diff --git a/WHATS_NEW.md b/WHATS_NEW.md
index 18ba3291..d7bf15b2 100644
--- a/WHATS_NEW.md
+++ b/WHATS_NEW.md
@@ -2,6 +2,12 @@
 
 ## What's new (2026-06-26)
 
+### Act In View — Scroll to a Target, Then Act When Actionable
+
+Click the row three pages down: scroll it into view, then gate on actionability before clicking. Full reference: [`docs/source/Eng/doc/new_features/v221_features_doc.rst`](docs/source/Eng/doc/new_features/v221_features_doc.rst).
+
+- **`act_in_view` / `ScrollPlan`** (`AC_act_in_view`): two reliability primitives stayed separate — `scroll_find.scroll_until_visible` brings an off-screen target on-screen, and `actionability.act_when_ready` waits for it to be visible/stable/enabled/unoccluded before acting. A real "click the off-screen row" step needs both. `act_in_view` composes them: scroll until the target is located, then run the actionability gate at its point and perform the action. `ScrollPlan` bundles the scroll search + its `locator`/`scroller` seams so the call stays within the argument limit; the actionability probes (`region_sampler`/`enabled_probe`/`hit_tester`) and gate `config` are injectable too, so the whole flow is testable without a screen. Closes the input-fidelity lane's composition gap. No `PySide6`.
+
 ### Template-Free Element Proposal (Pixels to Elements)
 
 Get a clean numbered element list straight from the screen when there's no accessibility tree. Full reference: [`docs/source/Eng/doc/new_features/v220_features_doc.rst`](docs/source/Eng/doc/new_features/v220_features_doc.rst).
diff --git a/docs/source/Eng/doc/new_features/v221_features_doc.rst b/docs/source/Eng/doc/new_features/v221_features_doc.rst
new file mode 100644
index 00000000..e3d9711a
--- /dev/null
+++ b/docs/source/Eng/doc/new_features/v221_features_doc.rst
@@ -0,0 +1,49 @@
+Act In View — Scroll to a Target, Then Act When Actionable
+==========================================================
+
+Two reliability primitives stayed separate: ``scroll_find.scroll_until_visible``
+brings an off-screen target on-screen, and ``actionability.act_when_ready`` waits
+for a target to be visible / stable / enabled / unoccluded before acting. A real
+"click the row three pages down" step needs *both* — scroll to it, then gate
+before clicking. ``act_in_view`` composes them into one call.
+
+* :class:`ScrollPlan` — bundles the scroll search (``kind`` / ``direction`` /
+  ``max_scrolls`` / ``scroll_amount``) and its injectable ``locator`` /
+  ``scroller`` seams, so the composed call stays within a sane argument count.
+* :func:`act_in_view` — scroll until the target is found, then run the
+  actionability gate at its location and perform ``action`` on it.
+
+Every seam — the scroll locator / scroller, the action, the actionability probes
+(``region_sampler`` / ``enabled_probe`` / ``hit_tester``) and the gate ``config``
+— is injectable, so the whole flow is testable without a screen. Reuses
+:func:`scroll_find.scroll_until_visible` and
+:func:`actionability.act_when_ready`. Imports no ``PySide6``.
+
+Headless API
+------------
+
+.. code-block:: python
+
+    from je_auto_control import act_in_view, ScrollPlan
+
+    # Scroll down to the "Submit" button image, then click it once it's actionable
+    act_in_view("submit.png", lambda point: click(point[0], point[1]),
+                scroll=ScrollPlan(kind="image", direction="down",
+                                  max_scrolls=20))
+
+``act_in_view`` returns ``{acted, coords, scrolls, result}`` (``result`` is the
+action's return value) and raises ``AutoControlActionException`` if the target
+never comes into view. Pass ``enabled_probe`` / ``hit_tester`` / ``config`` to
+have the actionability gate actually wait for the control to be enabled and
+unoccluded before the action fires — otherwise it acts as soon as the target is
+located.
