposals/z:acceptance/package.json b/a3p-integration/proposals/z:acceptance/package.json
index 03282e517d3..c9a25480907 100644
--- a/a3p-integration/proposals/z:acceptance/package.json
+++ b/a3p-integration/proposals/z:acceptance/package.json
@@ -21,6 +21,7 @@
     "@endo/far": "^1.1.5",
     "@endo/init": "^1.1.4",
     "@endo/marshal": "^1.5.3",
+    "agoric": "dev",
     "ava": "^6.1.2",
     "execa": "^9.3.1",
     "tsx": "^4.17.0"
diff --git a/a3p-integration/proposals/z:acceptance/psm.test.js b/a3p-integration/proposals/z:acceptance/psm.test.js
index c902bce305e..45dfaac55b7 100644
--- a/a3p-integration/proposals/z:acceptance/psm.test.js
+++ b/a3p-integration/proposals/z:acceptance/psm.test.js
@@ -33,6 +33,7 @@ import {
   initializeNewUser,
   maxMintBelowLimit,
   psmSwap,
+  sendOfferAgd,
 } from './test-lib/psm-lib.js';
 import { getBalances } from './test-lib/utils.js';
 
@@ -128,7 +129,7 @@ test.serial('initialize new user', async t => {
   t.pass();
 });
 
-test.serial('swap into IST', async t => {
+test.serial('swap into IST using agd with default gas', async t => {
   const {
     newUser: { name },
     anchor,
@@ -161,7 +162,7 @@ test.serial('swap into IST', async t => {
       '--feePct',
       wantMintedFeeVal,
     ],
-    psmSwapIo,
+    { ...psmSwapIo, sendOffer: sendOfferAgd },
   );
 
   await checkSwapSucceeded(t, metricsBefore, balancesBefore, {
diff --git a/a3p-integration/proposals/z:acceptance/test-lib/psm-lib.js b/a3p-integration/proposals/z:acceptance/test-lib/psm-lib.js
index b2a157691f5..f97a89c7dd2 100644
--- a/a3p-integration/proposals/z:acceptance/test-lib/psm-lib.js
+++ b/a3p-integration/proposals/z:acceptance/test-lib/psm-lib.js
@@ -1,5 +1,7 @@
 /* eslint-env node */
 
+import { execa } from 'execa';
+import { getNetworkConfig } from 'agoric/src/helpers.js';
 import {
   boardSlottingMarshaller,
   makeFromBoard,
@@ -26,6 +28,22 @@ import fsp from 'node:fs/promises';
 import { NonNullish } from './errors.js';
 import { getBalances } from './utils.js';
 
+/** @import {Result as ExecaResult, ExecaError} from 'execa'; */
+/**
+ * @typedef {ExecaResult & { all: string } & (
+ *     | { failed: false }
+ *     | Pick<
+ *         ExecaError & { failed: true },
+ *         'failed',
+ *         | 'shortMessage'
+ *         | 'cause'
+ *         | 'exitCode'
+ *         | 'signal'
+ *         | 'signalDescription'
+ *       >
+ *   )} SendOfferResult
+ */
+
 // Export these from synthetic-chain?
 const USDC_DENOM = NonNullish(process.env.USDC_DENOM);
 const PSM_PAIR = NonNullish(process.env.PSM_PAIR).replace('.', '-');
@@ -356,27 +374,78 @@ export const initializeNewUser = async (name, fund, io) => {
 };
 
 /**
- * Similar to https://github.com/Agoric/agoric-3-proposals/blob/422b163fecfcf025d53431caebf6d476778b5db3/packages/synthetic-chain/src/lib/commonUpgradeHelpers.ts#L123-L139
- * However, in the case where "address" is not provisioned "agoric wallet send" is needed because
- * "agops perf satisfaction" tries to follow ":published.wallet.${address}" which blocks the execution because no such path exists in
- * vstorage. In situations like this "agoric wallet send" seems a better choice as it doesn't depend on following user's vstorage wallet path
+ * Similar to
+ * https://github.com/Agoric/agoric-3-proposals/blob/422b163fecfcf025d53431caebf6d476778b5db3/packages/synthetic-chain/src/lib/commonUpgradeHelpers.ts#L123-L139
+ * However, for an address that is not provisioned, `agoric wallet send` is
+ * needed because `agops perf satisfaction` hangs when trying to follow
+ * nonexistent vstorage path ":published.wallet.${address}".
  *
  * @param {string} address
  * @param {Promise<string>} offerPromise
+ * @returns {Promise<SendOfferResult>}
  */
 export const sendOfferAgoric = async (address, offerPromise) => {
   const offerPath = await mkTemp('agops.XXX');
   const offer = await offerPromise;
   await fsp.writeFile(offerPath, offer);
 
-  await agoric.wallet(
-    '--keyring-backend=test',
-    'send',
-    '--offer',
-    offerPath,
-    '--from',
-    address,
+  const [settlement] = await Promise.allSettled([
+    execa({
+      all: true,
+    })`agoric wallet --keyring-backend=test send --offer ${offerPath} --from ${address} --verbose`,
+  ]);
+  return settlement.status === 'fulfilled'
+    ? settlement.value
+    : settlement.reason;
+};
+
+/**
+ * A variant of {@link sendOfferAgoric} that uses `agd` directly to e.g.
+ * control gas calculation.
+ *
+ * @param {string} address
+ * @param {Promise<string>} offerPromise
+ * @returns {Promise<SendOfferResult>}
+ */
+export const sendOfferAgd = async (address, offerPromise) => {
+  const offer = await offerPromise;
+  const networkConfig = await getNetworkConfig({ env: process.env, fetch });
+  const { chainName, rpcAddrs } = networkConfig;
+  const args = [].concat(
+    [`--node=${rpcAddrs[0]}`, `--chain-id=${chainName}`],
+    [`--keyring-backend=test`, `--from=${address}`],
+    ['tx', 'swingset', 'wallet-action', '--allow-spend', offer],
+    '--yes',
+    '-bblock',
+    '-ojson',
   );
+
+  const [settlement] = await Promise.allSettled([
+    execa('agd', args, { all: true }),
+  ]);
+
+  // Upon successful exit, verify that the *output* also indicates success.
+  // cf. https://github.com/Agoric/agoric-sdk/blob/master/packages/agoric-cli/src/lib/wallet.js
+  if (settlement.status === 'fulfilled') {
+    const result = settlement.value;
+    try {
+      const tx = JSON.parse(result.stdout);
+      if (tx.code !== 0) {
+        return { ...result, failed: true, shortMessage: `code ${tx.code}` };
+      }
+    } catch (err) {
+      return {
+        ...result,
+        failed: true,
+        shortMessage: 'unexpected output',
+        cause: err,
+      };
+    }
+  }
+
+  return settlement.status === 'fulfilled'
+    ? settlement.value
+    : settlement.reason;
 };
 
