diff --git a/packages/session-ui/src/components/session-turn.tsx b/packages/session-ui/src/components/session-turn.tsx
index 4ebf6459b1..2c7d7508ff 100644
--- a/packages/session-ui/src/components/session-turn.tsx
+++ b/packages/session-ui/src/components/session-turn.tsx
@@ -297,6 +297,7 @@ export function SessionTurn(
   const error = createMemo(
     () => assistantMessages().find((m) => m.error && m.error.name !== "MessageAbortedError")?.error,
   )
+  const contentFiltered = createMemo(() => assistantMessages().some((m) => m.finish === "content-filter"))
   const showAssistantCopyPartID = createMemo(() => {
     const messages = assistantMessages()
 
@@ -315,6 +316,7 @@ export function SessionTurn(
     return undefined
   })
   const errorText = createMemo(() => {
+    if (contentFiltered()) return "The response was blocked by the provider's content filter"
     const msg = error()?.data?.message
     if (typeof msg === "string") return unwrap(msg)
     if (msg === undefined || msg === null) return ""
@@ -525,7 +527,7 @@ export function SessionTurn(
                   </div>
                 </div>
               </Show>
-              <Show when={error()}>
+              <Show when={error() || contentFiltered()}>
                 <Card variant="error" class="error-card">
                   {errorText()}
                 </Card>
diff --git a/packages/tui/src/routes/session/index.tsx b/packages/tui/src/routes/session/index.tsx
index e2ece2fbd5..a4dc56258a 100644
--- a/packages/tui/src/routes/session/index.tsx
+++ b/packages/tui/src/routes/session/index.tsx
@@ -1197,9 +1197,13 @@ function AssistantFooter(props: { message: SessionMessageAssistant }) {
   const duration = createMemo(() =>
     props.message.time.completed ? props.message.time.completed - props.message.time.created : 0,
   )
+  const contentFiltered = createMemo(() => props.message.finish === "content-filter")
+  const errorText = createMemo(() =>
+    contentFiltered() ? "The response was blocked by the provider's content filter" : errorMessage(props.message.error),
+  )
   return (
     <>
-      <Show when={props.message.error}>
+      <Show when={props.message.error || contentFiltered()}>
         <box
           border={["left"]}
           paddingTop={1}
@@ -1209,12 +1213,16 @@ function AssistantFooter(props: { message: SessionMessageAssistant }) {
           customBorderChars={SplitBorder.customBorderChars}
           borderColor={theme.error}
         >
-          <text fg={theme.textMuted}>{errorMessage(props.message.error)}</text>
+          <text fg={theme.textMuted}>{errorText()}</text>
         </box>
       </Show>
-      <box paddingLeft={3} marginTop={props.message.error ? 1 : 0}>
+      <box paddingLeft={3} marginTop={props.message.error || contentFiltered() ? 1 : 0}>
         <text>
-          <span style={{ fg: props.message.error ? theme.textMuted : local.agent.color(props.message.agent) }}>
+          <span
+            style={{
+              fg: props.message.error || contentFiltered() ? theme.textMuted : local.agent.color(props.message.agent),
+            }}
+          >
             {Locale.titlecase(props.message.agent)}
           </span>
           <span style={{ fg: theme.textMuted }}> · {model()}</span>
@@ -1386,13 +1394,7 @@ function UserMessage(props: { message: SessionMessageUser }) {
         >
           <text fg={theme.text}>{props.message.text}</text>
           <Show when={files().length}>
-            <box
-              flexDirection="row"
-              paddingBottom={metadataVisible() ? 1 : 0}
-              paddingTop={1}
-              gap={1}
-              flexWrap="wrap"
-            >
+            <box flexDirection="row" paddingBottom={metadataVisible() ? 1 : 0} paddingTop={1} gap={1} flexWrap="wrap">
               <For each={files()}>
                 {(file) => {
                   const directory = file.mime === "application/x-directory"
@@ -1452,6 +1454,10 @@ function AssistantMessage(props: { message: SessionMessageAssistant; last: boole
     if (!props.message.time.completed) return 0
     return props.message.time.completed - props.message.time.created
   })
+  const contentFiltered = createMemo(() => props.message.finish === "content-filter")
+  const errorText = createMemo(() =>
+    contentFiltered() ? "The response was blocked by the provider's content filter" : errorMessage(props.message.error),
+  )
 
