diff --git a/src/components/AssetInfo.tsx b/src/components/AssetInfo.tsx
new file mode 100644
index 0000000..9426277
--- /dev/null
+++ b/src/components/AssetInfo.tsx
@@ -0,0 +1,34 @@
+import React from 'react';
+
+export const AssetInfo: React.FC<unknown> = () => {
+  return (
+    <form name="assetInfo">
+      <fieldset>
+        <caption>Asset Info</caption>
+        <label>
+          Name:
+          <br /> <input type="text" name="issuerName" placeholder="ABC" />
+        </label>
+        <br />
+        <label>
+          decimalPlaces:
+          <br />
+          <input type="number" name="decimalPlaces" defaultValue={6} min={1} />
+        </label>
+        <br />
+        <label>
+          denom:
+          <br /> <input type="text" name="denom" placeholder="ibc/DEADBEEF" />
+        </label>
+        <ul style={{ fontSize: 'small', fontStyle: 'italic' }}>
+          <li>
+            <em>stretch goal: oracle support: addresses</em>
+          </li>
+          <li>
+            <em>stretch goal: vault collateral option</em>
+          </li>
+        </ul>
+      </fieldset>
+    </form>
+  );
+};
diff --git a/src/components/ProposalForm.tsx b/src/components/ProposalForm.tsx
index 63aebcb..5b8dc09 100644
--- a/src/components/ProposalForm.tsx
+++ b/src/components/ProposalForm.tsx
@@ -5,15 +5,16 @@ import {
   forwardRef,
   FormEvent,
   ReactNode,
-} from "react";
-import { CodeInputGroup } from "./CodeInputGroup";
-import { CoreEval } from "@agoric/cosmic-proto/swingset/swingset.js";
-import { Button } from "./Button";
-import { ParamChange } from "cosmjs-types/cosmos/params/v1beta1/params";
-import { ParameterChangeFormSection } from "./ParameterChangeForm";
-import { DepositSection } from "./DepositSection";
-import { paramOptions } from "../config/agoric";
-import type { ParameterChangeTypeOption } from "../types/form";
+} from 'react';
+import { CodeInputGroup } from './CodeInputGroup';
+import { CoreEval } from '@agoric/cosmic-proto/swingset/swingset.js';
+import { Button } from './Button';
+import { ParamChange } from 'cosmjs-types/cosmos/params/v1beta1/params';
+import { ParameterChangeFormSection } from './ParameterChangeForm';
+import { DepositSection } from './DepositSection';
+import { paramOptions } from '../config/agoric';
+import type { ParameterChangeTypeOption } from '../types/form';
+import { AssetInfo } from './AssetInfo.tsx';
 
 type BaseProposalArgs = {
   title: string;
@@ -23,22 +24,22 @@ type BaseProposalArgs = {
 
 export type ProposalArgs = BaseProposalArgs & ProposalDetail;
 
-export type QueryType = ReturnType<(typeof paramOptions)[number]["query"]>;
+export type QueryType = ReturnType<(typeof paramOptions)[number]['query']>;
 export type SelectorReturnType = ReturnType<
-  (typeof paramOptions)[number]["selector"]
+  (typeof paramOptions)[number]['selector']
 >;
 
 export type ProposalDetail =
-  | { msgType: "textProposal" }
-  | { msgType: "coreEvalProposal"; evals: CoreEval[] }
-  | { msgType: "parameterChangeProposal"; changes: ParamChange[] };
+  | { msgType: 'textProposal' }
+  | { msgType: 'coreEvalProposal'; evals: CoreEval[] }
+  | { msgType: 'parameterChangeProposal'; changes: ParamChange[] };
 
 interface ProposalFormProps {
   title: string;
   description: string | ReactNode;
   handleSubmit: (proposal: ProposalArgs) => void;
   titleDescOnly?: boolean;
-  msgType: QueryParams["msgType"];
+  msgType: QueryParams['msgType'];
   governanceForumLink: string;
 }
 
@@ -70,23 +71,23 @@ const ProposalForm = forwardRef<ProposalFormMethods, ProposalFormProps>(
       if (formRef?.current) {
         const formData = new FormData(formRef.current);
         if (formData) {
-          const title = (formData.get("title") as string) || "";
-          const description = (formData.get("description") as string) || "";
-          const depositBld = (formData.get("deposit") as string) || "";
+          const title = (formData.get('title') as string) || '';
+          const description = (formData.get('description') as string) || '';
+          const depositBld = (formData.get('deposit') as string) || '';
           const deposit = Number(depositBld) * 1_000_000;
           const args: BaseProposalArgs = { title, description, deposit };
-          if (msgType === "coreEvalProposal" && evals.length) {
+          if (msgType === 'coreEvalProposal' && evals.length) {
             return handleSubmit({ ...args, msgType, evals });
-          } else if (msgType == "textProposal") {
+          } else if (msgType == 'textProposal') {
             return handleSubmit({ ...args, msgType });
-          } else if (msgType === "parameterChangeProposal") {
+          } else if (msgType === 'parameterChangeProposal') {
             const changes = paramChangeRef.current?.getChanges();
-            if (!Array.isArray(changes)) throw new Error("No changes");
+            if (!Array.isArray(changes)) throw new Error('No changes');
             return handleSubmit({ ...args, msgType, changes });
           }
         }
       }
-      throw new Error("Error reading form data.");
+      throw new Error('Error reading form data.');
     };
 
     return (
@@ -101,7 +102,7 @@ const ProposalForm = forwardRef<ProposalFormMethods, ProposalFormProps>(
             </p>
 