 /**
@@ -384,18 +453,47 @@ export const sendOfferAgoric = async (address, offerPromise) => {
  * @param {Array<any>} params
  * @param {{
  *   follow: (...params: string[]) => Promise<object>;
+ *   sendOffer?: (address: string, offerPromise: Promise<string>) => Promise<SendOfferResult>;
  *   setTimeout: typeof global.setTimeout;
  *   now: () => number
  * }} io
  */
 export const psmSwap = async (address, params, io) => {
-  const now = io.now();
-  const offerId = `${address}-psm-swap-${now}`;
+  const { now, sendOffer = sendOfferAgoric, ...waitIO } = io;
+  const offerId = `${address}-psm-swap-${now()}`;
   const newParams = ['psm', ...params, '--offerId', offerId];
   const offerPromise = executeCommand(agopsLocation, newParams);
-  await sendOfferAgoric(address, offerPromise);
+  const sendResult = await sendOffer(address, offerPromise);
+  if (sendResult.failed) {
+    const {
+      command,
+      durationMs,
+      shortMessage,
+      cause,
+      exitCode,
+      signal,
+      signalDescription,
+      all: output,
+    } = sendResult;
+    const summary = {
+      command,
+      durationMs,
+      shortMessage,
+      cause,
+      exitCode,
+      signal,
+      signalDescription,
+      output,
+    };
+    console.error('psmSwap tx send failed', summary);
+    throw Error(
+      `psmSwap tx send failed: ${JSON.stringify({ exitCode, signal, signalDescription })}`,
+      { cause },
+    );
+  }
+  console.log('psmSwap tx send results', sendResult.all);
 
-  await waitUntilOfferResult(address, offerId, true, io, {
+  await waitUntilOfferResult(address, offerId, true, waitIO, {
     errorMessage: `${offerId} not succeeded`,
   });
 };
@@ -427,27 +525,29 @@ const extractBalance = (balances, targetDenom) => {
 
 /**
  * Checking IST balances can be tricky because of the execution fee mentioned in
- * https://github.com/Agoric/agoric-sdk/issues/6525. Here we first check with
- * whatever is passed in. If the first attempt fails we try again to see if
- * there was an execution fee charged. If still fails, we throw.
+ * https://github.com/Agoric/agoric-sdk/issues/6525. So we first check for
+ * equality, but if that fails we recheck against an assumption that a fee of
+ * the default "minFeeDebit" has been charged.
  *
  * @param {import('ava').ExecutionContext} t
  * @param {number} actualBalance
  * @param {number} expectedBalance
  */
 export const tryISTBalances = async (t, actualBalance, expectedBalance) => {
-  const firstTry = await t.try(
-    (tt, actual, expected) => {
-      tt.deepEqual(actual, expected);
-    },
-    actualBalance,
-    expectedBalance,
-  );
+  const firstTry = await t.try(tt => {
+    tt.is(actualBalance, expectedBalance);
+  });
+  if (firstTry.passed) {
+    firstTry.commit();
+    return;
+  }
 
-  if (!firstTry.passed) {
-    firstTry.discard();
-    t.deepEqual(actualBalance + 200000, expectedBalance);
-  } else firstTry.commit();
+  firstTry.discard();
+  t.log('tryISTBalances assuming no batched IST fee', firstTry.errors);
+  // See golang/cosmos/x/swingset/types/default-params.go
+  // and `ChargeBeans` in golang/cosmos/x/swingset/keeper/keeper.go.
+  const minFeeDebit = 200_000;
+  t.is(actualBalance + minFeeDebit, expectedBalance);
 };
 
 /**
diff --git a/a3p-integration/proposals/z:acceptance/yarn.lock b/a3p-integration/proposals/z:acceptance/yarn.lock
index 85e82e2435c..744dce4afda 100644
--- a/a3p-integration/proposals/z:acceptance/yarn.lock
+++ b/a3p-integration/proposals/z:acceptance/yarn.lock
@@ -5,6 +5,16 @@ __metadata:
   version: 8
   cacheKey: 10c0
 
+"@agoric/access-token@portal:../../agoric-sdk/packages/access-token::locator=root-workspace-0b6124%40workspace%3A.":
+  version: 0.0.0-use.local
+  resolution: "@agoric/access-token@portal:../../agoric-sdk/packages/access-token::locator=root-workspace-0b6124%40workspace%3A."
+  dependencies:
+    n-readlines: "npm:^1.0.0"
+    proper-lockfile: "npm:^4.1.2"
+    tmp: "npm:^0.2.1"
+  languageName: node
+  linkType: soft
+
 "@agoric/babel-generator@npm:^7.17.6":
   version: 7.17.6
   resolution: "@agoric/babel-generator@npm:7.17.6"
@@ -30,6 +40,19 @@ __metadata:
   languageName: node
   linkType: soft
 