+
+Executor commands
+-----------------
+
+``AC_act_in_view`` (``target`` + ``kind`` / ``direction`` / ``max_scrolls`` /
+``scroll_amount`` / ``button`` → ``{acted, coords, scrolls}``) scrolls a template
+or text target into view and clicks it. It is the matching ``ac_act_in_view`` MCP
+tool and a Script Builder command under **Flow**. :func:`act_in_view` (which
+takes an arbitrary action and the actionability probes) is the Python-API
+surface.
diff --git a/docs/source/Zh/doc/new_features/v221_features_doc.rst b/docs/source/Zh/doc/new_features/v221_features_doc.rst
new file mode 100644
index 00000000..986ae7b9
--- /dev/null
+++ b/docs/source/Zh/doc/new_features/v221_features_doc.rst
@@ -0,0 +1,38 @@
+在視野內操作——捲動到目標,再於可操作時動作
+============================================
+
+兩個可靠性原語原本各自獨立:``scroll_find.scroll_until_visible`` 把螢幕外的目標捲進畫面,
+``actionability.act_when_ready`` 則在目標可見 / 穩定 / 啟用 / 未被遮擋前等待再動作。真實的
+「點選下三頁的那一列」步驟需要*兩者*——先捲到它,再閘控後才點擊。``act_in_view`` 把它們組合成單一呼叫。
+
+* :class:`ScrollPlan` ——把捲動搜尋(``kind`` / ``direction`` / ``max_scrolls`` /
+  ``scroll_amount``)與其可注入的 ``locator`` / ``scroller`` 接縫打包,讓組合後的呼叫維持在合理的參數數量內。
+* :func:`act_in_view` ——捲動直到找到目標,接著在其位置執行 actionability 閘控,並對其執行 ``action``。
+
+每個接縫——捲動的 locator / scroller、action、actionability 探針(``region_sampler`` /
+``enabled_probe`` / ``hit_tester``)與閘控 ``config``——皆可注入,故整個流程能在沒有螢幕的情況下測試。
+重用 :func:`scroll_find.scroll_until_visible` 與 :func:`actionability.act_when_ready`。不匯入 ``PySide6``。
+
+無頭 API
+--------
+
+.. code-block:: python
+
+    from je_auto_control import act_in_view, ScrollPlan
+
+    # 向下捲動到「Submit」按鈕影像,於可操作時點擊
+    act_in_view("submit.png", lambda point: click(point[0], point[1]),
+                scroll=ScrollPlan(kind="image", direction="down",
+                                  max_scrolls=20))
+
+``act_in_view`` 回傳 ``{acted, coords, scrolls, result}``(``result`` 為 action 的回傳值),
+若目標始終未進入畫面則丟出 ``AutoControlActionException``。傳入 ``enabled_probe`` / ``hit_tester`` /
+``config`` 可讓 actionability 閘控真正等到控制項已啟用且未被遮擋才觸發動作——否則一旦定位到目標即動作。
+
+執行器指令
+----------
+
+``AC_act_in_view``(``target`` 加上 ``kind`` / ``direction`` / ``max_scrolls`` /
+``scroll_amount`` / ``button`` → ``{acted, coords, scrolls}``)把 template 或文字目標捲入畫面並點擊。
+以對應的 ``ac_act_in_view`` MCP 工具及 Script Builder 指令(位於 **Flow** 分類下)形式提供。
+:func:`act_in_view`(接受任意 action 與 actionability 探針)則是 Python API 介面。
diff --git a/je_auto_control/__init__.py b/je_auto_control/__init__.py
index 1ccf1d6d..7817f77d 100644
--- a/je_auto_control/__init__.py
+++ b/je_auto_control/__init__.py
@@ -151,6 +151,8 @@
 )
 # Propose a clean element list from raw pixels (template-free)
 from je_auto_control.utils.element_proposal import propose_elements, tag_kinds
+# Scroll a target into view, then act on it once it is actionable
+from je_auto_control.utils.act_in_view import ScrollPlan, act_in_view
 # Rich clipboard formats — RTF + CSV/TSV codecs and Windows get / set
 from je_auto_control.utils.clipboard_rich_formats import (
     build_rtf, csv_to_rows, get_clipboard_csv, get_clipboard_rtf, rows_to_csv,
@@ -1782,6 +1784,7 @@ def start_autocontrol_gui(*args, **kwargs):
     "localize_changes", "rank_changes",
     "classify_widget", "box_features", "classify_icon",
     "propose_elements", "tag_kinds",
+    "act_in_view", "ScrollPlan",
     "build_rtf", "rtf_to_text", "rows_to_csv", "csv_to_rows",
     "set_clipboard_rtf", "get_clipboard_rtf",
     "set_clipboard_csv", "get_clipboard_csv",
diff --git a/je_auto_control/gui/script_builder/command_schema.py b/je_auto_control/gui/script_builder/command_schema.py
