diff --git a/packages/kernel-agents/package.json b/packages/kernel-agents/package.json
index 0b7d4bc9a..a32e72e77 100644
--- a/packages/kernel-agents/package.json
+++ b/packages/kernel-agents/package.json
@@ -184,6 +184,7 @@
   "dependencies": {
     "@endo/eventual-send": "^1.3.4",
     "@metamask/kernel-errors": "workspace:^",
+    "@metamask/kernel-exo": "workspace:^",
     "@metamask/kernel-utils": "workspace:^",
     "@metamask/logger": "workspace:^",
     "@ocap/kernel-language-model-service": "workspace:^",
diff --git a/packages/kernel-agents/src/capabilities/discover.ts b/packages/kernel-agents/src/capabilities/discover.ts
index a8e71e703..f3077f81c 100644
--- a/packages/kernel-agents/src/capabilities/discover.ts
+++ b/packages/kernel-agents/src/capabilities/discover.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import type { DiscoverableExo, MethodSchema } from '@metamask/kernel-utils';
+import type { DiscoverableExo, MethodSchema } from '@metamask/kernel-exo';
 
 import type { CapabilityRecord, CapabilitySpec } from '../types.ts';
 
diff --git a/packages/kernel-agents/src/types/capability.ts b/packages/kernel-agents/src/types/capability.ts
index 9d6dbc928..645e1a7f3 100644
--- a/packages/kernel-agents/src/types/capability.ts
+++ b/packages/kernel-agents/src/types/capability.ts
@@ -1,4 +1,4 @@
-import type { JsonSchema } from '@metamask/kernel-utils';
+import type { JsonSchema } from '@metamask/kernel-exo';
 
 export type Capability<Args extends Record<string, unknown>, Return = null> = (
   args: Args,
diff --git a/packages/kernel-agents/tsconfig.build.json b/packages/kernel-agents/tsconfig.build.json
index 14b63bcd1..a022a6c0e 100644
--- a/packages/kernel-agents/tsconfig.build.json
+++ b/packages/kernel-agents/tsconfig.build.json
@@ -8,6 +8,7 @@
     "types": ["node"]
   },
   "references": [
+    { "path": "../kernel-exo/tsconfig.build.json" },
     { "path": "../kernel-language-model-service/tsconfig.build.json" },
     { "path": "../kernel-utils/tsconfig.build.json" },
     { "path": "../logger/tsconfig.build.json" }
diff --git a/packages/kernel-agents/tsconfig.json b/packages/kernel-agents/tsconfig.json
index f0958ab59..418121789 100644
--- a/packages/kernel-agents/tsconfig.json
+++ b/packages/kernel-agents/tsconfig.json
@@ -6,6 +6,7 @@
     "types": ["vitest", "node", "ses"]
   },
   "references": [
+    { "path": "../kernel-exo" },
     { "path": "../kernel-language-model-service" },
     { "path": "../kernel-utils" },
     { "path": "../logger" },
diff --git a/packages/kernel-exo/package.json b/packages/kernel-exo/package.json
new file mode 100644
index 000000000..8a2714aff
--- /dev/null
+++ b/packages/kernel-exo/package.json
@@ -0,0 +1,89 @@
+{
+  "name": "@metamask/kernel-exo",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Exo creation utilities for the Ocap Kernel",
+  "homepage": "https://github.com/MetaMask/ocap-kernel/tree/main/packages/kernel-exo#readme",
+  "bugs": {
+    "url": "https://github.com/MetaMask/ocap-kernel/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/MetaMask/ocap-kernel.git"
+  },
+  "type": "module",
+  "exports": {
+    ".": {
+      "import": {
+        "types": "./dist/index.d.mts",
+        "default": "./dist/index.mjs"
+      },
+      "require": {
+        "types": "./dist/index.d.cts",
+        "default": "./dist/index.cjs"
+      }
+    },
+    "./package.json": "./package.json"
+  },
+  "files": [
+    "dist/"
+  ],
+  "scripts": {
+    "build": "ts-bridge --project tsconfig.build.json --no-references --clean",
+    "build:docs": "typedoc",
+    "changelog:validate": "../../scripts/validate-changelog.sh @metamask/kernel-exo",
+    "clean": "rimraf --glob './*.tsbuildinfo' ./.eslintcache ./coverage ./dist ./.turbo ./logs",
+    "lint": "yarn lint:eslint && yarn lint:misc --check && yarn constraints && yarn lint:dependencies",
+    "lint:dependencies": "depcheck --quiet",
+    "lint:eslint": "eslint . --cache",
+    "lint:fix": "yarn lint:eslint --fix && yarn lint:misc --write && yarn constraints --fix && yarn lint:dependencies",
+    "lint:misc": "prettier --no-error-on-unmatched-pattern '**/*.json' '**/*.md' '**/*.html' '!**/CHANGELOG.old.md' '**/*.yml' '!.yarnrc.yml' '!merged-packages/**' --ignore-path ../../.gitignore --log-level error",
+    "publish:preview": "yarn npm publish --tag preview",
+    "test": "vitest run --config vitest.config.ts",
+    "test:clean": "yarn test --no-cache --coverage.clean",
+    "test:dev": "yarn test --mode development",
+    "test:verbose": "yarn test --reporter verbose",
+    "test:watch": "vitest --config vitest.config.ts",
+    "test:dev:quiet": "yarn test:dev --reporter @ocap/repo-tools/vitest-reporters/silent"
+  },
+  "dependencies": {
+    "@endo/exo": "^1.5.12",
+    "@endo/patterns": "^1.7.0",
+    "@metamask/kernel-utils": "workspace:^"
+  },
+  "devDependencies": {
+    "@arethetypeswrong/cli": "^0.17.4",
+    "@metamask/auto-changelog": "^5.3.0",
+    "@metamask/eslint-config": "^15.0.0",
+    "@metamask/eslint-config-nodejs": "^15.0.0",
+    "@metamask/eslint-config-typescript": "^15.0.0",
+    "@ocap/repo-tools": "workspace:^",
+    "@ts-bridge/cli": "^0.6.3",
