diff --git a/package.json b/package.json
index f9fb6cd9..1ce7e8b4 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,10 @@
       "import": "./dist/src/index.js",
       "types": "./dist/src/index.d.ts"
     },
+    "./artifacts": {
+      "import": "./dist/src/artifacts.js",
+      "types": "./dist/src/artifacts.d.ts"
+    },
     "./metro": {
       "import": "./dist/src/metro.js",
       "types": "./dist/src/metro.d.ts"
@@ -20,9 +24,21 @@
       "import": "./dist/src/remote-config.js",
       "types": "./dist/src/remote-config.d.ts"
     },
+    "./install-source": {
+      "import": "./dist/src/install-source.js",
+      "types": "./dist/src/install-source.d.ts"
+    },
     "./contracts": {
       "import": "./dist/src/contracts.js",
       "types": "./dist/src/contracts.d.ts"
+    },
+    "./selectors": {
+      "import": "./dist/src/selectors.js",
+      "types": "./dist/src/selectors.d.ts"
+    },
+    "./finders": {
+      "import": "./dist/src/finders.js",
+      "types": "./dist/src/finders.d.ts"
     }
   },
   "engines": {
diff --git a/rslib.config.ts b/rslib.config.ts
index 73f18bdd..9be0f798 100644
--- a/rslib.config.ts
+++ b/rslib.config.ts
@@ -17,9 +17,13 @@ export default defineConfig({
       source: {
         entry: {
           index: 'src/index.ts',
+          artifacts: 'src/artifacts.ts',
           metro: 'src/metro.ts',
           'remote-config': 'src/remote-config.ts',
+          'install-source': 'src/install-source.ts',
           contracts: 'src/contracts.ts',
+          selectors: 'src/selectors.ts',
+          finders: 'src/finders.ts',
         },
         tsconfigPath: 'tsconfig.lib.json',
       },
diff --git a/src/__tests__/artifacts-public.test.ts b/src/__tests__/artifacts-public.test.ts
new file mode 100644
index 00000000..95706ef9
--- /dev/null
+++ b/src/__tests__/artifacts-public.test.ts
@@ -0,0 +1,11 @@
+import assert from 'node:assert/strict';
+import { test } from 'vitest';
+
+import { resolveAndroidArchivePackageName } from '../artifacts.ts';
+
+const resolver: (archivePath: string) => Promise<string | undefined> =
+  resolveAndroidArchivePackageName;
+
+test('package subpath exports android archive package resolver', () => {
+  assert.equal(typeof resolver, 'function');
+});
diff --git a/src/__tests__/finders-public.test.ts b/src/__tests__/finders-public.test.ts
new file mode 100644
index 00000000..becaa3fe
--- /dev/null
+++ b/src/__tests__/finders-public.test.ts
@@ -0,0 +1,36 @@
+import assert from 'node:assert/strict';
+import { test } from 'vitest';
+import {
+  findBestMatchesByLocator,
+  normalizeRole,
+  normalizeText,
+  parseFindArgs,
+} from '../finders.ts';
+import type { SnapshotNode } from '../utils/snapshot.ts';
+
+function makeNode(ref: string, label?: string): SnapshotNode {
+  return {
+    index: Number(ref.replace('e', '')) || 0,
+    ref,
+    type: 'XCUIElementTypeButton',
+    label,
+  };
+}
+
+test('public finders entrypoint re-exports pure helpers', () => {
+  const nodes: SnapshotNode[] = [makeNode('e1', 'Continue')];
+
+  const parsed = parseFindArgs(['label', 'Continue', 'click']);
+  const best = findBestMatchesByLocator(nodes, 'label', 'Continue');
+  const requireRectLegacy = findBestMatchesByLocator(nodes, 'label', 'Continue', true);
+  const requireRectOptions = findBestMatchesByLocator(nodes, 'label', 'Continue', {
+    requireRect: true,
+  });
+
+  assert.equal(normalizeText('  Continue\nNow  '), 'continue now');
+  assert.equal(normalizeRole('XCUIElementTypeApplication.XCUIElementTypeButton'), 'button');
+  assert.equal(parsed.action, 'click');
+  assert.equal(best.matches.length, 1);
+  assert.equal(requireRectLegacy.matches.length, 0);
+  assert.equal(requireRectOptions.matches.length, 0);
+});
diff --git a/src/__tests__/install-source-public.test.ts b/src/__tests__/install-source-public.test.ts
new file mode 100644
index 00000000..8320a4d6
--- /dev/null
+++ b/src/__tests__/install-source-public.test.ts