             <div className="mt-10 space-y-8 border-b border-gray-900/10 pb-12 sm:space-y-0 sm:divide-y sm:divide-gray-900/10 sm:border-t sm:pb-0">
-              {msgType === "parameterChangeProposal" ? (
+              {msgType === 'parameterChangeProposal' ? (
                 <ParameterChangeFormSection<QueryType, SelectorReturnType>
                   ref={paramChangeRef}
                   options={
@@ -143,13 +144,13 @@ const ProposalForm = forwardRef<ProposalFormMethods, ProposalFormProps>(
                     name="description"
                     rows={3}
                     className="block w-full max-w-2xl rounded-md border-0 py-1.5 text-gray-900 shadow-sm ring-1 ring-inset ring-gray-300 placeholder:text-gray-400 focus:ring-2 focus:ring-inset focus:ring-teal-600 sm:text-sm sm:leading-6"
-                    defaultValue={""}
+                    defaultValue={''}
                     placeholder="Description"
                   />
                   <p className="mt-3 text-sm leading-6 text-gray-600">
                     Write a few sentences about the proposal and include any
                     relevant links. Before proposing to Mainnet, please ensure
-                    you've started a discussion on the{" "}
+                    you've started a discussion on the{' '}
                     <a
                       className="cursor-pointer hover:text-gray-900 underline"
                       href={governanceForumLink}
@@ -161,7 +162,8 @@ const ProposalForm = forwardRef<ProposalFormMethods, ProposalFormProps>(
                 </div>
               </div>
 