+    "@ts-bridge/shims": "^0.1.1",
+    "@typescript-eslint/eslint-plugin": "^8.29.0",
+    "@typescript-eslint/parser": "^8.29.0",
+    "@typescript-eslint/utils": "^8.29.0",
+    "@vitest/eslint-plugin": "^1.6.5",
+    "depcheck": "^1.4.7",
+    "eslint": "^9.23.0",
+    "eslint-config-prettier": "^10.1.1",
+    "eslint-import-resolver-typescript": "^4.3.1",
+    "eslint-plugin-import-x": "^4.10.0",
+    "eslint-plugin-jsdoc": "^50.6.9",
+    "eslint-plugin-n": "^17.17.0",
+    "eslint-plugin-prettier": "^5.2.6",
+    "eslint-plugin-promise": "^7.2.1",
+    "prettier": "^3.5.3",
+    "rimraf": "^6.0.1",
+    "ses": "^1.14.0",
+    "turbo": "^2.5.6",
+    "typedoc": "^0.28.1",
+    "typescript": "~5.8.2",
+    "typescript-eslint": "^8.29.0",
+    "vite": "^7.3.0",
+    "vitest": "^4.0.16"
+  },
+  "engines": {
+    "node": ">=22"
+  }
+}
diff --git a/packages/kernel-utils/src/discoverable.test.ts b/packages/kernel-exo/src/discoverable.test.ts
similarity index 100%
rename from packages/kernel-utils/src/discoverable.test.ts
rename to packages/kernel-exo/src/discoverable.test.ts
diff --git a/packages/kernel-utils/src/discoverable.ts b/packages/kernel-exo/src/discoverable.ts
similarity index 97%
rename from packages/kernel-utils/src/discoverable.ts
rename to packages/kernel-exo/src/discoverable.ts
index 65a1c07f2..72af57b0b 100644
--- a/packages/kernel-utils/src/discoverable.ts
+++ b/packages/kernel-exo/src/discoverable.ts
@@ -1,9 +1,9 @@
 import { makeExo } from '@endo/exo';
 import type { Methods } from '@endo/exo';
 import type { InterfaceGuard } from '@endo/patterns';
+import { mergeDisjointRecords } from '@metamask/kernel-utils';
 
 import { makeDefaultInterface } from './exo.ts';
-import { mergeDisjointRecords } from './merge-disjoint-records.ts';
 import type { MethodSchema } from './schema.ts';
 
 /**
diff --git a/packages/kernel-utils/src/exo.test.ts b/packages/kernel-exo/src/exo.test.ts
similarity index 100%
rename from packages/kernel-utils/src/exo.test.ts
rename to packages/kernel-exo/src/exo.test.ts
diff --git a/packages/kernel-utils/src/exo.ts b/packages/kernel-exo/src/exo.ts
similarity index 100%
rename from packages/kernel-utils/src/exo.ts
rename to packages/kernel-exo/src/exo.ts
diff --git a/packages/kernel-exo/src/index.ts b/packages/kernel-exo/src/index.ts
new file mode 100644
index 000000000..fed1cd518
--- /dev/null
+++ b/packages/kernel-exo/src/index.ts
@@ -0,0 +1,4 @@
+export { makeDefaultInterface, makeDefaultExo } from './exo.ts';
+export { makeDiscoverableExo } from './discoverable.ts';
+export type { DiscoverableExo } from './discoverable.ts';
+export type { JsonSchema, MethodSchema } from './schema.ts';
diff --git a/packages/kernel-utils/src/schema.ts b/packages/kernel-exo/src/schema.ts
similarity index 100%
rename from packages/kernel-utils/src/schema.ts
rename to packages/kernel-exo/src/schema.ts
diff --git a/packages/kernel-exo/tsconfig.build.json b/packages/kernel-exo/tsconfig.build.json
new file mode 100644
index 000000000..85fa65ecb
--- /dev/null
+++ b/packages/kernel-exo/tsconfig.build.json
@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.packages.build.json",
+  "compilerOptions": {
+    "baseUrl": "./",
+    "lib": ["ES2022"],
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "types": ["ses"]
+  },
+  "references": [{ "path": "../kernel-utils/tsconfig.build.json" }],
+  "files": [],
+  "include": ["./src"]
+}
diff --git a/packages/kernel-exo/tsconfig.json b/packages/kernel-exo/tsconfig.json
new file mode 100644
index 000000000..bdff168bd
--- /dev/null
+++ b/packages/kernel-exo/tsconfig.json
@@ -0,0 +1,15 @@
+{
+  "extends": "../../tsconfig.packages.json",
+  "compilerOptions": {
+    "baseUrl": "./",
+    "lib": ["ES2022"],
+    "types": ["ses", "vitest"]
+  },
+  "references": [{ "path": "../kernel-utils" }, { "path": "../repo-tools" }],
+  "include": [
+    "../../vitest.config.ts",
+    "./src",
+    "./vite.config.ts",
+    "./vitest.config.ts"
+  ]
+}
diff --git a/packages/kernel-exo/vitest.config.ts b/packages/kernel-exo/vitest.config.ts
new file mode 100644
index 000000000..968805a3c
--- /dev/null
+++ b/packages/kernel-exo/vitest.config.ts
@@ -0,0 +1,22 @@
+import { mergeConfig } from '@ocap/repo-tools/vitest-config';
+import { fileURLToPath } from 'node:url';
+import { defineConfig, defineProject } from 'vitest/config';
+
+import defaultConfig from '../../vitest.config.ts';
+
+export default defineConfig((args) => {
+  return mergeConfig(
+    args,
+    defaultConfig,
+    defineProject({
+      test: {
+        name: 'kernel-exo',
+        setupFiles: [
+          fileURLToPath(
+            import.meta.resolve('@ocap/repo-tools/test-utils/mock-endoify'),
+          ),
+        ],
+      },
+    }),
+  );
+});
diff --git a/packages/kernel-test/package.json b/packages/kernel-test/package.json
index 2cb1cdea7..ba98eeb00 100644
--- a/packages/kernel-test/package.json
+++ b/packages/kernel-test/package.json
@@ -54,6 +54,7 @@
     "@endo/promise-kit": "^1.1.13",
     "@libp2p/crypto": "5.1.8",
     "@libp2p/peer-id": "5.1.9",
+    "@metamask/kernel-exo": "workspace:^",
     "@metamask/kernel-store": "workspace:^",
     "@metamask/kernel-utils": "workspace:^",
