diff --git a/packages/fast-usdc/src/cli/bridge-action.js b/packages/fast-usdc/src/cli/bridge-action.js
index 582028f23bf..45a53351b8c 100644
--- a/packages/fast-usdc/src/cli/bridge-action.js
+++ b/packages/fast-usdc/src/cli/bridge-action.js
@@ -4,13 +4,16 @@ import { boardSlottingMarshaller } from '@agoric/client-utils';
  * @import {BridgeAction} from '@agoric/smart-wallet/src/smartWallet.js';
  */
 
-const marshaller = boardSlottingMarshaller();
+const defaultMarshaller = boardSlottingMarshaller();
+
+/** @typedef {ReturnType<boardSlottingMarshaller>} BoardSlottingMarshaller */
 
 /**
  * @param {BridgeAction} bridgeAction
  * @param {Pick<import('stream').Writable,'write'>} stdout
+ * @param {BoardSlottingMarshaller} marshaller
  */
-const outputAction = (bridgeAction, stdout) => {
+const outputAction = (bridgeAction, stdout, marshaller) => {
   const capData = marshaller.toCapData(harden(bridgeAction));
   stdout.write(JSON.stringify(capData));
   stdout.write('\n');
@@ -25,8 +28,13 @@ export const sendHint =
  *   stdout: Pick<import('stream').Writable,'write'>,
  *   stderr: Pick<import('stream').Writable,'write'>,
  * }} io
+ * @param {BoardSlottingMarshaller | undefined} marshaller
  */
-export const outputActionAndHint = (bridgeAction, { stdout, stderr }) => {
-  outputAction(bridgeAction, stdout);
+export const outputActionAndHint = (
+  bridgeAction,
+  { stdout, stderr },
+  marshaller = defaultMarshaller,
+) => {
+  outputAction(bridgeAction, stdout, marshaller);
   stderr.write(sendHint);
 };
diff --git a/packages/fast-usdc/src/cli/cli.js b/packages/fast-usdc/src/cli/cli.js
index 9488bf574c2..8676ef955e2 100644
--- a/packages/fast-usdc/src/cli/cli.js
+++ b/packages/fast-usdc/src/cli/cli.js
@@ -1,11 +1,6 @@
 /* eslint-env node */
 /* global globalThis */
-import { assertParsableNumber } from '@agoric/zoe/src/contractSupport/ratio.js';
-import {
-  Command,
-  InvalidArgumentError,
-  InvalidOptionArgumentError,
-} from 'commander';
+import { Command } from 'commander';
 import { existsSync, mkdirSync, readFileSync } from 'fs';
 import { fileURLToPath } from 'url';
 import { dirname, resolve } from 'path';
@@ -19,6 +14,7 @@ import { addOperatorCommands } from './operator-commands.js';
 import * as configLib from './config.js';
 import transferLib from './transfer.js';
 import { makeFile } from '../util/file.js';
+import { addLPCommands } from './lp-commands.js';
 
 const packageJson = JSON.parse(
   readFileSync(
@@ -83,51 +79,7 @@ export const initProgram = (
     env,
     now,
   });
-
-  /** @param {string} value */
-  const parseDecimal = value => {
-    try {
-      assertParsableNumber(value);
-    } catch {
-      throw new InvalidArgumentError('Not a decimal number.');
-    }
-    return value;
-  };
-
-  /**
-   * @param {string} str
-   * @returns {'auto' | number}
-   */
-  const parseFee = str => {
-    if (str === 'auto') return 'auto';
-    const num = parseFloat(str);
-    if (Number.isNaN(num)) {
-      throw new InvalidOptionArgumentError('Fee must be a number.');
-    }
-    return num;
-  };
-
-  program
-    .command('deposit')
-    .description('Offer assets to the liquidity pool')
-    .argument('<give>', 'USDC to give', parseDecimal)
-    .option('--id [offer-id]', 'Offer ID')
-    .option('--fee [fee]', 'Cosmos fee', parseFee)
-    .action(() => {
-      console.error('TODO actually send deposit');
-      // TODO: Implement deposit logic
-    });
-
-  program
-    .command('withdraw')
-    .description('Withdraw assets from the liquidity pool')
-    .argument('<want>', 'USDC to withdraw', parseDecimal)
-    .option('--id [offer-id]', 'Offer ID')
-    .option('--fee [fee]', 'Cosmos fee', parseFee)
-    .action(() => {
-      console.error('TODO actually send withdrawal');
-      // TODO: Implement withdraw logic
-    });
+  addLPCommands(program, { fetch, stdout, stderr, env, now });
 