@@ -0,0 +1,19 @@
+import assert from 'node:assert/strict';
+import { test } from 'vitest';
+
+import {
+  ARCHIVE_EXTENSIONS,
+  isTrustedInstallSourceUrl,
+  materializeInstallablePath,
+  validateDownloadSourceUrl,
+} from '../install-source.ts';
+
+test('public install-source entrypoint re-exports pure helpers', () => {
+  assert.deepEqual(ARCHIVE_EXTENSIONS, ['.zip', '.tar', '.tar.gz', '.tgz']);
+  assert.equal(
+    isTrustedInstallSourceUrl('https://api.github.com/repos/acme/app/actions/artifacts/1/zip'),
+    true,
+  );
+  assert.equal(typeof materializeInstallablePath, 'function');
+  assert.equal(typeof validateDownloadSourceUrl, 'function');
+});
diff --git a/src/__tests__/selectors-public.test.ts b/src/__tests__/selectors-public.test.ts
new file mode 100644
index 00000000..832908b4
--- /dev/null
+++ b/src/__tests__/selectors-public.test.ts
@@ -0,0 +1,70 @@
+import assert from 'node:assert/strict';
+import { test } from 'vitest';
+import {
+  findSelectorChainMatch,
+  formatSelectorFailure,
+  isNodeEditable,
+  isNodeVisible,
+  isSelectorToken,
+  parseSelectorChain,
+  resolveSelectorChain,
+  tryParseSelectorChain,
+  type Selector,
+  type SelectorChain,
+  type SelectorDiagnostics,
+  type SelectorResolution,
+} from '../selectors.ts';
+import type { SnapshotNode } from '../utils/snapshot.ts';
+
+const nodes: SnapshotNode[] = [
+  {
+    ref: 'e1',
+    index: 0,
+    type: 'android.widget.Button',
+    label: 'Continue',
+    rect: { x: 0, y: 0, width: 120, height: 48 },
+    enabled: true,
+  },
+  {
+    ref: 'e2',
+    index: 1,
+    type: 'android.widget.EditText',
+    label: 'Email',
+    rect: { x: 0, y: 64, width: 200, height: 48 },
+    enabled: true,
+  },
+];
+
+test('public selector subpath exposes platform-aware matching helpers', () => {
+  const chain: SelectorChain = parseSelectorChain('role=button label="Continue" visible=true');
+  const firstSelector: Selector = chain.selectors[0];
+  assert.equal(firstSelector.raw, 'role=button label="Continue" visible=true');
+  assert.equal(tryParseSelectorChain(chain.raw)?.raw, chain.raw);
+  assert.equal(isSelectorToken('visible=true'), true);
+
+  const match = findSelectorChainMatch(nodes, chain, {
+    platform: 'android',
+    requireRect: true,
+  });
+  assert.ok(match);
+  assert.equal(match.matches, 1);
+
+  const resolved: SelectorResolution | null = resolveSelectorChain(nodes, chain, {
+    platform: 'android',
+    requireRect: true,
+  });
+  assert.equal(resolved?.node.ref, 'e1');
+
+  assert.equal(isNodeVisible(nodes[0]), true);
+  assert.equal(isNodeEditable(nodes[1], 'android'), true);
+});
+
+test('public selector diagnostics format failures', () => {
+  const chain = parseSelectorChain('label=Missing');
+  const diagnostics: SelectorDiagnostics[] = [{ selector: 'label=Missing', matches: 0 }];
+
+  assert.equal(
+    formatSelectorFailure(chain, diagnostics, { unique: false }),
+    'Selector did not match (label=Missing -> 0)',
+  );
+});
diff --git a/src/artifacts.ts b/src/artifacts.ts
new file mode 100644
index 00000000..34ed3c32
--- /dev/null
+++ b/src/artifacts.ts
@@ -0,0 +1 @@
+export { resolveAndroidArchivePackageName } from './platforms/android/manifest.ts';
diff --git a/src/finders.ts b/src/finders.ts
new file mode 100644
index 00000000..b08a054f
--- /dev/null
+++ b/src/finders.ts
@@ -0,0 +1,23 @@
+export type { FindLocator } from './utils/finders.ts';
+export type { SnapshotNode } from './utils/snapshot.ts';
+export { normalizeRole, normalizeText, parseFindArgs } from './utils/finders.ts';
+
+import {
+  findBestMatchesByLocator as findBestMatchesByLocatorInternal,
+  type FindLocator,
+} from './utils/finders.ts';
+import type { SnapshotNode } from './utils/snapshot.ts';
+
+export type FindMatchOptions = {
+  requireRect?: boolean;
+};
+
+export function findBestMatchesByLocator(
+  nodes: SnapshotNode[],
+  locator: FindLocator,
+  query: string,