+"@agoric/cache@portal:../../agoric-sdk/packages/cache::locator=root-workspace-0b6124%40workspace%3A.":
+  version: 0.0.0-use.local
+  resolution: "@agoric/cache@portal:../../agoric-sdk/packages/cache::locator=root-workspace-0b6124%40workspace%3A."
+  dependencies:
+    "@agoric/internal": "npm:^0.3.2"
+    "@agoric/notifier": "npm:^0.6.2"
+    "@agoric/store": "npm:^0.9.2"
+    "@agoric/vat-data": "npm:^0.5.2"
+    "@endo/far": "npm:^1.1.8"
+    "@endo/marshal": "npm:^1.6.1"
+  languageName: node
+  linkType: soft
+
 "@agoric/casting@portal:../../agoric-sdk/packages/casting::locator=root-workspace-0b6124%40workspace%3A.":
   version: 0.0.0-use.local
   resolution: "@agoric/casting@portal:../../agoric-sdk/packages/casting::locator=root-workspace-0b6124%40workspace%3A."
@@ -543,6 +566,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@colors/colors@npm:1.6.0":
+  version: 1.6.0
+  resolution: "@colors/colors@npm:1.6.0"
+  checksum: 10c0/9328a0778a5b0db243af54455b79a69e3fb21122d6c15ef9e9fcc94881d8d17352d8b2b2590f9bdd46fac5c2d6c1636dcfc14358a20c70e22daf89e1a759b629
+  languageName: node
+  linkType: hard
+
 "@confio/ics23@npm:^0.6.8":
   version: 0.6.8
   resolution: "@confio/ics23@npm:0.6.8"
@@ -553,6 +583,38 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@confio/relayer@npm:^0.11.3":
+  version: 0.11.3
+  resolution: "@confio/relayer@npm:0.11.3"
+  dependencies:
+    "@cosmjs/cosmwasm-stargate": "npm:^0.32.1"
+    "@cosmjs/crypto": "npm:^0.32.1"
+    "@cosmjs/encoding": "npm:^0.32.1"
+    "@cosmjs/faucet-client": "npm:^0.32.1"
+    "@cosmjs/math": "npm:^0.32.1"
+    "@cosmjs/proto-signing": "npm:^0.32.1"
+    "@cosmjs/stargate": "npm:^0.32.1"
+    "@cosmjs/stream": "npm:^0.32.1"
+    "@cosmjs/tendermint-rpc": "npm:^0.32.1"
+    "@cosmjs/utils": "npm:^0.32.1"
+    ajv: "npm:7.1.1"
+    axios: "npm:^1.6.7"
+    commander: "npm:7.1.0"
+    cosmjs-types: "npm:^0.9.0"
+    fast-safe-stringify: "npm:2.0.4"
+    js-yaml: "npm:4.0.0"
+    lodash: "npm:4.17.21"
+    prom-client: "npm:13.1.0"
+    table: "npm:^6.7.1"
+    triple-beam: "npm:1.3.0"
+    winston: "npm:3.3.3"
+  bin:
+    ibc-relayer: build/binary/ibc-relayer/index.js
+    ibc-setup: build/binary/ibc-setup/index.js
+  checksum: 10c0/f6519a21a7e2b7d79835558305bbac6f6712b90f0e10f2c156ae74583ca170da0b97ec456272c25a2ffdcbe0343ad425e67886b792f2aed1f5303e34b93edf40
+  languageName: node
+  linkType: hard
+
 "@cosmjs/amino@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/amino@npm:0.32.4"
@@ -565,7 +627,25 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/crypto@npm:^0.32.4":
+"@cosmjs/cosmwasm-stargate@npm:^0.32.1":
+  version: 0.32.4
+  resolution: "@cosmjs/cosmwasm-stargate@npm:0.32.4"
+  dependencies:
+    "@cosmjs/amino": "npm:^0.32.4"
+    "@cosmjs/crypto": "npm:^0.32.4"
+    "@cosmjs/encoding": "npm:^0.32.4"
+    "@cosmjs/math": "npm:^0.32.4"
+    "@cosmjs/proto-signing": "npm:^0.32.4"
+    "@cosmjs/stargate": "npm:^0.32.4"
+    "@cosmjs/tendermint-rpc": "npm:^0.32.4"
+    "@cosmjs/utils": "npm:^0.32.4"
+    cosmjs-types: "npm:^0.9.0"
+    pako: "npm:^2.0.2"
+  checksum: 10c0/f7e285c51ef8b1098a9ea5ca2546a1e226b4fa0a990d95faa6f3b752f3638b6c55f36a56b6f4b11f0a66fd61e3ae8772921d8e99418218df0b2205efe1c82f37
+  languageName: node
+  linkType: hard
+
+"@cosmjs/crypto@npm:^0.32.1, @cosmjs/crypto@npm:^0.32.3, @cosmjs/crypto@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/crypto@npm:0.32.4"
   dependencies:
@@ -580,7 +660,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/encoding@npm:^0.32.3, @cosmjs/encoding@npm:^0.32.4":
+"@cosmjs/encoding@npm:^0.32.1, @cosmjs/encoding@npm:^0.32.3, @cosmjs/encoding@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/encoding@npm:0.32.4"
   dependencies:
@@ -591,6 +671,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@cosmjs/faucet-client@npm:^0.32.1":
+  version: 0.32.4
+  resolution: "@cosmjs/faucet-client@npm:0.32.4"
+  dependencies:
+    axios: "npm:^1.6.0"
+  checksum: 10c0/1651cb370eb5fa2b12b6f94e06d1dc9a6306e34cad3fc87d9263d8b8a225d500449e10a9f6e326534f65261778208dab7fada6a70efb63195589ad08f58e1008
+  languageName: node
+  linkType: hard
+
 "@cosmjs/json-rpc@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/json-rpc@npm:0.32.4"
@@ -601,7 +690,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/math@npm:^0.32.4":
+"@cosmjs/math@npm:^0.32.1, @cosmjs/math@npm:^0.32.3, @cosmjs/math@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/math@npm:0.32.4"
   dependencies:
@@ -610,7 +699,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/proto-signing@npm:^0.32.3, @cosmjs/proto-signing@npm:^0.32.4":
+"@cosmjs/proto-signing@npm:^0.32.1, @cosmjs/proto-signing@npm:^0.32.3, @cosmjs/proto-signing@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/proto-signing@npm:0.32.4"
   dependencies:
@@ -636,7 +725,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/stargate@npm:^0.32.3":
+"@cosmjs/stargate@npm:^0.32.1, @cosmjs/stargate@npm:^0.32.3, @cosmjs/stargate@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/stargate@npm:0.32.4"
   dependencies:
@@ -654,7 +743,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/stream@npm:^0.32.4":
+"@cosmjs/stream@npm:^0.32.1, @cosmjs/stream@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/stream@npm:0.32.4"
   dependencies:
@@ -663,7 +752,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/tendermint-rpc@npm:^0.32.3, @cosmjs/tendermint-rpc@npm:^0.32.4":
+"@cosmjs/tendermint-rpc@npm:^0.32.1, @cosmjs/tendermint-rpc@npm:^0.32.3, @cosmjs/tendermint-rpc@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/tendermint-rpc@npm:0.32.4"
   dependencies:
@@ -681,13 +770,24 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@cosmjs/utils@npm:^0.32.4":
+"@cosmjs/utils@npm:^0.32.1, @cosmjs/utils@npm:^0.32.4":
   version: 0.32.4
   resolution: "@cosmjs/utils@npm:0.32.4"
   checksum: 10c0/d5ff8b235094be1150853a715116049f73eb5cdfeea8ce8e22ecccc61ec99792db457404d4307782b1a2f935dcf438f5c485beabfcfbc1dc5df26eb6e6da9062
   languageName: node
   linkType: hard
 
+"@dabh/diagnostics@npm:^2.0.2":
+  version: 2.0.3
+  resolution: "@dabh/diagnostics@npm:2.0.3"
+  dependencies:
+    colorspace: "npm:1.1.x"
+    enabled: "npm:2.0.x"
+    kuler: "npm:^2.0.0"
+  checksum: 10c0/a5133df8492802465ed01f2f0a5784585241a1030c362d54a602ed1839816d6c93d71dde05cf2ddb4fd0796238c19774406bd62fa2564b637907b495f52425fe
+  languageName: node
+  linkType: hard
+
 "@endo/base64@npm:^1.0.8":
   version: 1.0.8
   resolution: "@endo/base64@npm:1.0.8"
@@ -1161,6 +1261,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@iarna/toml@npm:^2.2.3":
+  version: 2.2.5
+  resolution: "@iarna/toml@npm:2.2.5"
+  checksum: 10c0/d095381ad4554aca233b7cf5a91f243ef619e5e15efd3157bc640feac320545450d14b394aebbf6f02a2047437ced778ae598d5879a995441ab7b6c0b2c2f201
+  languageName: node
+  linkType: hard
+
 "@isaacs/cliui@npm:^8.0.2":
   version: 8.0.2
   resolution: "@isaacs/cliui@npm:8.0.2"
@@ -1518,6 +1625,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/triple-beam@npm:^1.3.2":
+  version: 1.3.5
+  resolution: "@types/triple-beam@npm:1.3.5"
+  checksum: 10c0/d5d7f25da612f6d79266f4f1bb9c1ef8f1684e9f60abab251e1261170631062b656ba26ff22631f2760caeafd372abc41e64867cde27fba54fafb73a35b9056a
+  languageName: node
+  linkType: hard
+
 "@vercel/nft@npm:^0.27.5":
   version: 0.27.5
   resolution: "@vercel/nft@npm:0.27.5"
@@ -1609,6 +1723,93 @@ __metadata:
   languageName: node
   linkType: hard
 