     "@metamask/logger": "workspace:^",
diff --git a/packages/kernel-test/src/service.test.ts b/packages/kernel-test/src/service.test.ts
index 5275daf06..63027d858 100644
--- a/packages/kernel-test/src/service.test.ts
+++ b/packages/kernel-test/src/service.test.ts
@@ -1,5 +1,6 @@
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import { makeSQLKernelDatabase } from '@metamask/kernel-store/sqlite/nodejs';
-import { makeDefaultExo, waitUntilQuiescent } from '@metamask/kernel-utils';
+import { waitUntilQuiescent } from '@metamask/kernel-utils';
 import { Kernel, krefOf } from '@metamask/ocap-kernel';
 import type { KRef, SlotValue } from '@metamask/ocap-kernel';
 import { describe, expect, it } from 'vitest';
diff --git a/packages/kernel-test/src/vats/async-generator-iterator-vat.ts b/packages/kernel-test/src/vats/async-generator-iterator-vat.ts
index 442d7c366..429af0588 100644
--- a/packages/kernel-test/src/vats/async-generator-iterator-vat.ts
+++ b/packages/kernel-test/src/vats/async-generator-iterator-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import { makeEventualIterator, makeExoGenerator } from '@ocap/remote-iterables';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/default/empty-vat.js b/packages/kernel-test/src/vats/default/empty-vat.js
index 023d344bd..5e89d711b 100644
--- a/packages/kernel-test/src/vats/default/empty-vat.js
+++ b/packages/kernel-test/src/vats/default/empty-vat.js
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for simple test vat.
diff --git a/packages/kernel-test/src/vats/default/sample-vat.js b/packages/kernel-test/src/vats/default/sample-vat.js
index 176516ee3..12a3c17e0 100644
--- a/packages/kernel-test/src/vats/default/sample-vat.js
+++ b/packages/kernel-test/src/vats/default/sample-vat.js
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for generic test vat.
diff --git a/packages/kernel-test/src/vats/discoverable-capability-vat.ts b/packages/kernel-test/src/vats/discoverable-capability-vat.ts
index e36bd3c22..d8945b3ad 100644
--- a/packages/kernel-test/src/vats/discoverable-capability-vat.ts
+++ b/packages/kernel-test/src/vats/discoverable-capability-vat.ts
@@ -1,5 +1,5 @@
-import { makeDiscoverableExo } from '@metamask/kernel-utils/discoverable';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDiscoverableExo } from '@metamask/kernel-exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for a vat that exports a discoverable exo capability.
diff --git a/packages/kernel-test/src/vats/endowment-fetch.ts b/packages/kernel-test/src/vats/endowment-fetch.ts
index 2eb8dcf53..e679c3255 100644
--- a/packages/kernel-test/src/vats/endowment-fetch.ts
+++ b/packages/kernel-test/src/vats/endowment-fetch.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/error-bootstrap-throw.ts b/packages/kernel-test/src/vats/error-bootstrap-throw.ts
index 86737ead7..d0a617565 100644
--- a/packages/kernel-test/src/vats/error-bootstrap-throw.ts
+++ b/packages/kernel-test/src/vats/error-bootstrap-throw.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 // eslint-disable-next-line no-console
 console.log('bootstrap throw');
diff --git a/packages/kernel-test/src/vats/error-bootstrap-uncaught-rejection.ts b/packages/kernel-test/src/vats/error-bootstrap-uncaught-rejection.ts
index 0e71c9539..f044dc062 100644
--- a/packages/kernel-test/src/vats/error-bootstrap-uncaught-rejection.ts
+++ b/packages/kernel-test/src/vats/error-bootstrap-uncaught-rejection.ts
@@ -1,5 +1,5 @@
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 // eslint-disable-next-line no-console
 console.log('bootstrap uncaught rejection');
diff --git a/packages/kernel-test/src/vats/error-build-uncaught-rejection.ts b/packages/kernel-test/src/vats/error-build-uncaught-rejection.ts
index 431921be2..4ec8e46a7 100644
--- a/packages/kernel-test/src/vats/error-build-uncaught-rejection.ts
+++ b/packages/kernel-test/src/vats/error-build-uncaught-rejection.ts
@@ -1,5 +1,5 @@
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 // eslint-disable-next-line no-console
 console.log('build uncaught rejection');
diff --git a/packages/kernel-test/src/vats/error-global-uncaught-rejection.ts b/packages/kernel-test/src/vats/error-global-uncaught-rejection.ts
index 2bf0df8ed..e5ffe4857 100644
--- a/packages/kernel-test/src/vats/error-global-uncaught-rejection.ts
+++ b/packages/kernel-test/src/vats/error-global-uncaught-rejection.ts
@@ -1,5 +1,5 @@
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 // eslint-disable-next-line no-console
 console.log('global uncaught rejection');
diff --git a/packages/kernel-test/src/vats/exo-vat.ts b/packages/kernel-test/src/vats/exo-vat.ts
index 680bdd558..b8d49baa8 100644
--- a/packages/kernel-test/src/vats/exo-vat.ts
+++ b/packages/kernel-test/src/vats/exo-vat.ts
@@ -1,7 +1,7 @@
 import { makeScalarMapStore, makeScalarSetStore } from '@agoric/store';
 import { makeExo, defineExoClass, defineExoClassKit } from '@endo/exo';
 import { M } from '@endo/patterns';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/exporter-vat.ts b/packages/kernel-test/src/vats/exporter-vat.ts
index 5c9dfc371..096aee85e 100644
--- a/packages/kernel-test/src/vats/exporter-vat.ts