-              {msgType === "coreEvalProposal" ? (
+              <AssetInfo />
+              {msgType === 'coreEvalProposal' ? (
                 <div className="sm:grid sm:grid-cols-4 sm:items-start sm:gap-4 sm:py-6">
                   <label
                     htmlFor="description"
diff --git a/src/lib/addInterchainAsset.js b/src/lib/addInterchainAsset.js
new file mode 100644
index 0000000..2015bab
--- /dev/null
+++ b/src/lib/addInterchainAsset.js
@@ -0,0 +1,124 @@
+/**
+ * 1. start a mintHolder instance
+ *    a. publish displayInfo under boardAux
+ * 2. register the resulting issuer with the vbank
+ */
+// @ts-check
+/* global assert, harden */
+
+import { E } from '@endo/far';
+
+const interchainAssetOptions = {
+  denom: 'ibc/...',
+  decimalPlaces: 6,
+  issuerName: 'Asset1',
+  proposedName: 'Asset1',
+};
+
+/** @template T @typedef {import('@endo/eventual-send').ERef<T>} ERef<T> */
+/**
+ * @typedef {object} StorageNode
+ * @property {(data: string) => Promise<void>} setValue
+ * @property {(subPath: string, options?: {sequence?: boolean}) => StorageNode} makeChildNode
+ */
+
+export const toCapDataString = x =>
+  JSON.stringify({ body: '#' + JSON.stringify(x), slots: [] });
+
+const BOARD_AUX = 'boardAux';
+/**
+ * Publish Brand displayInfo using boardAux conventions
+ *
+ * @param {ERef<StorageNode>} chainStorage
+ * @param {ERef<import('@agoric/vats').Board>} board
+ * @param {Brand} brand
+ */
+const publishBrandInfo = async (chainStorage, board, brand) => {
+  const [boardId, displayInfo] = await Promise.all([
+    E(board).getId(brand),
+    E(brand).getDisplayInfo(),
+  ]);
+  const boardAux = E(chainStorage).makeChildNode(BOARD_AUX);
+  const node = E(boardAux).makeChildNode(boardId);
+  const value = toCapDataString({ displayInfo });
+  await E(node).setValue(value);
+};
+
+/**
+ * based on publishInterchainAssetFromBank
+ * https://github.com/Agoric/agoric-sdk/blob/fb940f84636c4ac9c984a593ec4b5a8ae5150039/packages/inter-protocol/src/proposals/addAssetToVault.js
+ *
+ * @param {*} powers
+ */
+const execute = async powers => {
+  const {
+    consume: { chainStorage, board, bankManager, startUpgradable },
+    installation: {
+      consume: { mintHolder },
+    },
+    issuer: { produce: produceIssuer },
+    brand: { produce: produceBrand },
+    instance: { produce: produceInstance },
+  } = powers;
+
+  const {
+    denom,
+    decimalPlaces,
+    keyword,
+    issuerName = keyword,
+    proposedName = keyword,
+  } = interchainAssetOptions;
+
+  assert.typeof(denom, 'string');
+  assert.typeof(decimalPlaces, 'number');
+  assert.typeof(issuerName, 'string');
+  assert.typeof(proposedName, 'string');
+
+  const terms = {
+    keyword: issuerName, // "keyword" is a misnomer in mintHolder terms
+    assetKind: AssetKind.NAT,
+    displayInfo: {
+      decimalPlaces,
+      assetKind: AssetKind.NAT,
+    },
+  };
+
+  const {
+    creatorFacet: mint,
+    publicFacet: issuer,
+    instance,
+  } = await E(startUpgradable)({
+    installation: mintHolder,
+    label: issuerName,
+    privateArgs: undefined,
+    terms,
+  });
+
+  const brand = await E(issuer).getBrand();
+  const kit = { mint, issuer, brand };
+
+  publishBrandInfo(chainStorage, board, brand);
+  [produceIssuer, produceBrand, produceInstance].forEach(p =>
+    p[issuerName].reset()
+  );
+  produceIssuer[issuerName].resolve(issuer);
+  produceBrand[issuerName].resolve(brand);
+  produceInstance[issuerName].resolve(instance);
+
+  await E(bankManager).addAsset(denom, issuerName, proposedName, kit);
+};
+
+export const permit = {
+  consume: {
+    chainStorage: true,
+    board: true,
+    bankManager: true,
+    startUpgradable: true,
+  },
+  installation: {
+    consume: { mintHolder: true },
+  },
+  issuer: { produce: true },
+  brand: { produce: true },
+  instance: { produce: true },
+};
diff --git a/src/lib/addInterchainAsset.spec.ts b/src/lib/addInterchainAsset.spec.ts
new file mode 100644
index 0000000..b8cffae
--- /dev/null
+++ b/src/lib/addInterchainAsset.spec.ts
@@ -0,0 +1,55 @@
+/**
+ * 1. start a mintHolder instance
+ *    a. publish displayInfo under boardAux
+ * 2. register the resulting issuer with the vbank
+ */
+// @ts-check
+/* global describe, expect, it, harden, Compartment */
+
+import '../installSesLockdown.js';
+import { readFile } from 'fs/promises';
+import { createRequire } from 'module';
+import { makeMarshal } from '@endo/marshal';
+import { toCapDataString } from './addInterchainAsset.js';
+import {
+  hideImportExpr,
+  omitExportKewords,
+  redactImportDecls,
+} from '../utils/module-to-script.js';
+
+const nodeRequire = createRequire(import.meta.url);
+
+const assets = {
+  addInterchainAsset: nodeRequire.resolve('./addInterchainAsset.js'),
+};
+
+describe('toCapDataString', () => {
+  it('agrees with marshal', () => {
+    const cases = [
+      { decimalPlaces: 6 },
+      { assetKind: 'nat' },
+      // HAZARD: caller has to sort keys
+      { assetKind: 'nat', decimalPlaces: 18 },
+    ];
+    const m = makeMarshal(undefined, undefined, {
+      serializeBodyFormat: 'smallcaps',
+    });
+    for (const data of cases) {
+      harden(data);
+      const actual = toCapDataString(data);
+      const expected = JSON.stringify(m.toCapData(data));
+      expect(actual).toBe(expected);
+    }
+  });
+});
+
+describe('addInterchainAsset.js', () => {
+  it('can easily be rendered as a script', async () => {
+    const modText = await readFile(assets.addInterchainAsset, 'utf8');
+    const script = hideImportExpr(
+      omitExportKewords(redactImportDecls(modText))
+    );
+    const c = new Compartment({ E: () => {}, Far: () => {} });
+    expect(() => c.evaluate(script)).not.toThrow();
+  });
+});
diff --git a/src/utils/module-to-script.js b/src/utils/module-to-script.js
new file mode 100644
index 0000000..feec1be
--- /dev/null
+++ b/src/utils/module-to-script.js
@@ -0,0 +1,10 @@
+// @ts-check
+
+export const redactImportDecls = txt =>
+  txt.replace(/^\s*import\b\s*(.*)/gm, '// REDACTED: $1');
+
+export const omitExportKewords = txt => txt.replace(/^\s*export\b\s*/gm, '');
+
+// cf. ses rejectImportExpressions
+// https://github.com/endojs/endo/blob/ebc8f66e9498f13085a8e64e17fc2f5f7b528faa/packages/ses/src/transforms.js#L143
+export const hideImportExpr = txt => txt.replace(/\bimport\b/g, 'XMPORT');