+"agoric@portal:../../agoric-sdk/packages/agoric-cli::locator=root-workspace-0b6124%40workspace%3A.":
+  version: 0.0.0-use.local
+  resolution: "agoric@portal:../../agoric-sdk/packages/agoric-cli::locator=root-workspace-0b6124%40workspace%3A."
+  dependencies:
+    "@agoric/access-token": "npm:^0.4.21"
+    "@agoric/cache": "npm:^0.3.2"
+    "@agoric/casting": "npm:^0.4.2"
+    "@agoric/client-utils": "npm:^0.1.0"
+    "@agoric/cosmic-proto": "npm:^0.4.0"
+    "@agoric/ertp": "npm:^0.16.2"
+    "@agoric/governance": "npm:^0.10.3"
+    "@agoric/inter-protocol": "npm:^0.16.1"
+    "@agoric/internal": "npm:^0.3.2"
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+    ms: "npm:^2.1.1"
+    safe-stable-stringify: "npm:^2.3.1"
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+"require-from-string@npm:^2.0.2":
+  version: 2.0.2
+  resolution: "require-from-string@npm:2.0.2"
+  checksum: 10c0/aaa267e0c5b022fc5fd4eef49d8285086b15f2a1c54b28240fdf03599cbd9c26049fee3eab894f2e1f6ca65e513b030a7c264201e3f005601e80c49fb2937ce2
+  languageName: node
+  linkType: hard
+
 "resolve-cwd@npm:^3.0.0":
   version: 3.0.0
   resolution: "resolve-cwd@npm:3.0.0"
@@ -3976,6 +4681,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"restore-cursor@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "restore-cursor@npm:3.1.0"
+  dependencies:
+    onetime: "npm:^5.1.0"
+    signal-exit: "npm:^3.0.2"
+  checksum: 10c0/8051a371d6aa67ff21625fa94e2357bd81ffdc96267f3fb0fc4aaf4534028343836548ef34c240ffa8c25b280ca35eb36be00b3cb2133fa4f51896d7e73c6b4f
+  languageName: node
+  linkType: hard
+
 "retry@npm:^0.12.0":
   version: 0.12.0
   resolution: "retry@npm:0.12.0"
@@ -4030,6 +4745,7 @@ __metadata:
     "@endo/far": "npm:^1.1.5"
     "@endo/init": "npm:^1.1.4"
     "@endo/marshal": "npm:^1.5.3"
+    agoric: "npm:dev"
     ava: "npm:^6.1.2"
     execa: "npm:^9.3.1"
     tsx: "npm:^4.17.0"
@@ -4037,6 +4753,13 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"run-async@npm:^2.4.0":
+  version: 2.4.1
+  resolution: "run-async@npm:2.4.1"
+  checksum: 10c0/35a68c8f1d9664f6c7c2e153877ca1d6e4f886e5ca067c25cdd895a6891ff3a1466ee07c63d6a9be306e9619ff7d509494e6d9c129516a36b9fd82263d579ee1
+  languageName: node
+  linkType: hard
+
 "run-parallel@npm:^1.1.9":
   version: 1.2.0
   resolution: "run-parallel@npm:1.2.0"
@@ -4046,6 +4769,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"rxjs@npm:^7.5.5":
+  version: 7.8.1
+  resolution: "rxjs@npm:7.8.1"
+  dependencies:
+    tslib: "npm:^2.1.0"
+  checksum: 10c0/3c49c1ecd66170b175c9cacf5cef67f8914dcbc7cd0162855538d365c83fea631167cacb644b3ce533b2ea0e9a4d0b12175186985f89d75abe73dbd8f7f06f68
+  languageName: node
+  linkType: hard
+
 "safe-buffer@npm:^5.0.1, safe-buffer@npm:~5.2.0":
   version: 5.2.1
   resolution: "safe-buffer@npm:5.2.1"
@@ -4053,7 +4785,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"safer-buffer@npm:>= 2.1.2 < 3.0.0":
+"safe-stable-stringify@npm:^2.3.1":
+  version: 2.5.0
+  resolution: "safe-stable-stringify@npm:2.5.0"
+  checksum: 10c0/baea14971858cadd65df23894a40588ed791769db21bafb7fd7608397dbdce9c5aac60748abae9995e0fc37e15f2061980501e012cd48859740796bea2987f49
+  languageName: node
+  linkType: hard
+
+"safer-buffer@npm:>= 2.1.2 < 3, safer-buffer@npm:>= 2.1.2 < 3.0.0":
   version: 2.1.2
   resolution: "safer-buffer@npm:2.1.2"
   checksum: 10c0/7e3c8b2e88a1841c9671094bbaeebd94448111dd90a81a1f606f3f67708a6ec57763b3b47f06da09fc6054193e0e6709e77325415dc8422b04497a8070fa02d4
@@ -4103,6 +4842,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"set-function-length@npm:^1.2.1":
+  version: 1.2.2
+  resolution: "set-function-length@npm:1.2.2"
+  dependencies:
+    define-data-property: "npm:^1.1.4"
+    es-errors: "npm:^1.3.0"
+    function-bind: "npm:^1.1.2"
+    get-intrinsic: "npm:^1.2.4"
+    gopd: "npm:^1.0.1"
+    has-property-descriptors: "npm:^1.0.2"
+  checksum: 10c0/82850e62f412a258b71e123d4ed3873fa9377c216809551192bb6769329340176f109c2eeae8c22a8d386c76739855f78e8716515c818bcaef384b51110f0f3c
+  languageName: node
+  linkType: hard
+
 "shebang-command@npm:^2.0.0":
   version: 2.0.0
   resolution: "shebang-command@npm:2.0.0"
@@ -4119,7 +4872,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"signal-exit@npm:^3.0.0":
+"signal-exit@npm:^3.0.0, signal-exit@npm:^3.0.2":
   version: 3.0.7
   resolution: "signal-exit@npm:3.0.7"
   checksum: 10c0/25d272fa73e146048565e08f3309d5b942c1979a6f4a58a8c59d5fa299728e9c2fcd1a759ec870863b1fd38653670240cd420dad2ad9330c71f36608a6a1c912
@@ -4151,6 +4904,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"simple-swizzle@npm:^0.2.2":
+  version: 0.2.2
+  resolution: "simple-swizzle@npm:0.2.2"
+  dependencies:
+    is-arrayish: "npm:^0.3.1"
+  checksum: 10c0/df5e4662a8c750bdba69af4e8263c5d96fe4cd0f9fe4bdfa3cbdeb45d2e869dff640beaaeb1ef0e99db4d8d2ec92f85508c269f50c972174851bc1ae5bd64308
+  languageName: node
+  linkType: hard
+
 "slash@npm:^5.1.0":
   version: 5.1.0
   resolution: "slash@npm:5.1.0"
@@ -4158,6 +4920,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"slice-ansi@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "slice-ansi@npm:4.0.0"
+  dependencies:
+    ansi-styles: "npm:^4.0.0"
+    astral-regex: "npm:^2.0.0"
+    is-fullwidth-code-point: "npm:^3.0.0"
+  checksum: 10c0/6c25678db1270d4793e0327620f1e0f9f5bea4630123f51e9e399191bc52c87d6e6de53ed33538609e5eacbd1fab769fae00f3705d08d029f02102a540648918
+  languageName: node
+  linkType: hard
+
 "slice-ansi@npm:^5.0.0":
   version: 5.0.0
   resolution: "slice-ansi@npm:5.0.0"
@@ -4240,6 +5013,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"stack-trace@npm:0.0.x":
+  version: 0.0.10
+  resolution: "stack-trace@npm:0.0.10"
+  checksum: 10c0/9ff3dabfad4049b635a85456f927a075c9d0c210e3ea336412d18220b2a86cbb9b13ec46d6c37b70a302a4ea4d49e30e5d4944dd60ae784073f1cde778ac8f4b
+  languageName: node
+  linkType: hard
+
 "stack-utils@npm:^2.0.6":
   version: 2.0.6
   resolution: "stack-utils@npm:2.0.6"
@@ -4335,6 +5115,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"supports-color@npm:^7.1.0":
+  version: 7.2.0
+  resolution: "supports-color@npm:7.2.0"
+  dependencies:
+    has-flag: "npm:^4.0.0"
+  checksum: 10c0/afb4c88521b8b136b5f5f95160c98dee7243dc79d5432db7efc27efb219385bbc7d9427398e43dd6cc730a0f87d5085ce1652af7efbe391327bc0a7d0f7fc124
+  languageName: node
+  linkType: hard
+
 "supports-preserve-symlinks-flag@npm:^1.0.0":
   version: 1.0.0
   resolution: "supports-preserve-symlinks-flag@npm:1.0.0"
@@ -4349,6 +5138,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"table@npm:^6.7.1":
+  version: 6.8.2
+  resolution: "table@npm:6.8.2"
+  dependencies:
+    ajv: "npm:^8.0.1"
+    lodash.truncate: "npm:^4.4.2"
+    slice-ansi: "npm:^4.0.0"
+    string-width: "npm:^4.2.3"
+    strip-ansi: "npm:^6.0.1"
+  checksum: 10c0/f8b348af38ee34e419d8ce7306ba00671ce6f20e861ccff22555f491ba264e8416086063ce278a8d81abfa8d23b736ec2cca7ac4029b5472f63daa4b4688b803
+  languageName: node
+  linkType: hard
+
 "tar-fs@npm:^2.0.0":
   version: 2.1.1
   resolution: "tar-fs@npm:2.1.1"
@@ -4388,6 +5190,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"tdigest@npm:^0.1.1":
+  version: 0.1.2
+  resolution: "tdigest@npm:0.1.2"
+  dependencies:
+    bintrees: "npm:1.0.2"
+  checksum: 10c0/10187b8144b112fcdfd3a5e4e9068efa42c990b1e30cd0d4f35ee8f58f16d1b41bc587e668fa7a6f6ca31308961cbd06cd5d4a4ae1dc388335902ae04f7d57df
+  languageName: node
+  linkType: hard
+
 "temp-dir@npm:^3.0.0":
   version: 3.0.0
   resolution: "temp-dir@npm:3.0.0"
@@ -4395,6 +5206,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"text-hex@npm:1.0.x":
+  version: 1.0.0
+  resolution: "text-hex@npm:1.0.0"
+  checksum: 10c0/57d8d320d92c79d7c03ffb8339b825bb9637c2cbccf14304309f51d8950015c44464b6fd1b6820a3d4821241c68825634f09f5a2d9d501e84f7c6fd14376860d
+  languageName: node
+  linkType: hard
+
+"through@npm:^2.3.6":
+  version: 2.3.8
+  resolution: "through@npm:2.3.8"
+  checksum: 10c0/4b09f3774099de0d4df26d95c5821a62faee32c7e96fb1f4ebd54a2d7c11c57fe88b0a0d49cf375de5fee5ae6bf4eb56dbbf29d07366864e2ee805349970d3cc
+  languageName: node
+  linkType: hard
+
 "time-zone@npm:^1.0.0":
   version: 1.0.0
   resolution: "time-zone@npm:1.0.0"
@@ -4402,6 +5227,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"tmp@npm:^0.0.33":
+  version: 0.0.33
+  resolution: "tmp@npm:0.0.33"
+  dependencies:
+    os-tmpdir: "npm:~1.0.2"
+  checksum: 10c0/69863947b8c29cabad43fe0ce65cec5bb4b481d15d4b4b21e036b060b3edbf3bc7a5541de1bacb437bb3f7c4538f669752627fdf9b4aaf034cebd172ba373408
+  languageName: node
+  linkType: hard
+
 "tmp@npm:^0.2.1":
   version: 0.2.3
   resolution: "tmp@npm:0.2.3"
@@ -4425,6 +5259,27 @@ __metadata:
   languageName: node
   linkType: hard
 
