diff --git a/src/chrome/src/agent/tools.js b/src/chrome/src/agent/tools.js
index 6fdbf0aec8..158080d253 100644
--- a/src/chrome/src/agent/tools.js
+++ b/src/chrome/src/agent/tools.js
@@ -1538,6 +1538,32 @@ function askResearchConsentTool(tool) {
   };
 }
 
+function ordinaryClarifyTool(tool) {
+  const properties = { ...tool.function.parameters.properties };
+  delete properties.purpose;
+  delete properties.research_request;
+  delete properties.approve_option;
+  return {
+    ...tool,
+    function: {
+      ...tool.function,
+      parameters: {
+        ...tool.function.parameters,
+        properties: {
+          ...properties,
+          require_explicit_answer: {
+            ...properties.require_explicit_answer,
+            description: 'Wait for a direct user reply and ignore the global clarify timeout/Instant setting. Use when consent or a user-controlled value must not be inferred or auto-selected.',
+          },
+        },
+        required: (tool.function.parameters.required || []).filter(name => (
+          name !== 'purpose' && name !== 'research_request' && name !== 'approve_option'
+        )),
+      },
+    },
+  };
+}
+
 /**
  * Get tools filtered by mode.
  *
@@ -1570,7 +1596,8 @@ export function getToolsForMode(mode, opts = {}) {
   }
   if (opts.researchEscalationEnabled !== true) {
     base = base.filter(t => t.function.name !== 'delegate_research'
-      && !(normalizedMode === 'ask' && t.function.name === 'clarify'));
+      && !(normalizedMode === 'ask' && t.function.name === 'clarify'))
+      .map(t => (t.function.name === 'clarify' ? ordinaryClarifyTool(t) : t));
   }
   const requestedTreePageChars = tier !== 'compact'
     && Number(opts.accessibilityTreeMaxChars) === EXPANDED_TREE_PAGE_CHARS
diff --git a/src/firefox/src/agent/tools.js b/src/firefox/src/agent/tools.js
index fd55ba6370..59f5491703 100644
--- a/src/firefox/src/agent/tools.js
+++ b/src/firefox/src/agent/tools.js
@@ -1385,6 +1385,32 @@ function askResearchConsentTool(tool) {
   };
 }
 
+function ordinaryClarifyTool(tool) {
+  const properties = { ...tool.function.parameters.properties };
+  delete properties.purpose;
+  delete properties.research_request;
+  delete properties.approve_option;
+  return {
+    ...tool,
+    function: {
+      ...tool.function,
+      parameters: {
+        ...tool.function.parameters,
+        properties: {
+          ...properties,
+          require_explicit_answer: {
+            ...properties.require_explicit_answer,
+            description: 'Wait for a direct user reply and ignore the global clarify timeout/Instant setting. Use when consent or a user-controlled value must not be inferred or auto-selected.',
+          },
+        },
+        required: (tool.function.parameters.required || []).filter(name => (
+          name !== 'purpose' && name !== 'research_request' && name !== 'approve_option'
+        )),
+      },
+    },
+  };
+}
+
 /**
  * Get tools filtered by mode.
  *
@@ -1416,7 +1442,8 @@ export function getToolsForMode(mode, opts = {}) {
   }
   if (opts.researchEscalationEnabled !== true) {
     base = base.filter(t => t.function.name !== 'delegate_research'
-      && !(normalizedMode === 'ask' && t.function.name === 'clarify'));
+      && !(normalizedMode === 'ask' && t.function.name === 'clarify'))
+      .map(t => (t.function.name === 'clarify' ? ordinaryClarifyTool(t) : t));
   }
   const requestedTreePageChars = tier !== 'compact'
     && Number(opts.accessibilityTreeMaxChars) === EXPANDED_TREE_PAGE_CHARS
diff --git a/test/run.js b/test/run.js
index 6a54370325..258582da46 100644
--- a/test/run.js
+++ b/test/run.js
@@ -2354,6 +2354,7 @@ test('research escalation is opt-in, tier-complete when enabled, and absent othe
     assert.equal(getTools('ask').some(tool => tool.function.name === 'delegate_research'), false, `${label}: default Ask exposed research delegation`);
     assert.equal(getTools('act').some(tool => tool.function.name === 'delegate_research'), false, `${label}: default Act exposed research delegation`);
     assert.ok(getTools('act').some(tool => tool.function.name === 'clarify'), `${label}: opt-in default removed normal Act clarification`);
+    const researchOnlyClarifyFields = ['purpose', 'research_request', 'approve_option'];
     for (const [mode, tier] of [['ask', 'full'], ['act', 'compact'], ['act', 'mid'], ['act', 'full']]) {
       const enabled = getTools(mode, { tier, researchEscalationEnabled: true });
       assert.ok(enabled.some(tool => tool.function.name === 'delegate_research'), `${label}: ${mode}/${tier} did not expose research escalation`);
@@ -2367,6 +2368,37 @@ test('research escalation is opt-in, tier-complete when enabled, and absent othe
         mode !== 'ask',
         `${label}: disabled research escalation must hide Ask clarification without removing normal ${mode} clarification`,
       );
+      const disabledClarify = disabled.find(tool => tool.function.name === 'clarify');
+      if (disabledClarify) {
+        for (const field of researchOnlyClarifyFields) {
+          assert.equal(
+            field in disabledClarify.function.parameters.properties,
+            false,
+            `${label}: disabled ${mode}/${tier} ordinary clarification exposed ${field}`,
+          );
+          assert.equal(
+            disabledClarify.function.parameters.required.includes(field),
+            false,
+            `${label}: disabled ${mode}/${tier} ordinary clarification required ${field}`,
+          );
+        }
+        assert.ok(
+          disabledClarify.function.parameters.properties.require_explicit_answer,
+          `${label}: disabled ${mode}/${tier} ordinary clarification lost explicit-answer support`,
+        );
+      }
+    }
+    for (const [mode, tier] of [['dev', 'mid'], ['dev', 'full']]) {
+      const disabledClarify = getTools(mode, { tier, researchEscalationEnabled: false })
+        .find(tool => tool.function.name === 'clarify');
+      assert.ok(disabledClarify, `${label}: disabled research escalation removed normal ${mode}/${tier} clarification`);
+      for (const field of researchOnlyClarifyFields) {
+        assert.equal(
+          field in disabledClarify.function.parameters.properties,
+          false,
+          `${label}: disabled ${mode}/${tier} ordinary clarification exposed ${field}`,
+        );
+      }
     }
 
     const askConsent = getTools('ask', { researchEscalationEnabled: true })
@@ -2390,8 +2422,18 @@ test('research escalation is opt-in, tier-complete when enabled, and absent othe
     const actClarify = getTools('act', { researchEscalationEnabled: true })
       .find(tool => tool.function.name === 'clarify');
     assert.ok(actClarify.function.parameters.properties.require_explicit_answer, `${label}: narrowing Ask changed normal Act clarification`);
+    for (const field of researchOnlyClarifyFields) {
+      assert.ok(actClarify.function.parameters.properties[field], `${label}: enabled Act clarification lost ${field}`);
+    }
     assert.deepEqual(actClarify.function.parameters.required, ['question']);
     assert.doesNotMatch(actClarify.function.description, /not a generic clarification tool/i);
+
+    const defaultActClarify = getTools('act').find(tool => tool.function.name === 'clarify');
+    assert.match(
+      defaultActClarify.function.parameters.properties.require_explicit_answer.description,
+      /user-controlled value must not be inferred or auto-selected/i,
+      `${label}: ordinary clarification still advertises research escalation semantics`,
+    );
   }
 });