   program
     .command('transfer')
diff --git a/packages/fast-usdc/src/cli/lp-commands.js b/packages/fast-usdc/src/cli/lp-commands.js
new file mode 100644
index 00000000000..4947d02d7ac
--- /dev/null
+++ b/packages/fast-usdc/src/cli/lp-commands.js
@@ -0,0 +1,135 @@
+/**
+ * @import {Command} from 'commander';
+ * @import {OfferSpec} from '@agoric/smart-wallet/src/offers.js';
+ * @import {ExecuteOfferAction} from '@agoric/smart-wallet/src/smartWallet.js';
+ */
+
+import { fetchEnvNetworkConfig, makeVstorageKit } from '@agoric/client-utils';
+import { Nat } from '@endo/nat';
+import { InvalidArgumentError } from 'commander';
+import { outputActionAndHint } from './bridge-action.js';
+
+/** @param {string} arg */
+const parseNat = arg => {
+  try {
+    const n = Nat(BigInt(arg));
+    return n;
+  } catch {
+    throw new InvalidArgumentError('Not a number');
+  }
+};
+
+/**
+ * @param {Command} program
+ * @param {{
+ *   fetch?: Window['fetch'];
+ *   vstorageKit?: Awaited<ReturnType<typeof makeVstorageKit>>;
+ *   stdout: typeof process.stdout;
+ *   stderr: typeof process.stderr;
+ *   env: typeof process.env;
+ *   now: typeof Date.now;
+ * }} io
+ */
+export const addLPCommands = (
+  program,
+  { fetch, vstorageKit, stderr, stdout, env, now },
+) => {
+  const operator = program
+    .command('lp')
+    .description('Liquidity Provider commands');
+
+  const loadVsk = async () => {
+    if (vstorageKit) {
+      return vstorageKit;
+    }
+    assert(fetch);
+    const networkConfig = await fetchEnvNetworkConfig({ env, fetch });
+    return makeVstorageKit({ fetch }, networkConfig);
+  };
+  /** @type {undefined | ReturnType<typeof loadVsk>} */
+  let vskP;
+
+  operator
+    .command('deposit')
+    .description('Deposit USDC into pool')
+    .addHelpText(
+      'after',
+      '\nPipe the STDOUT to a file such as deposit.json, then use the Agoric CLI to broadcast it:\n  agoric wallet send --offer accept.json --from gov1 --keyring-backend="test"',
+    )
+    .requiredOption('--amount <number>', 'uUSDC amount', parseNat)
+    .option('--offerId <string>', 'Offer id', String, `lpDeposit-${now()}`)
+    .action(async opts => {
+      vskP ||= loadVsk();
+      const vsk = await vskP;
+
+      /** @type {Brand<'nat'>} */
+      // @ts-expect-error it doesnt recognize usdc as a Brand type
+      const usdc = vsk.agoricNames.brand.USDC;
+      assert(usdc, 'USDC brand not in agoricNames');
+
+      /** @type {OfferSpec} */
+      const offer = {
+        id: opts.offerId,
+        invitationSpec: {
+          source: 'agoricContract',
+          instancePath: ['fastUsdc'],
+          callPipe: [['makeDepositInvitation', []]],
+        },
+        proposal: {
+          give: {
+            USDC: { brand: usdc, value: opts.amount },
+          },
+        },
+      };
+
+      /** @type {ExecuteOfferAction} */
+      const bridgeAction = {
+        method: 'executeOffer',
+        offer,
+      };
+
+      outputActionAndHint(bridgeAction, { stderr, stdout }, vsk.marshaller);
+    });
+
+  operator
+    .command('withdraw')
+    .description("Withdraw USDC from the LP's pool share")
+    .addHelpText(
+      'after',
+      '\nPipe the STDOUT to a file such as withdraw.json, then use the Agoric CLI to broadcast it:\n  agoric wallet send --offer accept.json --from gov1 --keyring-backend="test"',
+    )
+    .requiredOption('--amount <number>', 'FastLP amount', parseNat)
+    .option('--offerId <string>', 'Offer id', String, `lpWithdraw-${now()}`)
+    .action(async opts => {
+      vskP ||= loadVsk();
+      const vsk = await vskP;
+
+      /** @type {Brand<'nat'>} */
+      // @ts-expect-error it doesnt recognize usdc as a Brand type
+      const poolShare = vsk.agoricNames.brand.FastLP;
+      assert(poolShare, 'FastLP brand not in agoricNames');
+
+      /** @type {OfferSpec} */
+      const offer = {
+        id: opts.offerId,
+        invitationSpec: {
+          source: 'agoricContract',
+          instancePath: ['fastUsdc'],
+          callPipe: [['makeWithdrawInvitation', []]],
+        },
+        proposal: {
+          give: {
+            PoolShare: { brand: poolShare, value: opts.amount },
+          },
+        },
+      };
+
+      outputActionAndHint(
+        { method: 'executeOffer', offer },
+        { stderr, stdout },
+        vsk.marshaller,
+      );
+    });
+
+  return operator;
+};
diff --git a/packages/fast-usdc/test/cli/cli.test.ts b/packages/fast-usdc/test/cli/cli.test.ts
index cfde8387677..7eae770761e 100644
--- a/packages/fast-usdc/test/cli/cli.test.ts
+++ b/packages/fast-usdc/test/cli/cli.test.ts
@@ -81,43 +81,23 @@ test('shows help for config show command', async t => {
   t.snapshot(output);
 });
 