+"triple-beam@npm:1.3.0":
+  version: 1.3.0
+  resolution: "triple-beam@npm:1.3.0"
+  checksum: 10c0/a6da96495f25b6c04b3629df5161c7eb84760927943f16665fd8dcd3a643daadf73d69eee78306b4b68d606937f22f8703afe763bc8d3723632ffb1f3a798493
+  languageName: node
+  linkType: hard
+
+"triple-beam@npm:^1.3.0":
+  version: 1.4.1
+  resolution: "triple-beam@npm:1.4.1"
+  checksum: 10c0/4bf1db71e14fe3ff1c3adbe3c302f1fdb553b74d7591a37323a7badb32dc8e9c290738996cbb64f8b10dc5a3833645b5d8c26221aaaaa12e50d1251c9aba2fea
+  languageName: node
+  linkType: hard
+
+"tslib@npm:^2.1.0":
+  version: 2.8.1
+  resolution: "tslib@npm:2.8.1"
+  checksum: 10c0/9c4759110a19c53f992d9aae23aac5ced636e99887b51b9e61def52611732872ff7668757d4e4c61f19691e36f4da981cd9485e869b4a7408d689f6bf1f14e62
+  languageName: node
+  linkType: hard
+
 "tsx@npm:^4.17.0":
   version: 4.19.2
   resolution: "tsx@npm:4.19.2"
@@ -4457,6 +5312,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"type-fest@npm:^0.21.3":
+  version: 0.21.3
+  resolution: "type-fest@npm:0.21.3"
+  checksum: 10c0/902bd57bfa30d51d4779b641c2bc403cdf1371fb9c91d3c058b0133694fcfdb817aef07a47f40faf79039eecbaa39ee9d3c532deff244f3a19ce68cea71a61e8
+  languageName: node
+  linkType: hard
+
 "typescript@npm:^5.5.4":
   version: 5.6.3
   resolution: "typescript@npm:5.6.3"
@@ -4516,6 +5378,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"uri-js@npm:^4.2.2":
+  version: 4.4.1
+  resolution: "uri-js@npm:4.4.1"
+  dependencies:
+    punycode: "npm:^2.1.0"
+  checksum: 10c0/4ef57b45aa820d7ac6496e9208559986c665e49447cb072744c13b66925a362d96dd5a46c4530a6b8e203e5db5fe849369444440cb22ecfc26c679359e5dfa3c
+  languageName: node
+  linkType: hard
+
 "util-deprecate@npm:^1.0.1":
   version: 1.0.2
   resolution: "util-deprecate@npm:1.0.2"
@@ -4523,6 +5394,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"wcwidth@npm:^1.0.1":
+  version: 1.0.1
+  resolution: "wcwidth@npm:1.0.1"
+  dependencies:
+    defaults: "npm:^1.0.3"
+  checksum: 10c0/5b61ca583a95e2dd85d7078400190efd452e05751a64accb8c06ce4db65d7e0b0cde9917d705e826a2e05cc2548f61efde115ffa374c3e436d04be45c889e5b4
+  languageName: node
+  linkType: hard
+
 "webidl-conversions@npm:^3.0.0":
   version: 3.0.1
   resolution: "webidl-conversions@npm:3.0.1"
@@ -4578,6 +5458,34 @@ __metadata:
   languageName: node
   linkType: hard
 