+++ b/packages/kernel-test/src/vats/exporter-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/importer-vat.ts b/packages/kernel-test/src/vats/importer-vat.ts
index a5002b3cd..b8c02ce35 100644
--- a/packages/kernel-test/src/vats/importer-vat.ts
+++ b/packages/kernel-test/src/vats/importer-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/io-vat.ts b/packages/kernel-test/src/vats/io-vat.ts
index 04b582fde..9df0e1c4a 100644
--- a/packages/kernel-test/src/vats/io-vat.ts
+++ b/packages/kernel-test/src/vats/io-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/lms-queue-vat.ts b/packages/kernel-test/src/vats/lms-queue-vat.ts
index e7872f1a6..b77f0f131 100644
--- a/packages/kernel-test/src/vats/lms-queue-vat.ts
+++ b/packages/kernel-test/src/vats/lms-queue-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import { makeQueueService } from '@ocap/kernel-language-model-service/test-utils';
 import { makeExoGenerator } from '@ocap/remote-iterables';
 
diff --git a/packages/kernel-test/src/vats/lms-user-vat.ts b/packages/kernel-test/src/vats/lms-user-vat.ts
index 4a0c1b0e5..ace891463 100644
--- a/packages/kernel-test/src/vats/lms-user-vat.ts
+++ b/packages/kernel-test/src/vats/lms-user-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import { makeEventualIterator } from '@ocap/remote-iterables';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/logger-vat.ts b/packages/kernel-test/src/vats/logger-vat.ts
index 0d18040ed..26617e8b8 100644
--- a/packages/kernel-test/src/vats/logger-vat.ts
+++ b/packages/kernel-test/src/vats/logger-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { TestPowers } from '../test-powers.ts';
 
diff --git a/packages/kernel-test/src/vats/message-to-promise-vat.ts b/packages/kernel-test/src/vats/message-to-promise-vat.ts
index d919c4b75..a5b1f9451 100644
--- a/packages/kernel-test/src/vats/message-to-promise-vat.ts
+++ b/packages/kernel-test/src/vats/message-to-promise-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/monotonous-vat.ts b/packages/kernel-test/src/vats/monotonous-vat.ts
index 1d80c09b2..41486634e 100644
--- a/packages/kernel-test/src/vats/monotonous-vat.ts
+++ b/packages/kernel-test/src/vats/monotonous-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 /**
diff --git a/packages/kernel-test/src/vats/pass-result-promise-vat.ts b/packages/kernel-test/src/vats/pass-result-promise-vat.ts
index b4f05754e..2e67407ae 100644
--- a/packages/kernel-test/src/vats/pass-result-promise-vat.ts
+++ b/packages/kernel-test/src/vats/pass-result-promise-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/pass-result-vat.ts b/packages/kernel-test/src/vats/pass-result-vat.ts
index 0bfe1a34e..ebc7fac2d 100644
--- a/packages/kernel-test/src/vats/pass-result-vat.ts
+++ b/packages/kernel-test/src/vats/pass-result-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/persistence-coordinator-vat.ts b/packages/kernel-test/src/vats/persistence-coordinator-vat.ts
index 096ecb624..4721d0f39 100644
--- a/packages/kernel-test/src/vats/persistence-coordinator-vat.ts
+++ b/packages/kernel-test/src/vats/persistence-coordinator-vat.ts
@@ -1,6 +1,6 @@
 /* global harden */
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/persistence-counter-vat.ts b/packages/kernel-test/src/vats/persistence-counter-vat.ts
index 8daa099ad..6c2e983ea 100644
--- a/packages/kernel-test/src/vats/persistence-counter-vat.ts
+++ b/packages/kernel-test/src/vats/persistence-counter-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/persistence-worker-vat.ts b/packages/kernel-test/src/vats/persistence-worker-vat.ts
index 3c72ac588..e5b080ecd 100644
--- a/packages/kernel-test/src/vats/persistence-worker-vat.ts
+++ b/packages/kernel-test/src/vats/persistence-worker-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/powers-vat.ts b/packages/kernel-test/src/vats/powers-vat.ts
index 16bc305ac..e4ad32eb5 100644
--- a/packages/kernel-test/src/vats/powers-vat.ts
+++ b/packages/kernel-test/src/vats/powers-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for running a test of the vatstore.
diff --git a/packages/kernel-test/src/vats/promise-arg-vat.ts b/packages/kernel-test/src/vats/promise-arg-vat.ts
index 0c6bf2f18..aa7aa2fa3 100644
--- a/packages/kernel-test/src/vats/promise-arg-vat.ts
+++ b/packages/kernel-test/src/vats/promise-arg-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/promise-chain-vat.ts b/packages/kernel-test/src/vats/promise-chain-vat.ts
index cf5515dd9..26fb3bbd2 100644
--- a/packages/kernel-test/src/vats/promise-chain-vat.ts
+++ b/packages/kernel-test/src/vats/promise-chain-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/promise-crosswise-vat.ts b/packages/kernel-test/src/vats/promise-crosswise-vat.ts
index c9ad2a49f..b547d751a 100644
--- a/packages/kernel-test/src/vats/promise-crosswise-vat.ts
+++ b/packages/kernel-test/src/vats/promise-crosswise-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/promise-cycle-vat.ts b/packages/kernel-test/src/vats/promise-cycle-vat.ts
index a5461b5d9..00af2e0ee 100644
--- a/packages/kernel-test/src/vats/promise-cycle-vat.ts
+++ b/packages/kernel-test/src/vats/promise-cycle-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/promise-indirect-vat.ts b/packages/kernel-test/src/vats/promise-indirect-vat.ts