-test('shows help for deposit command', async t => {
-  const output = await runCli(['deposit', '-h']);
-  t.snapshot(output);
-});
-
-test('shows help for withdraw command', async t => {
-  const output = await runCli(['withdraw', '-h']);
-  t.snapshot(output);
-});
-
 test('shows error when deposit command is run without options', async t => {
-  const output = await runCli(['deposit']);
+  const output = await runCli(['lp', 'deposit']);
   t.snapshot(output);
 });
 
 test('shows error when deposit command is run with invalid amount', async t => {
-  const output = await runCli(['deposit', 'not-a-number']);
-  t.snapshot(output);
-});
-
-test('shows error when deposit command is run with invalid fee', async t => {
-  const output = await runCli(['deposit', '50', '--fee', 'not-a-number']);
+  const output = await runCli(['lp', 'deposit', '--amount', 'not-a-number']);
   t.snapshot(output);
 });
 
 test('shows error when withdraw command is run without options', async t => {
-  const output = await runCli(['withdraw']);
+  const output = await runCli(['lp', 'withdraw']);
   t.snapshot(output);
 });
 
 test('shows error when withdraw command is run with invalid amount', async t => {
-  const output = await runCli(['withdraw', 'not-a-number']);
-  t.snapshot(output);
-});
-
-test('shows error when withdraw command is run with invalid fee', async t => {
-  const output = await runCli(['withdraw', '50', '--fee', 'not-a-number']);
+  const output = await runCli(['lp', 'withdraw', '--amount', 'not-a-number']);
   t.snapshot(output);
 });
 