+"winston-transport@npm:^4.4.0":
+  version: 4.9.0
+  resolution: "winston-transport@npm:4.9.0"
+  dependencies:
+    logform: "npm:^2.7.0"
+    readable-stream: "npm:^3.6.2"
+    triple-beam: "npm:^1.3.0"
+  checksum: 10c0/e2990a172e754dbf27e7823772214a22dc8312f7ec9cfba831e5ef30a5d5528792e5ea8f083c7387ccfc5b2af20e3691f64738546c8869086110a26f98671095
+  languageName: node
+  linkType: hard
+
+"winston@npm:3.3.3":
+  version: 3.3.3
+  resolution: "winston@npm:3.3.3"
+  dependencies:
+    "@dabh/diagnostics": "npm:^2.0.2"
+    async: "npm:^3.1.0"
+    is-stream: "npm:^2.0.0"
+    logform: "npm:^2.2.0"
+    one-time: "npm:^1.0.0"
+    readable-stream: "npm:^3.4.0"
+    stack-trace: "npm:0.0.x"
+    triple-beam: "npm:^1.3.0"
+    winston-transport: "npm:^4.4.0"
+  checksum: 10c0/18205fa1e3ebb88dc910fbe5337e3c9d2dbd94310978adca5ab77444b854d5679dec0a70fed425e77cf93e237390c7670bb937f14c492b8415e594ab21540d3d
+  languageName: node
+  linkType: hard
+
 "wrap-ansi-cjs@npm:wrap-ansi@^7.0.0, wrap-ansi@npm:^7.0.0":
   version: 7.0.0
   resolution: "wrap-ansi@npm:7.0.0"
@@ -4589,6 +5497,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"wrap-ansi@npm:^6.0.1":
+  version: 6.2.0
+  resolution: "wrap-ansi@npm:6.2.0"
+  dependencies:
+    ansi-styles: "npm:^4.0.0"
+    string-width: "npm:^4.1.0"
+    strip-ansi: "npm:^6.0.0"
+  checksum: 10c0/baad244e6e33335ea24e86e51868fe6823626e3a3c88d9a6674642afff1d34d9a154c917e74af8d845fd25d170c4ea9cf69a47133c3f3656e1252b3d462d9f6c
+  languageName: node
+  linkType: hard
+
 "wrap-ansi@npm:^8.1.0":
   version: 8.1.0
   resolution: "wrap-ansi@npm:8.1.0"
@@ -4617,7 +5536,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ws@npm:^7":
+"ws@npm:^7, ws@npm:^7.2.0":
   version: 7.5.10
   resolution: "ws@npm:7.5.10"
   peerDependencies:
diff --git a/packages/agoric-cli/src/commands/wallet.js b/packages/agoric-cli/src/commands/wallet.js
index d6cac6fb2ee..440fe2452d5 100644
--- a/packages/agoric-cli/src/commands/wallet.js
+++ b/packages/agoric-cli/src/commands/wallet.js
@@ -21,7 +21,11 @@ import {
 } from '../lib/chain.js';
 import { getNetworkConfig } from '../lib/network-config.js';
 import { coalesceWalletState, getCurrent } from '../lib/wallet.js';
-import { summarize, fmtRecordOfLines } from '../lib/format.js';
+import {
+  summarize,
+  fmtRecordOfLines,
+  parseFiniteNumber,
+} from '../lib/format.js';
 
 const networkConfig = await getNetworkConfig({ env: process.env, fetch });
 
@@ -135,23 +139,60 @@ export const makeWalletCommand = async command => {
     )
     .requiredOption('--offer [filename]', 'path to file with prepared offer')
     .option('--dry-run', 'spit out the command instead of running it')
+    .option('--gas', 'gas limit; "auto" [default] to calculate automatically')
+    .option(
+      '--gas-adjustment',
+      'factor by which to multiply the --gas=auto calculation result [default 1.2]',
+    )
+    .option('--verbose', 'print command output')
     .action(function (opts) {
-      /** @typedef {{ from: string, offer: string, dryRun: boolean }} Opts */
+      /**
+       * @typedef {{
+       *   from: string,
+       *   offer: string,
+       *   dryRun: boolean,
+       *   gas: string,
+       *   gasAdjustment: string,
+       *   verbose: boolean,
+       * }} Opts
+       */
       const {
         dryRun,
         from,
+        gas = 'auto',
+        gasAdjustment = '1.2',
         offer,
         home,
+        verbose,
         keyringBackend: backend,
       } = /** @type {SharedTxOptions & Opts} */ ({ ...wallet.opts(), ...opts });
 
       const offerBody = fs.readFileSync(offer).toString();
-      execSwingsetTransaction(['wallet-action', '--allow-spend', offerBody], {
-        from,
-        dryRun,
-        keyring: { home, backend },
-        ...networkConfig,
-      });
+      const out = execSwingsetTransaction(
+        ['wallet-action', '--allow-spend', offerBody, '-ojson', '-bblock'],
+        {
+          ...networkConfig,
+          keyring: { home, backend },
+          from,
+          gas:
+            gas === 'auto' ? ['auto', parseFiniteNumber(gasAdjustment)] : gas,
+          dryRun,
+          verbose,
+        },
+      );
+
+      // see sendAction in {@link ../lib/wallet.js}
+      if (dryRun || !verbose) return;
+      try {
+        const tx = JSON.parse(/** @type {string} */ (out));
+        if (tx.code !== 0) {
+          console.error('failed to send tx', tx);
+        }
+        console.log(tx);
+      } catch (err) {
+        console.error('unexpected output', JSON.stringify(out));
+        throw err;
+      }
     });
 
   wallet
diff --git a/packages/agoric-cli/src/helpers.js b/packages/agoric-cli/src/helpers.js
index 51c3443806e..845da5536ae 100644
--- a/packages/agoric-cli/src/helpers.js
+++ b/packages/agoric-cli/src/helpers.js
@@ -3,6 +3,8 @@
 