   const exploration = createMemo(() => {
     const grouped = new Map<string, { first: boolean; parts: SessionMessageAssistantTool[]; active: boolean }>()
@@ -1514,7 +1520,7 @@ function AssistantMessage(props: { message: SessionMessageAssistant; last: boole
           </Switch>
         )}
       </For>
-      <Show when={props.message.error}>
+      <Show when={props.message.error || contentFiltered()}>
         <box
           border={["left"]}
           paddingTop={1}
@@ -1524,14 +1530,19 @@ function AssistantMessage(props: { message: SessionMessageAssistant; last: boole
           customBorderChars={SplitBorder.customBorderChars}
           borderColor={theme.error}
         >
-          <text fg={theme.textMuted}>{errorMessage(props.message.error)}</text>
+          <text fg={theme.textMuted}>{errorText()}</text>
         </box>
       </Show>
       <Switch>
-        <Match when={props.last || final() || props.message.error}>
+        <Match when={props.last || final() || props.message.error || contentFiltered()}>
           <box paddingLeft={3}>
             <text>
-              <span style={{ fg: props.message.error ? theme.textMuted : local.agent.color(props.message.agent) }}>
+              <span
+                style={{
+                  fg:
+                    props.message.error || contentFiltered() ? theme.textMuted : local.agent.color(props.message.agent),
+                }}
+              >
                 {Locale.titlecase(props.message.agent)}
               </span>
               <span style={{ fg: theme.textMuted }}> · {model()}</span>
@@ -1722,7 +1733,8 @@ function ToolPart(props: { part: SessionMessageAssistantTool }) {
       return Boolean(shellID && data.shell.get(shellID))
     }
     if (display() === "subagent") {
-      const sessionID = stringValue(props.part.state.structured.sessionID) ?? stringValue(props.part.state.structured.sessionId)
+      const sessionID =
+        stringValue(props.part.state.structured.sessionID) ?? stringValue(props.part.state.structured.sessionId)
       return Boolean(sessionID && data.session.status(sessionID) === "running")
     }
     return false
diff --git a/packages/tui/test/cli/tui/session-rows.test.ts b/packages/tui/test/cli/tui/session-rows.test.ts
index fec6f5eb87..4ffeef53fe 100644
--- a/packages/tui/test/cli/tui/session-rows.test.ts
+++ b/packages/tui/test/cli/tui/session-rows.test.ts
@@ -95,9 +95,7 @@ test("completes exploration groups when another row follows", () => {
   ])
   finished.finish = "stop"
   const messages: SessionMessage[] = [
-    assistant("assistant-1", [
-      { type: "tool", id: "read-1", name: "read", state: pending(), time: { created: 1 } },
-    ]),
+    assistant("assistant-1", [{ type: "tool", id: "read-1", name: "read", state: pending(), time: { created: 1 } }]),
     { type: "user", id: "user-1", text: "Continue", time: { created: 2 } },
     finished,
   ]
@@ -122,6 +120,13 @@ test("completes exploration groups when another row follows", () => {
   ])
 })
 
+test("adds a footer for content-filter assistant finishes without parts", () => {
+  const filtered = assistant("assistant-filtered", [])
+  filtered.finish = "content-filter"
+
+  expect(reduceSessionRows([filtered])).toEqual([{ type: "assistant-footer", messageID: "assistant-filtered" }])
+})
+
 test("hides synthetic messages without descriptions", () => {
   const messages: SessionMessage[] = [
     assistant("assistant-1", [{ type: "tool", id: "read-1", name: "read", state: pending(), time: { created: 1 } }]),