index db511ceef..a0cd9b060 100644
--- a/packages/kernel-test/src/vats/promise-indirect-vat.ts
+++ b/packages/kernel-test/src/vats/promise-indirect-vat.ts
@@ -1,6 +1,6 @@
 import { E } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/rejection-bootstrap.ts b/packages/kernel-test/src/vats/rejection-bootstrap.ts
index f943560be..0e18039ad 100644
--- a/packages/kernel-test/src/vats/rejection-bootstrap.ts
+++ b/packages/kernel-test/src/vats/rejection-bootstrap.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { TestPowers } from '../test-powers.ts';
 
diff --git a/packages/kernel-test/src/vats/rejection-rejector.ts b/packages/kernel-test/src/vats/rejection-rejector.ts
index f07eac6dc..469756e10 100644
--- a/packages/kernel-test/src/vats/rejection-rejector.ts
+++ b/packages/kernel-test/src/vats/rejection-rejector.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { TestPowers } from '../test-powers.ts';
 
diff --git a/packages/kernel-test/src/vats/remote-receiver-vat.ts b/packages/kernel-test/src/vats/remote-receiver-vat.ts
index aab1a5991..29f1232db 100644
--- a/packages/kernel-test/src/vats/remote-receiver-vat.ts
+++ b/packages/kernel-test/src/vats/remote-receiver-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { TestPowers } from '../test-powers.ts';
 
diff --git a/packages/kernel-test/src/vats/remote-sender-vat.ts b/packages/kernel-test/src/vats/remote-sender-vat.ts
index 7e54ffde6..99bdf8b01 100644
--- a/packages/kernel-test/src/vats/remote-sender-vat.ts
+++ b/packages/kernel-test/src/vats/remote-sender-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { TestPowers } from '../test-powers.ts';
 
diff --git a/packages/kernel-test/src/vats/resolve-pipelined-vat.ts b/packages/kernel-test/src/vats/resolve-pipelined-vat.ts
index 3a9d11fe9..274290c8e 100644
--- a/packages/kernel-test/src/vats/resolve-pipelined-vat.ts
+++ b/packages/kernel-test/src/vats/resolve-pipelined-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/resume-vat.ts b/packages/kernel-test/src/vats/resume-vat.ts
index 070e9b123..942b4539e 100644
--- a/packages/kernel-test/src/vats/resume-vat.ts
+++ b/packages/kernel-test/src/vats/resume-vat.ts
@@ -1,6 +1,6 @@
 /* global harden */
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 import { unwrapTestLogger } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/service-vat.ts b/packages/kernel-test/src/vats/service-vat.ts
index 4e62581a5..5a79900f8 100644
--- a/packages/kernel-test/src/vats/service-vat.ts
+++ b/packages/kernel-test/src/vats/service-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import { unwrapTestLogger } from '../test-powers.ts';
 import type { TestPowers } from '../test-powers.ts';
diff --git a/packages/kernel-test/src/vats/stepper-upper-vat.ts b/packages/kernel-test/src/vats/stepper-upper-vat.ts
index 158108935..fa393d8d4 100644
--- a/packages/kernel-test/src/vats/stepper-upper-vat.ts
+++ b/packages/kernel-test/src/vats/stepper-upper-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 /**
diff --git a/packages/kernel-test/src/vats/subcluster-vat.ts b/packages/kernel-test/src/vats/subcluster-vat.ts
index 894d922a5..b0bacfafe 100644
--- a/packages/kernel-test/src/vats/subcluster-vat.ts
+++ b/packages/kernel-test/src/vats/subcluster-vat.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for testing subcluster functionality.
diff --git a/packages/kernel-test/src/vats/vatstore-vat.ts b/packages/kernel-test/src/vats/vatstore-vat.ts
index a77907f8d..edc3ac2dc 100644
--- a/packages/kernel-test/src/vats/vatstore-vat.ts
+++ b/packages/kernel-test/src/vats/vatstore-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Baggage } from '@metamask/ocap-kernel';
 
 type BaggageWithDelete = Baggage & {
diff --git a/packages/kernel-test/tsconfig.json b/packages/kernel-test/tsconfig.json
index bc2bca875..b2ff34c69 100644
--- a/packages/kernel-test/tsconfig.json
+++ b/packages/kernel-test/tsconfig.json
@@ -8,6 +8,7 @@
     "types": ["vitest"]
   },
   "references": [
+    { "path": "../kernel-exo" },
     { "path": "../kernel-agents" },
     { "path": "../kernel-store" },
     { "path": "../kernel-utils" },
diff --git a/packages/kernel-utils/package.json b/packages/kernel-utils/package.json
index aa637b250..eea1b3ebd 100644
--- a/packages/kernel-utils/package.json
+++ b/packages/kernel-utils/package.json
@@ -29,26 +29,6 @@
         "default": "./dist/index.cjs"
       }
     },
-    "./exo": {
-      "import": {
-        "types": "./dist/exo.d.mts",
-        "default": "./dist/exo.mjs"
-      },
-      "require": {
-        "types": "./dist/exo.d.cts",
-        "default": "./dist/exo.cjs"
-      }
-    },
-    "./discoverable": {
-      "import": {
-        "types": "./dist/discoverable.d.mts",
-        "default": "./dist/discoverable.mjs"
-      },
-      "require": {
-        "types": "./dist/discoverable.d.cts",
-        "default": "./dist/discoverable.cjs"
-      }
-    },
     "./libp2p": {
       "import": {
         "types": "./dist/libp2p-relay.d.mts",
@@ -91,8 +71,6 @@
     "@chainsafe/libp2p-yamux": "patch:@chainsafe/libp2p-yamux@npm%3A7.0.4#~/.yarn/patches/@chainsafe-libp2p-yamux-npm-7.0.4-284c2f6812.patch",