diff --git a/packages/fast-usdc/test/cli/lp-commands.test.ts b/packages/fast-usdc/test/cli/lp-commands.test.ts
new file mode 100644
index 00000000000..b87c8281faf
--- /dev/null
+++ b/packages/fast-usdc/test/cli/lp-commands.test.ts
@@ -0,0 +1,114 @@
+import { makeMarshal } from '@endo/marshal';
+import anyTest, { type TestFn } from 'ava';
+import { Command } from 'commander';
+import { flags } from '../../tools/cli-tools.js';
+import { mockStream } from '../../tools/mock-io.js';
+import { addLPCommands } from '../../src/cli/lp-commands.js';
+
+const makeTestContext = () => {
+  const program = new Command();
+  program.exitOverride();
+  const out = [] as string[];
+  const err = [] as string[];
+
+  const USDC = 'usdcbrand';
+  const FastLP = 'fastlpbrand';
+  const slotToVal = {
+    '0': USDC,
+    '1': FastLP,
+  };
+  const valToSlot = {
+    USDC: '0',
+    FastLP: '1',
+  };
+  const marshaller = makeMarshal(
+    val => valToSlot[val],
+    slot => slotToVal[slot],
+  );
+  const now = () => 1234;
+
+  addLPCommands(program, {
+    vstorageKit: {
+      // @ts-expect-error fake brands
+      agoricNames: { brand: { FastLP, USDC } },
+      marshaller,
+    },
+    stdout: mockStream<typeof process.stdout>(out),
+    stderr: mockStream<typeof process.stderr>(err),
+    env: {},
+    now,
+  });
+
+  return { program, marshaller, out, err, USDC, FastLP, now };
+};
+
+const test = anyTest as TestFn<Awaited<ReturnType<typeof makeTestContext>>>;
+test.beforeEach(async t => (t.context = await makeTestContext()));
+
+test('fast-usdc lp deposit sub-command', async t => {
+  const { program, marshaller, out, err, USDC, now } = t.context;
+  const amount = 100;
+  const argv = [
+    ...`node fast-usdc lp deposit`.split(' '),
+    ...flags({ amount }),
+  ];
+  t.log(...argv);
+  await program.parseAsync(argv);
+
+  const action = marshaller.fromCapData(JSON.parse(out.join('')));
+  t.deepEqual(action, {
+    method: 'executeOffer',
+    offer: {
+      id: `lpDeposit-${now()}`,
+      invitationSpec: {
+        source: 'agoricContract',
+        instancePath: ['fastUsdc'],
+        callPipe: [['makeDepositInvitation', []]],
+      },
+      proposal: {
+        give: {
+          USDC: { brand: USDC, value: BigInt(amount) },
+        },
+      },
+    },
+  });
+
+  t.is(
+    err.join(''),
+    'Now use `agoric wallet send ...` to sign and broadcast the offer.\n',
+  );
+});
+
+test('fast-usdc lp withdraw sub-command', async t => {
+  const { program, marshaller, out, err, FastLP, now } = t.context;
+  const amount = 100;
+  const argv = [
+    ...`node fast-usdc lp withdraw`.split(' '),
+    ...flags({ amount }),
+  ];
+  t.log(...argv);
+  await program.parseAsync(argv);
+
+  const action = marshaller.fromCapData(JSON.parse(out.join('')));
+  t.deepEqual(action, {
+    method: 'executeOffer',
+    offer: {
+      id: `lpWithdraw-${now()}`,
+      invitationSpec: {
+        source: 'agoricContract',
+        instancePath: ['fastUsdc'],
+        callPipe: [['makeWithdrawInvitation', []]],
+      },
+      proposal: {
+        give: {
+          PoolShare: { brand: FastLP, value: BigInt(amount) },
+        },
+      },
+    },
+  });
+
+  t.is(
+    err.join(''),
+    'Now use `agoric wallet send ...` to sign and broadcast the offer.\n',
+  );
+});
diff --git a/packages/fast-usdc/test/cli/snapshots/cli.test.ts.md b/packages/fast-usdc/test/cli/snapshots/cli.test.ts.md
index 07607d1eab1..855006de77e 100644
--- a/packages/fast-usdc/test/cli/snapshots/cli.test.ts.md
+++ b/packages/fast-usdc/test/cli/snapshots/cli.test.ts.md
@@ -13,19 +13,18 @@ Generated by [AVA](https://avajs.dev).
     CLI to interact with Fast USDC liquidity pool␊
     ␊
     Options:␊
-      -V, --version              output the version number␊
-      --home <path>              Home directory to use for config (default:␊
-                                 "~/.fast-usdc")␊
-      -h, --help                 display help for command␊
+      -V, --version             output the version number␊
+      --home <path>             Home directory to use for config (default:␊
+                                "~/.fast-usdc")␊
+      -h, --help                display help for command␊
     ␊
     Commands:␊
-      config                     Manage config␊
-      operator                   Oracle operator commands␊
-      deposit [options] <give>   Offer assets to the liquidity pool␊
-      withdraw [options] <want>  Withdraw assets from the liquidity pool␊
-      transfer <amount> <dest>   Transfer USDC from Ethereum/L2 to Cosmos via Fast␊
-                                 USDC␊
-      help [command]             display help for command␊
+      config                    Manage config␊
+      operator                  Oracle operator commands␊
+      lp                        Liquidity Provider commands␊
+      transfer <amount> <dest>  Transfer USDC from Ethereum/L2 to Cosmos via Fast␊
+                                USDC␊
+      help [command]            display help for command␊
     ␊
       Agoric test networks provide configuration info at, for example,␊
     ␊
@@ -193,93 +192,29 @@ Generated by [AVA](https://avajs.dev).
       Use AGORIC_NET=local or leave it unset to use localhost and chain id agoriclocal.␊
       `
 