+  options?: boolean | FindMatchOptions,
+) {
+  const matchOptions = typeof options === 'boolean' ? { requireRect: options } : options;
+  return findBestMatchesByLocatorInternal(nodes, locator, query, matchOptions);
+}
diff --git a/src/install-source.ts b/src/install-source.ts
new file mode 100644
index 00000000..b464b411
--- /dev/null
+++ b/src/install-source.ts
@@ -0,0 +1,13 @@
+export {
+  ARCHIVE_EXTENSIONS,
+  isBlockedIpAddress,
+  isBlockedSourceHostname,
+  isTrustedInstallSourceUrl,
+  materializeInstallablePath,
+  validateDownloadSourceUrl,
+} from './platforms/install-source.ts';
+
+export type {
+  MaterializeInstallSource,
+  MaterializedInstallable,
+} from './platforms/install-source.ts';
diff --git a/src/selectors.ts b/src/selectors.ts
new file mode 100644
index 00000000..0169886e
--- /dev/null
+++ b/src/selectors.ts
@@ -0,0 +1,18 @@
+export type {
+  Selector,
+  SelectorChain,
+  SelectorDiagnostics,
+  SelectorResolution,
+} from './daemon/selectors.ts';
+export type { SnapshotNode } from './utils/snapshot.ts';
+
+export {
+  findSelectorChainMatch,
+  formatSelectorFailure,
+  isNodeEditable,
+  isNodeVisible,
+  isSelectorToken,
+  parseSelectorChain,
+  resolveSelectorChain,
+  tryParseSelectorChain,
+} from './daemon/selectors.ts';
diff --git a/website/docs/docs/client-api.md b/website/docs/docs/client-api.md
index 28750dc9..f8072113 100644
--- a/website/docs/docs/client-api.md
+++ b/website/docs/docs/client-api.md
@@ -23,6 +23,32 @@ Public subpath API exposed for Node consumers:
   - types: `RemoteConfigProfile`, `RemoteConfigProfileOptions`, `ResolvedRemoteConfigProfile`
 - `agent-device/contracts`
   - types: `SessionRuntimeHints`, `DaemonInstallSource`, `DaemonLockPolicy`, `DaemonRequestMeta`, `DaemonRequest`, `DaemonArtifact`, `DaemonResponseData`, `DaemonError`, `DaemonResponse`
+- `agent-device/selectors`
+  - `parseSelectorChain(expression)`
+  - `tryParseSelectorChain(expression)`
+  - `resolveSelectorChain(nodes, chain, options)`
+  - `findSelectorChainMatch(nodes, chain, options)`
+  - `formatSelectorFailure(chain, diagnostics, options)`
+  - `isNodeVisible(node)`
+  - `isSelectorToken(token)`
+  - `isNodeEditable(node, platform)`
+  - types: `Selector`, `SelectorChain`, `SelectorDiagnostics`, `SelectorResolution`, `SnapshotNode`
+- `agent-device/finders`
+  - `findBestMatchesByLocator(nodes, locator, query, requireRectOrOptions)`
+  - `normalizeRole(value)`
+  - `normalizeText(value)`
+  - `parseFindArgs(args)`
+  - types: `FindLocator`, `FindMatchOptions`, `SnapshotNode`
+- `agent-device/install-source`
+  - `ARCHIVE_EXTENSIONS`
+  - `isBlockedIpAddress(address)`
+  - `isBlockedSourceHostname(hostname)`
+  - `isTrustedInstallSourceUrl(sourceUrl)`
+  - `materializeInstallablePath(options)`
+  - `validateDownloadSourceUrl(url)`
+  - types: `MaterializeInstallSource`, `MaterializedInstallable`
+- `agent-device/artifacts`
+  - `resolveAndroidArchivePackageName(archivePath)`
 
 ## Basic usage
 
@@ -189,3 +215,22 @@ await stopMetroTunnel({
 ```
 
 Use `agent-device/remote-config` for profile loading and path resolution, `agent-device/metro` for Metro preparation and tunnel lifecycle, and `agent-device/contracts` when a server consumer needs daemon request or runtime contract types.
+
+## Selector helpers
+
+Use `agent-device/selectors` when a remote daemon or bridge needs to parse and match selector expressions without deep-importing daemon internals. Matching is platform-aware because role normalization and editability checks differ by backend.
+
+```ts
+import { findSelectorChainMatch, parseSelectorChain } from 'agent-device/selectors';
+
+const chain = parseSelectorChain('role=button label="Continue" visible=true');
+
+const match = findSelectorChainMatch(snapshot.nodes, chain, {
+  platform: 'android',
+  requireRect: true,
+});
+
+if (!match) {
+  // Build a daemon-shaped error with formatSelectorFailure(...) if needed.
+}
+```