     "@endo/captp": "^4.4.8",
     "@endo/errors": "^1.2.13",
-    "@endo/exo": "^1.5.12",
-    "@endo/patterns": "^1.7.0",
     "@endo/promise-kit": "^1.1.13",
     "@libp2p/autonat": "2.0.38",
     "@libp2p/circuit-relay-v2": "3.2.24",
diff --git a/packages/kernel-utils/src/index.test.ts b/packages/kernel-utils/src/index.test.ts
index 7533cd072..0e05591e2 100644
--- a/packages/kernel-utils/src/index.test.ts
+++ b/packages/kernel-utils/src/index.test.ts
@@ -23,9 +23,6 @@ describe('index', () => {
       'isTypedObject',
       'isVatBundle',
       'makeCounter',
-      'makeDefaultExo',
-      'makeDefaultInterface',
-      'makeDiscoverableExo',
       'mergeDisjointRecords',
       'retry',
       'retryWithBackoff',
diff --git a/packages/kernel-utils/src/index.ts b/packages/kernel-utils/src/index.ts
index 09d85af54..f8c320d97 100644
--- a/packages/kernel-utils/src/index.ts
+++ b/packages/kernel-utils/src/index.ts
@@ -1,7 +1,3 @@
-export { makeDefaultInterface, makeDefaultExo } from './exo.ts';
-export { makeDiscoverableExo } from './discoverable.ts';
-export type { DiscoverableExo } from './discoverable.ts';
-export type { JsonSchema, MethodSchema } from './schema.ts';
 export { fetchValidatedJson } from './fetchValidatedJson.ts';
 export { abortableDelay, delay, ifDefined, makeCounter } from './misc.ts';
 export { stringify } from './stringify.ts';
diff --git a/packages/nodejs/package.json b/packages/nodejs/package.json
index 5789d66e5..7cd121d04 100644
--- a/packages/nodejs/package.json
+++ b/packages/nodejs/package.json
@@ -65,6 +65,7 @@
     "@libp2p/interface": "2.11.0",
     "@libp2p/tcp": "10.1.19",
     "@libp2p/webrtc": "5.2.24",
+    "@metamask/kernel-exo": "workspace:^",
     "@metamask/kernel-rpc-methods": "workspace:^",
     "@metamask/kernel-shims": "workspace:^",
     "@metamask/kernel-store": "workspace:^",
diff --git a/packages/nodejs/test/vats/monotonous-vat.js b/packages/nodejs/test/vats/monotonous-vat.js
index c1032cc86..a0440563d 100644
--- a/packages/nodejs/test/vats/monotonous-vat.js
+++ b/packages/nodejs/test/vats/monotonous-vat.js
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Vat providing Monotony As A Service (MaaS). It just keeps relentlessly counting up. It's very boring.
diff --git a/packages/nodejs/test/vats/remote-vat.js b/packages/nodejs/test/vats/remote-vat.js
index 516407321..68c19bdb6 100644
--- a/packages/nodejs/test/vats/remote-vat.js
+++ b/packages/nodejs/test/vats/remote-vat.js
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for a vat that supports remote communication testing.
diff --git a/packages/nodejs/test/vats/sample-vat.js b/packages/nodejs/test/vats/sample-vat.js
index f8beb15a0..95ef9ff14 100644
--- a/packages/nodejs/test/vats/sample-vat.js
+++ b/packages/nodejs/test/vats/sample-vat.js
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for a sample vat.
diff --git a/packages/nodejs/test/vats/stepper-upper-vat.js b/packages/nodejs/test/vats/stepper-upper-vat.js
index 23308f74e..9556059d4 100644
--- a/packages/nodejs/test/vats/stepper-upper-vat.js
+++ b/packages/nodejs/test/vats/stepper-upper-vat.js
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Build function for MaaS consumer.
diff --git a/packages/nodejs/test/vats/system-vat.ts b/packages/nodejs/test/vats/system-vat.ts
index 7c5ece156..d93fa8068 100644
--- a/packages/nodejs/test/vats/system-vat.ts
+++ b/packages/nodejs/test/vats/system-vat.ts
@@ -1,5 +1,5 @@
 import { E } from '@endo/eventual-send';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type {
   Baggage,
   ClusterConfig,
diff --git a/packages/nodejs/tsconfig.build.json b/packages/nodejs/tsconfig.build.json
index e3ad4d2b0..aed86de28 100644
--- a/packages/nodejs/tsconfig.build.json
+++ b/packages/nodejs/tsconfig.build.json
@@ -8,6 +8,7 @@
     "types": ["node", "ses"]
   },
   "references": [
+    { "path": "../kernel-exo/tsconfig.build.json" },
     { "path": "../kernel-platforms/tsconfig.build.json" },
     { "path": "../ocap-kernel/tsconfig.build.json" },
     { "path": "../logger/tsconfig.build.json" },
diff --git a/packages/nodejs/tsconfig.json b/packages/nodejs/tsconfig.json
index 23136c051..a8e362419 100644
--- a/packages/nodejs/tsconfig.json
+++ b/packages/nodejs/tsconfig.json
@@ -8,6 +8,7 @@
     "types": ["node", "ses", "vitest"]
   },
   "references": [
+    { "path": "../kernel-exo" },
     { "path": "../kernel-platforms" },
     { "path": "../ocap-kernel" },
     { "path": "../logger" },
diff --git a/packages/ocap-kernel/package.json b/packages/ocap-kernel/package.json
index 1ac119bbe..d05a433a3 100644
--- a/packages/ocap-kernel/package.json
+++ b/packages/ocap-kernel/package.json
@@ -86,6 +86,7 @@
     "@libp2p/websockets": "9.2.19",
     "@libp2p/webtransport": "5.0.51",
     "@metamask/kernel-errors": "workspace:^",
+    "@metamask/kernel-exo": "workspace:^",
     "@metamask/kernel-rpc-methods": "workspace:^",
     "@metamask/kernel-store": "workspace:^",
     "@metamask/kernel-utils": "workspace:^",
diff --git a/packages/ocap-kernel/src/io/io-service.ts b/packages/ocap-kernel/src/io/io-service.ts
index 0c7d86468..7c4fb94d6 100644