-## shows help for deposit command
-
-> Snapshot 1
-
-    `Usage: fast-usdc deposit [options] <give>␊
-    ␊
-    Offer assets to the liquidity pool␊
-    ␊
-    Arguments:␊
-      give             USDC to give␊
-    ␊
-    Options:␊
-      --id [offer-id]  Offer ID␊
-      --fee [fee]      Cosmos fee␊
-      -h, --help       display help for command␊
-    ␊
-      Agoric test networks provide configuration info at, for example,␊
-    ␊
-      https://devnet.agoric.net/network-config␊
-    ␊
-      To use RPC endpoints from such a configuration, use:␊
-      export AGORIC_NET=devnet␊
-    ␊
-      Use AGORIC_NET=local or leave it unset to use localhost and chain id agoriclocal.␊
-      `
-
-## shows help for withdraw command
-
-> Snapshot 1
-
-    `Usage: fast-usdc withdraw [options] <want>␊
-    ␊
-    Withdraw assets from the liquidity pool␊
-    ␊
-    Arguments:␊
-      want             USDC to withdraw␊
-    ␊
-    Options:␊
-      --id [offer-id]  Offer ID␊
-      --fee [fee]      Cosmos fee␊
-      -h, --help       display help for command␊
-    ␊
-      Agoric test networks provide configuration info at, for example,␊
-    ␊
-      https://devnet.agoric.net/network-config␊
-    ␊
-      To use RPC endpoints from such a configuration, use:␊
-      export AGORIC_NET=devnet␊
-    ␊
-      Use AGORIC_NET=local or leave it unset to use localhost and chain id agoriclocal.␊
-      `
-
 ## shows error when deposit command is run without options
 
 > Snapshot 1
 
-    'error: missing required argument \'give\''
+    'error: required option \'--amount <number>\' not specified'
 
 ## shows error when deposit command is run with invalid amount
 
 > Snapshot 1
 
-    'error: command-argument value \'not-a-number\' is invalid for argument \'give\'. Not a decimal number.'
-
-## shows error when deposit command is run with invalid fee
-
-> Snapshot 1
-
-    'error: option \'--fee [fee]\' argument \'not-a-number\' is invalid. Fee must be a number.'
+    'error: option \'--amount <number>\' argument \'not-a-number\' is invalid. Not a number'
 
 ## shows error when withdraw command is run without options
 
 > Snapshot 1
 
-    'error: missing required argument \'want\''
+    'error: required option \'--amount <number>\' not specified'
 
 ## shows error when withdraw command is run with invalid amount
 
 > Snapshot 1
 
-    'error: command-argument value \'not-a-number\' is invalid for argument \'want\'. Not a decimal number.'
-
-## shows error when withdraw command is run with invalid fee
-
-> Snapshot 1
-
-    'error: option \'--fee [fee]\' argument \'not-a-number\' is invalid. Fee must be a number.'
+    'error: option \'--amount <number>\' argument \'not-a-number\' is invalid. Not a number'
 
 ## shows error when config init command is run without options
 
diff --git a/packages/fast-usdc/test/cli/snapshots/cli.test.ts.snap b/packages/fast-usdc/test/cli/snapshots/cli.test.ts.snap
index 2d0eac4dcb4..eee94a8427c 100644
Binary files a/packages/fast-usdc/test/cli/snapshots/cli.test.ts.snap and b/packages/fast-usdc/test/cli/snapshots/cli.test.ts.snap differ