diff --git a/SHARED.md b/SHARED.md
index 6802fa2..94deb4c 100644
--- a/SHARED.md
+++ b/SHARED.md
@@ -557,6 +557,13 @@ is for):
 | causius     |             4 |           1 |              0 |             0 |                   0 |
 | diplodoctor |             2 |           1 |              0 |             0 |                   0 |
 
+The audit also reports `mutedChats` (2026-11-11): a file that renders chatkit's
+`ChatApp` or `Composer` with `attach: false` or `voice: false` on a line with no
+`experience-exempt: <reason>`. A chat with no paperclip or no microphone cannot
+be used by everyone it serves (Solon's law chat shipped with both off). It is
+opt-in: it fails a product only when its ceiling names it, e.g.
+`"mutedChats": 0`, so no product's CI changes until it asks.
+
 BiasLens's one `localComposers` file is the article composer it shipped in
 November 2026 as app code; it moves into `writingkit` in the plan, which is the
 case the rule exists for. `localComments` reads 0 across the fleet because
diff --git a/scripts/ci/experience-audit.mjs b/scripts/ci/experience-audit.mjs
index d930ca2..534c521 100644
--- a/scripts/ci/experience-audit.mjs
+++ b/scripts/ci/experience-audit.mjs
@@ -24,6 +24,12 @@
  *                       import chatkit
  *   localArticleEditors an Article/Post/Blog Composer/Editor/Form file that
  *                       does not import writingkit
+ *   mutedChats          a file that renders chatkit's ChatApp/Composer with
+ *                       `attach: false` or `voice: false` on a line that carries
+ *                       no `experience-exempt: <reason>` comment. A chat with no
+ *                       paperclip or no microphone is a chat that cannot be
+ *                       used by everyone it serves. Opt-in: it only fails a
+ *                       product whose ceiling names it (`"mutedChats": 0`).
  *
  * What it does with the counts is the product's choice, in package-plan.json:
  *
@@ -52,6 +58,7 @@ export const KINDS = [
   'localComposers',
   'localComments',
   'localArticleEditors',
+  'mutedChats',
 ];
 
 const SKIP_DIRS = new Set([
@@ -80,6 +87,9 @@ const ARTICLE_EDITOR = /^(Article|Post|Blog)(Composer|Editor|Form)\.(tsx|jsx)$/;
 const imports = (source, pkg) =>
   new RegExp(`(?:from\\s*|import\\s*)['"]${pkg.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}(?:/[^'"]*)?['"]`).test(source);
 
+const MUTED = /\b(attach|voice)\s*(?::|=)\s*\{?\s*false\b/;
+const LINE_EXEMPT = /experience-exempt:\s*\S.{19,}/;
+
 const EXEMPT = /^\s*(?:\/\/|\/\*)\s*experience-exempt:\s*(\S.{19,})/;
 
 /** Walk a repo's source files, skipping build output and tests. */
@@ -112,6 +122,12 @@ export function classify(path, source) {
   if (COMPOSER.test(name) && !chatkit) kinds.push('localComposers');
   if (COMMENTS.test(name) && !chatkit) kinds.push('localComments');
   if (ARTICLE_EDITOR.test(name) && !writingkit) kinds.push('localArticleEditors');
+  if (
+    chatkit &&
+    /<(ChatApp|Composer)\b/.test(source) &&
+    source.split('\n').some((line) => MUTED.test(line) && !LINE_EXEMPT.test(line))
+  )
+    kinds.push('mutedChats');
   return kinds;
 }
 
@@ -138,7 +154,9 @@ export function measure(dir) {
 export function overCeiling(counts, plan) {
   const ceiling = plan?.experience?.ceiling;
   if (!ceiling || typeof ceiling !== 'object') return [];
-  return KINDS.filter((k) => counts[k] > (Number.isInteger(ceiling[k]) ? ceiling[k] : 0)).map(
+  // mutedChats is opt-in: a product that has not named it in its ceiling is not
+  // failed for it (existing products have a baseline they never agreed to).
+  return KINDS.filter((k) => (k !== 'mutedChats' || Number.isInteger(ceiling[k])) && counts[k] > (Number.isInteger(ceiling[k]) ? ceiling[k] : 0)).map(
     (k) =>
       `${k}: ${counts[k]} above the ceiling of ${Number.isInteger(ceiling[k]) ? ceiling[k] : 0} — use the package's component (see AGENTS.md "The experience belongs to the package"), or lower the count; do not raise the ceiling.`,
   );
diff --git a/scripts/ci/experience-audit.test.mjs b/scripts/ci/experience-audit.test.mjs
index e5142ac..f725559 100644
--- a/scripts/ci/experience-audit.test.mjs
+++ b/scripts/ci/experience-audit.test.mjs
@@ -74,3 +74,29 @@ test('a ceiling holds the count; no ceiling only reports; a missing kind means z
   assert.match(over[0], /bareTextareas: 3 above the ceiling of 2/);
   assert.match(over[1], /localChrome: 1 above the ceiling of 0/);
 });
+
+test('a chat with attachments or voice switched off needs a reason on that line', () => {
+  const chat = "import { ChatApp } from '@bitbaum/chatkit/react';\n";
+  assert.deepEqual(classify('src/Chat.tsx', chat + 'export const C = () => <ChatApp composer={{ attach: false }} />;'), ['mutedChats']);
+  assert.deepEqual(classify('src/Chat.tsx', chat + 'export const C = () => <ChatApp composer={{ voice: false }} />;'), ['mutedChats']);
+  assert.deepEqual(
+    classify('src/Chat.tsx', chat + 'export const C = () => <ChatApp composer={{ attach: {} , voice: {} }} />;'),
+    [],
+  );
+  assert.deepEqual(
+    classify(
+      'src/Chat.tsx',
+      chat + '<ChatApp\n  composer={{ attach: false }} // experience-exempt: read-only archive, nothing can be sent\n/>',
+    ),
+    [],
+  );
+  assert.deepEqual(classify('src/Other.tsx', 'const o = { attach: false };\n<ChatApp />'), []);
+});
+
+test('mutedChats fails only a product whose ceiling names it', () => {
+  const counts = { bareTextareas: 0, localChrome: 0, localComposers: 0, localComments: 0, localArticleEditors: 0, mutedChats: 2 };
+  assert.deepEqual(overCeiling(counts, { experience: { ceiling: {} } }), []);
+  const over = overCeiling(counts, { experience: { ceiling: { mutedChats: 0 } } });
+  assert.equal(over.length, 1);
+  assert.match(over[0], /mutedChats: 2 above the ceiling of 0/);
+});