--- a/packages/ocap-kernel/src/io/io-service.ts
+++ b/packages/ocap-kernel/src/io/io-service.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { IOChannel } from './types.ts';
 import type { IOConfig } from '../types.ts';
diff --git a/packages/ocap-kernel/src/kernel-facet.ts b/packages/ocap-kernel/src/kernel-facet.ts
index 79ecbe443..cdba91a68 100644
--- a/packages/ocap-kernel/src/kernel-facet.ts
+++ b/packages/ocap-kernel/src/kernel-facet.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { Kernel } from './Kernel.ts';
 
diff --git a/packages/ocap-kernel/src/liveslots/kernel-marshal.ts b/packages/ocap-kernel/src/liveslots/kernel-marshal.ts
index a023a9445..30ba6aedc 100644
--- a/packages/ocap-kernel/src/liveslots/kernel-marshal.ts
+++ b/packages/ocap-kernel/src/liveslots/kernel-marshal.ts
@@ -2,7 +2,7 @@ import { assert, Fail } from '@endo/errors';
 import { passStyleOf, makeMarshal } from '@endo/marshal';
 import type { CapData } from '@endo/marshal';
 import type { Passable } from '@endo/pass-style';
-import { makeDefaultExo } from '@metamask/kernel-utils';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 import type { KRef } from '../types.ts';
 
diff --git a/packages/ocap-kernel/tsconfig.build.json b/packages/ocap-kernel/tsconfig.build.json
index fbda55b3a..f219710e8 100644
--- a/packages/ocap-kernel/tsconfig.build.json
+++ b/packages/ocap-kernel/tsconfig.build.json
@@ -8,6 +8,7 @@
     "types": ["ses"]
   },
   "references": [
+    { "path": "../kernel-exo/tsconfig.build.json" },
     { "path": "../kernel-errors/tsconfig.build.json" },
     { "path": "../kernel-rpc-methods/tsconfig.build.json" },
     { "path": "../streams/tsconfig.build.json" },
diff --git a/packages/ocap-kernel/tsconfig.json b/packages/ocap-kernel/tsconfig.json
index d1a3ce3c9..7583c0b0a 100644
--- a/packages/ocap-kernel/tsconfig.json
+++ b/packages/ocap-kernel/tsconfig.json
@@ -4,6 +4,7 @@
     "baseUrl": "./"
   },
   "references": [
+    { "path": "../kernel-exo" },
     { "path": "../kernel-errors" },
     { "path": "../logger" },
     { "path": "../kernel-rpc-methods" },
diff --git a/packages/omnium-gatherum/package.json b/packages/omnium-gatherum/package.json
index 390e371e9..572054af5 100644
--- a/packages/omnium-gatherum/package.json
+++ b/packages/omnium-gatherum/package.json
@@ -48,6 +48,7 @@
     "@endo/exo": "^1.5.12",
     "@endo/promise-kit": "^1.1.13",
     "@metamask/kernel-browser-runtime": "workspace:^",
+    "@metamask/kernel-exo": "workspace:^",
     "@metamask/kernel-shims": "workspace:^",
     "@metamask/kernel-ui": "workspace:^",
     "@metamask/kernel-utils": "workspace:^",
diff --git a/packages/omnium-gatherum/src/caplets/echo/echo-caplet.js b/packages/omnium-gatherum/src/caplets/echo/echo-caplet.js
index c0d0ee31c..008859e35 100644
--- a/packages/omnium-gatherum/src/caplets/echo/echo-caplet.js
+++ b/packages/omnium-gatherum/src/caplets/echo/echo-caplet.js
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 
 /**
  * Log a message with caplet prefix.
diff --git a/packages/omnium-gatherum/src/controllers/base-controller.test.ts b/packages/omnium-gatherum/src/controllers/base-controller.test.ts
index b623be8c5..cb10069ee 100644
--- a/packages/omnium-gatherum/src/controllers/base-controller.test.ts
+++ b/packages/omnium-gatherum/src/controllers/base-controller.test.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Logger } from '@metamask/logger';
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 
diff --git a/packages/omnium-gatherum/src/controllers/caplet/caplet-controller.ts b/packages/omnium-gatherum/src/controllers/caplet/caplet-controller.ts
index 90b1c1076..ad2603ba9 100644
--- a/packages/omnium-gatherum/src/controllers/caplet/caplet-controller.ts
+++ b/packages/omnium-gatherum/src/controllers/caplet/caplet-controller.ts
@@ -1,4 +1,4 @@
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import type { Logger } from '@metamask/logger';
 import type {
   ClusterConfig,
diff --git a/packages/omnium-gatherum/src/vats/controller-vat.ts b/packages/omnium-gatherum/src/vats/controller-vat.ts
index d45b1d38c..052866d72 100644
--- a/packages/omnium-gatherum/src/vats/controller-vat.ts
+++ b/packages/omnium-gatherum/src/vats/controller-vat.ts
@@ -2,7 +2,7 @@ import { E } from '@endo/eventual-send';
 import type { ERef } from '@endo/eventual-send';
 import { makePromiseKit } from '@endo/promise-kit';
 import type { PromiseKit } from '@endo/promise-kit';
-import { makeDefaultExo } from '@metamask/kernel-utils/exo';
+import { makeDefaultExo } from '@metamask/kernel-exo';
 import { Logger } from '@metamask/logger';
 import type {
   Baggage,
diff --git a/packages/omnium-gatherum/tsconfig.build.json b/packages/omnium-gatherum/tsconfig.build.json
index d7b547202..781130119 100644
--- a/packages/omnium-gatherum/tsconfig.build.json
+++ b/packages/omnium-gatherum/tsconfig.build.json
@@ -12,6 +12,7 @@
     "types": ["chrome", "ses", "react-dom"]
   },
   "references": [
+    { "path": "../kernel-exo/tsconfig.build.json" },
     { "path": "../kernel-browser-runtime/tsconfig.build.json" },
     { "path": "../kernel-rpc-methods/tsconfig.build.json" },
     { "path": "../kernel-ui/tsconfig.build.json" },