 /** @import { ChildProcess } from 'child_process' */
 
+export { getNetworkConfig } from './lib/network-config.js';
+
 export const getSDKBinaries = ({
   jsPfx = '../..',
   goPfx = `${jsPfx}/../golang`,
diff --git a/packages/agoric-cli/src/lib/chain.js b/packages/agoric-cli/src/lib/chain.js
index ac8ecd8b0af..3a47c5a7f49 100644
--- a/packages/agoric-cli/src/lib/chain.js
+++ b/packages/agoric-cli/src/lib/chain.js
@@ -38,11 +38,42 @@ export const normalizeAddressWithOptions = (
 };
 harden(normalizeAddressWithOptions);
 
+/** @typedef {number | 'auto' | ['auto', adjustment?: number | undefined]} GasLimit */
+
+/**
+ * @param {GasLimit} limit
+ * @returns {string[]}
+ */
+const makeGasOpts = limit => {
+  if (Number.isFinite(limit) || limit === 'auto') {
+    return [`--gas=${limit}`];
+  }
+  if (Array.isArray(limit) && limit.length >= 1 && limit[0] === 'auto') {
+    const gasOpts = ['--gas=auto'];
+    if (limit.length > 1) {
+      const [adjustment, ...rest] = limit.slice(1);
+      const adjustmentIsValid =
+        adjustment === undefined ||
+        (Number.isFinite(adjustment) && Number(adjustment) > 0);
+      if (rest.length !== 0 || !adjustmentIsValid) {
+        throw Error('invalid gas input');
+      }
+      if (adjustment !== undefined) {
+        gasOpts.push(`--gas-adjustment=${adjustment}`);
+      }
+    }
+    return gasOpts;
+  }
+
+  throw Error('invalid gas input');
+};
+
 /**
  * @param {ReadonlyArray<string>} swingsetArgs
  * @param {MinimalNetworkConfig & {
  *   from: string,
  *   fees?: string,
+ *   gas?: GasLimit,
  *   dryRun?: boolean,
  *   verbose?: boolean,
  *   keyring?: {home?: string, backend: string}
@@ -54,6 +85,7 @@ export const execSwingsetTransaction = (swingsetArgs, opts) => {
   const {
     from,
     fees,
+    gas = ['auto', 1.2],
     dryRun = false,
     verbose = true,
     keyring = undefined,
@@ -71,6 +103,7 @@ export const execSwingsetTransaction = (swingsetArgs, opts) => {
     homeOpt,
     backendOpt,
     feeOpt,
+    makeGasOpts(gas),
     [`--from=${from}`, 'tx', 'swingset'],
     swingsetArgs,
   );
@@ -82,7 +115,7 @@ export const execSwingsetTransaction = (swingsetArgs, opts) => {
     stdout.write('\n');
   } else {
     const yesCmd = cmd.concat(['--yes']);
-    if (verbose) console.log('Executing ', yesCmd);
+    if (verbose) console.log('Executing ', agdBinary, yesCmd);
     const out = execFileSync(agdBinary, yesCmd, { encoding: 'utf-8' });
 
     // agd puts this diagnostic on stdout rather than stderr :-/
diff --git a/packages/agoric-cli/src/lib/format.js b/packages/agoric-cli/src/lib/format.js
index 16ebe45308b..e5e1a277d3c 100644
--- a/packages/agoric-cli/src/lib/format.js
+++ b/packages/agoric-cli/src/lib/format.js
@@ -6,6 +6,18 @@ import { makeBoardRemote } from '@agoric/vats/tools/board-utils.js';
  * @import {AgoricNamesRemotes, BoardRemote, VBankAssetDetail} from '@agoric/vats/tools/board-utils.js';
  */
 
+// TODO Move to packages/internal.
+/**
+ * Parses the input and returns either a finite number or NaN.
+ *
+ * @param {string} input
+ * @returns {number}
+ */
+export const parseFiniteNumber = input => {
+  const result = /[0-9]/.test(input || '') ? Number(input) : NaN;
+  return Number.isFinite(result) ? result : NaN;
+};
+
 /**
  * JSON.stringify replacer to handle bigint
  *
diff --git a/packages/agoric-cli/test/inter-cli.test.js b/packages/agoric-cli/test/inter-cli.test.js
index 38e3b970feb..386f9b6e825 100644
--- a/packages/agoric-cli/test/inter-cli.test.js
+++ b/packages/agoric-cli/test/inter-cli.test.js
@@ -599,7 +599,7 @@ test('README ex1: inter bid place by-price: printed offer is correct', async t =
   const expected = [
     'Run this interactive command in shell:\n\n',
     'agd ',
-    '--node=http://0.0.0.0:26657 --chain-id=agoriclocal --from=agoric18jr9nlvp300feu726y3v4n07ykfjwup3twnlyn tx swingset wallet-action --allow-spend {"body":"#{\\"method\\":\\"executeOffer\\",\\"offer\\":{\\"id\\":\\"bid-1680241587424\\",\\"invitationSpec\\":{\\"callPipe\\":[[\\"makeBidInvitation\\",[\\"$0.Alleged: BoardRemoteBrand\\"]]],\\"instancePath\\":[\\"auctioneer\\"],\\"source\\":\\"agoricContract\\"},\\"offerArgs\\":{\\"maxBuy\\":{\\"brand\\":\\"$0\\",\\"value\\":\\"+1000000000000\\"},\\"offerPrice\\":{\\"denominator\\":{\\"brand\\":\\"$0\\",\\"value\\":\\"+100\\"},\\"numerator\\":{\\"brand\\":\\"$1.Alleged: BoardRemoteBrand\\",\\"value\\":\\"+855\\"}}},\\"proposal\\":{\\"give\\":{\\"Bid\\":{\\"brand\\":\\"$1\\",\\"value\\":\\"+85000000\\"}}}}}","slots":["board03446","board0566"]} --output json',
+    '--node=http://0.0.0.0:26657 --chain-id=agoriclocal --gas=auto --gas-adjustment=1.2 --from=agoric18jr9nlvp300feu726y3v4n07ykfjwup3twnlyn tx swingset wallet-action --allow-spend {"body":"#{\\"method\\":\\"executeOffer\\",\\"offer\\":{\\"id\\":\\"bid-1680241587424\\",\\"invitationSpec\\":{\\"callPipe\\":[[\\"makeBidInvitation\\",[\\"$0.Alleged: BoardRemoteBrand\\"]]],\\"instancePath\\":[\\"auctioneer\\"],\\"source\\":\\"agoricContract\\"},\\"offerArgs\\":{\\"maxBuy\\":{\\"brand\\":\\"$0\\",\\"value\\":\\"+1000000000000\\"},\\"offerPrice\\":{\\"denominator\\":{\\"brand\\":\\"$0\\",\\"value\\":\\"+100\\"},\\"numerator\\":{\\"brand\\":\\"$1.Alleged: BoardRemoteBrand\\",\\"value\\":\\"+855\\"}}},\\"proposal\\":{\\"give\\":{\\"Bid\\":{\\"brand\\":\\"$1\\",\\"value\\":\\"+85000000\\"}}}}}","slots":["board03446","board0566"]} --output json',
   ].join('');
   t.deepEqual(txt, expected);
 });
diff --git a/packages/client-utils/src/sync-tools.js b/packages/client-utils/src/sync-tools.js
index a2aa6db98d8..bf67c2e4abf 100644
--- a/packages/client-utils/src/sync-tools.js
+++ b/packages/client-utils/src/sync-tools.js
@@ -16,6 +16,7 @@
  * @typedef {object} RetryOptions
  * @property {number} [maxRetries]
  * @property {number} [retryIntervalMs]
+ * @property {boolean} [reusePromise]
  *
  * @typedef {RetryOptions & {errorMessage: string}} WaitUntilOptions
  *
@@ -48,19 +49,51 @@ export const retryUntilCondition = async (
   operation,
   condition,
   message,
-  { maxRetries = 6, retryIntervalMs = 3500, log = console.log, setTimeout },
+  {
+    maxRetries = 6,
+    retryIntervalMs = 3500,
+    reusePromise = false,
+    // XXX mixes ocaps with configuration options
+    log = console.log,
+    setTimeout,
+  },
 ) => {
-  console.log({ maxRetries, retryIntervalMs, message });
-  let retries = 0;
+  console.log({ maxRetries, retryIntervalMs, reusePromise, message });
 