diff --git a/packages/omnium-gatherum/tsconfig.json b/packages/omnium-gatherum/tsconfig.json
index 83fedfd08..2157d2d7b 100644
--- a/packages/omnium-gatherum/tsconfig.json
+++ b/packages/omnium-gatherum/tsconfig.json
@@ -11,6 +11,7 @@
     "types": ["chrome", "ses", "vitest", "@playwright/test", "react-dom"]
   },
   "references": [
+    { "path": "../kernel-exo" },
     { "path": "../kernel-browser-runtime" },
     { "path": "../kernel-rpc-methods" },
     { "path": "../kernel-shims" },
diff --git a/tsconfig.json b/tsconfig.json
index c7c624374..7bfef4de3 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,6 +18,7 @@
     { "path": "./packages/extension" },
     { "path": "./packages/kernel-agents" },
     { "path": "./packages/kernel-browser-runtime" },
+    { "path": "./packages/kernel-exo" },
     { "path": "./packages/kernel-errors" },
     { "path": "./packages/kernel-language-model-service" },
     { "path": "./packages/kernel-platforms" },
diff --git a/yarn.lock b/yarn.lock
index 80dd1b264..319569943 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2470,6 +2470,46 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@metamask/kernel-exo@workspace:^, @metamask/kernel-exo@workspace:packages/kernel-exo":
+  version: 0.0.0-use.local
+  resolution: "@metamask/kernel-exo@workspace:packages/kernel-exo"
+  dependencies:
+    "@arethetypeswrong/cli": "npm:^0.17.4"
+    "@endo/exo": "npm:^1.5.12"
+    "@endo/patterns": "npm:^1.7.0"
+    "@metamask/auto-changelog": "npm:^5.3.0"
+    "@metamask/eslint-config": "npm:^15.0.0"
+    "@metamask/eslint-config-nodejs": "npm:^15.0.0"
+    "@metamask/eslint-config-typescript": "npm:^15.0.0"
+    "@metamask/kernel-utils": "workspace:^"
+    "@ocap/repo-tools": "workspace:^"
+    "@ts-bridge/cli": "npm:^0.6.3"
+    "@ts-bridge/shims": "npm:^0.1.1"
+    "@typescript-eslint/eslint-plugin": "npm:^8.29.0"
+    "@typescript-eslint/parser": "npm:^8.29.0"
+    "@typescript-eslint/utils": "npm:^8.29.0"
+    "@vitest/eslint-plugin": "npm:^1.6.5"
+    depcheck: "npm:^1.4.7"
+    eslint: "npm:^9.23.0"
+    eslint-config-prettier: "npm:^10.1.1"
+    eslint-import-resolver-typescript: "npm:^4.3.1"
+    eslint-plugin-import-x: "npm:^4.10.0"
+    eslint-plugin-jsdoc: "npm:^50.6.9"
+    eslint-plugin-n: "npm:^17.17.0"
+    eslint-plugin-prettier: "npm:^5.2.6"
+    eslint-plugin-promise: "npm:^7.2.1"
+    prettier: "npm:^3.5.3"
+    rimraf: "npm:^6.0.1"
+    ses: "npm:^1.14.0"
+    turbo: "npm:^2.5.6"
+    typedoc: "npm:^0.28.1"
+    typescript: "npm:~5.8.2"
+    typescript-eslint: "npm:^8.29.0"
+    vite: "npm:^7.3.0"
+    vitest: "npm:^4.0.16"
+  languageName: unknown
+  linkType: soft
+
 "@metamask/kernel-rpc-methods@workspace:^, @metamask/kernel-rpc-methods@workspace:packages/kernel-rpc-methods":
   version: 0.0.0-use.local
   resolution: "@metamask/kernel-rpc-methods@workspace:packages/kernel-rpc-methods"
@@ -2662,8 +2702,6 @@ __metadata:
     "@chainsafe/libp2p-yamux": "patch:@chainsafe/libp2p-yamux@npm%3A7.0.4#~/.yarn/patches/@chainsafe-libp2p-yamux-npm-7.0.4-284c2f6812.patch"
     "@endo/captp": "npm:^4.4.8"
     "@endo/errors": "npm:^1.2.13"
-    "@endo/exo": "npm:^1.5.12"
-    "@endo/patterns": "npm:^1.7.0"
     "@endo/promise-kit": "npm:^1.1.13"
     "@libp2p/autonat": "npm:2.0.38"
     "@libp2p/circuit-relay-v2": "npm:3.2.24"
@@ -2819,6 +2857,7 @@ __metadata:
     "@metamask/eslint-config-nodejs": "npm:^15.0.0"
     "@metamask/eslint-config-typescript": "npm:^15.0.0"
     "@metamask/kernel-errors": "workspace:^"
+    "@metamask/kernel-exo": "workspace:^"
     "@metamask/kernel-rpc-methods": "workspace:^"
     "@metamask/kernel-store": "workspace:^"
     "@metamask/kernel-utils": "workspace:^"
@@ -3654,6 +3693,7 @@ __metadata:
     "@metamask/eslint-config-nodejs": "npm:^15.0.0"
     "@metamask/eslint-config-typescript": "npm:^15.0.0"
     "@metamask/kernel-errors": "workspace:^"
+    "@metamask/kernel-exo": "workspace:^"
     "@metamask/kernel-utils": "workspace:^"
     "@metamask/logger": "workspace:^"
     "@ocap/kernel-language-model-service": "workspace:^"
@@ -3821,6 +3861,7 @@ __metadata:
     "@metamask/eslint-config": "npm:^15.0.0"
     "@metamask/eslint-config-nodejs": "npm:^15.0.0"
     "@metamask/eslint-config-typescript": "npm:^15.0.0"
+    "@metamask/kernel-exo": "workspace:^"
     "@metamask/kernel-shims": "workspace:^"
     "@metamask/kernel-store": "workspace:^"
     "@metamask/kernel-utils": "workspace:^"
@@ -3970,6 +4011,7 @@ __metadata:
     "@metamask/eslint-config": "npm:^15.0.0"
     "@metamask/eslint-config-nodejs": "npm:^15.0.0"
     "@metamask/eslint-config-typescript": "npm:^15.0.0"
+    "@metamask/kernel-exo": "workspace:^"
     "@metamask/kernel-rpc-methods": "workspace:^"
     "@metamask/kernel-shims": "workspace:^"
     "@metamask/kernel-store": "workspace:^"
@@ -4021,6 +4063,7 @@ __metadata:
     "@metamask/eslint-config-nodejs": "npm:^15.0.0"
     "@metamask/eslint-config-typescript": "npm:^15.0.0"
     "@metamask/kernel-browser-runtime": "workspace:^"
+    "@metamask/kernel-exo": "workspace:^"
     "@metamask/kernel-shims": "workspace:^"
     "@metamask/kernel-ui": "workspace:^"
     "@metamask/kernel-utils": "workspace:^"