   await null; // separate sync prologue
 
+  const timedOut = Symbol('timed out');
+  let retries = 0;
+  /** @type {Promise | undefined } */
+  let resultP;
   while (retries < maxRetries) {
     try {
-      const result = await operation();
-      log('RESULT', result);
-      if (condition(result)) {
-        return result;
+      if (!reusePromise || !resultP) {
+        resultP = operation();
+        const makeCleanup = ref => {
+          const cleanup = () => {
+            if (resultP === ref) {
+              resultP = undefined;
+            }
+          };
+          return cleanup;
+        };
+        // eslint-disable-next-line @typescript-eslint/no-floating-promises
+        resultP.finally(makeCleanup(resultP));
+      }
+      const result = await Promise.race([
+        resultP,
+        // Overload the retryIntervalMs to apply both *to* and *between* iterations
+        sleep(retryIntervalMs, { log() {}, setTimeout }).then(() => timedOut),
+      ]);
+      if (result === timedOut) {
+        log(`Attempt ${retries + 1} timed out`);
+        if (!reusePromise) resultP = undefined;
+      } else {
+        log('RESULT', result);
+        if (condition(result)) {
+          return result;
+        }
       }
     } catch (error) {
       if (error instanceof Error) {
@@ -82,13 +115,14 @@ export const retryUntilCondition = async (
 
 /**
  * @param {WaitUntilOptions} options
+ * @returns {WaitUntilOptions & {log?: typeof console.log}}
  */
 const overrideDefaultOptions = options => {
   const defaultValues = {
     maxRetries: 6,
     retryIntervalMs: 3500,
-    log: console.log,
     errorMessage: 'Error',
+    log: console.log,
   };
 
   return { ...defaultValues, ...options };
@@ -118,14 +152,13 @@ export const waitUntilContractDeployed = (
 ) => {
   const { follow, setTimeout } = ambientAuthority;
   const getInstances = makeGetInstances(follow);
-  const { maxRetries, retryIntervalMs, errorMessage, log } =
-    overrideDefaultOptions(options);
+  const { errorMessage, ...resolvedOptions } = overrideDefaultOptions(options);
 
   return retryUntilCondition(
     getInstances,
     instanceObject => Object.keys(instanceObject).includes(contractName),
     errorMessage,
-    { maxRetries, retryIntervalMs, log, setTimeout },
+    { setTimeout, ...resolvedOptions },
   );
 };
 
@@ -156,14 +189,13 @@ const checkCosmosBalance = (balances, threshold) => {
 export const waitUntilAccountFunded = (destAcct, io, threshold, options) => {
   const { query, setTimeout } = io;
   const queryCosmosBalance = makeQueryCosmosBalance(query);
-  const { maxRetries, retryIntervalMs, errorMessage, log } =
-    overrideDefaultOptions(options);
+  const { errorMessage, ...resolvedOptions } = overrideDefaultOptions(options);
 
   return retryUntilCondition(
     async () => queryCosmosBalance(destAcct),
     balances => checkCosmosBalance(balances, threshold),
     errorMessage,
-    { maxRetries, retryIntervalMs, log, setTimeout },
+    { setTimeout, ...resolvedOptions },
   );
 };
 
@@ -211,14 +243,13 @@ export const waitUntilOfferResult = (
 ) => {
   const { follow, setTimeout } = io;
   const queryWallet = makeQueryWallet(follow);
-  const { maxRetries, retryIntervalMs, errorMessage, log } =
-    overrideDefaultOptions(options);
+  const { errorMessage, ...resolvedOptions } = overrideDefaultOptions(options);
 
   return retryUntilCondition(
     async () => queryWallet(addr),
     status => checkOfferState(status, waitForPayouts, offerId),
     errorMessage,
-    { maxRetries, retryIntervalMs, log, setTimeout },
+    { reusePromise: true, setTimeout, ...resolvedOptions },
   );
 };
 
@@ -247,13 +278,12 @@ const checkForInvitation = update => {
 export const waitUntilInvitationReceived = (addr, io, options) => {
   const { follow, setTimeout } = io;
   const queryWallet = makeQueryWallet(follow);
-  const { maxRetries, retryIntervalMs, errorMessage, log } =
-    overrideDefaultOptions(options);
+  const { errorMessage, ...resolvedOptions } = overrideDefaultOptions(options);
 
   return retryUntilCondition(
     async () => queryWallet(addr),
     checkForInvitation,
     errorMessage,
-    { maxRetries, retryIntervalMs, log, setTimeout },
+    { reusePromise: true, setTimeout, ...resolvedOptions },
   );
 };
diff --git a/packages/internal/test/snapshots/exports.test.js.snap b/packages/internal/test/snapshots/exports.test.js.snap
index a4732587e9f..1f14b724a85 100644
Binary files a/packages/internal/test/snapshots/exports.test.js.snap and b/packages/internal/test/snapshots/exports.test.js.snap differ