index 50e2031b..29885136 100644
--- a/je_auto_control/gui/script_builder/command_schema.py
+++ b/je_auto_control/gui/script_builder/command_schema.py
@@ -4522,6 +4522,23 @@ def _add_work_queue_specs(specs: List[CommandSpec]) -> None:
         ),
         description="Index where a busy/idle series first settles idle.",
     ))
+    specs.append(CommandSpec(
+        "AC_act_in_view", "Flow", "Act In View (scroll + click)",
+        fields=(
+            FieldSpec("target", FieldType.STRING,
+                      placeholder="template path or text"),
+            FieldSpec("kind", FieldType.STRING, optional=True,
+                      default="image", placeholder="image / text"),
+            FieldSpec("direction", FieldType.STRING, optional=True,
+                      default="down", placeholder="up / down"),
+            FieldSpec("max_scrolls", FieldType.INT, optional=True, default=10),
+            FieldSpec("scroll_amount", FieldType.INT, optional=True,
+                      default=3),
+            FieldSpec("button", FieldType.STRING, optional=True,
+                      default="left"),
+        ),
+        description="Scroll a target into view, then click it when actionable.",
+    ))
     specs.append(CommandSpec(
         "AC_simulate_cvd", "Image", "Simulate Colour-Vision Deficiency",
         fields=(
diff --git a/je_auto_control/utils/act_in_view/__init__.py b/je_auto_control/utils/act_in_view/__init__.py
new file mode 100644
index 00000000..43640bad
--- /dev/null
+++ b/je_auto_control/utils/act_in_view/__init__.py
@@ -0,0 +1,6 @@
+"""Scroll a target into view, then act on it once it is actionable."""
+from je_auto_control.utils.act_in_view.act_in_view import (
+    ScrollPlan, act_in_view,
+)
+
+__all__ = ["act_in_view", "ScrollPlan"]
diff --git a/je_auto_control/utils/act_in_view/act_in_view.py b/je_auto_control/utils/act_in_view/act_in_view.py
new file mode 100644
index 00000000..c0cc903f
--- /dev/null
+++ b/je_auto_control/utils/act_in_view/act_in_view.py
@@ -0,0 +1,70 @@
+"""Scroll a target into view, then act on it only once it is actionable.
+
+Two reliability primitives the framework already had stayed separate:
+``scroll_find.scroll_until_visible`` brings an off-screen target on-screen, and
+``actionability.act_when_ready`` waits for a target to be visible / stable /
+enabled / unoccluded before acting. A real "click the row three pages down" step
+needs *both* — scroll to it, then gate before clicking. ``act_in_view`` composes
+them into one call.
+
+* :class:`ScrollPlan` — bundles the scroll search (``kind`` / ``direction`` /
+  ``max_scrolls`` / ``scroll_amount``) and its injectable ``locator`` /
+  ``scroller`` seams, so the composed call stays within a sane argument count.
+* :func:`act_in_view` — scroll until the target is found, then run the
+  actionability gate at its location and perform ``action`` on it.
+
+All seams (locator / scroller / action / actionability probes / clock) are
+injectable, so the whole flow is testable without a screen. Reuses
+:func:`scroll_find.scroll_until_visible` and
+:func:`actionability.act_when_ready`. Imports no ``PySide6``.
+"""
+from dataclasses import dataclass
+from typing import Any, Callable, Dict, List, Optional
+
+from je_auto_control.utils.actionability import GateConfig, act_when_ready
+from je_auto_control.utils.exception.exceptions import AutoControlActionException
+from je_auto_control.utils.scroll_find import scroll_until_visible
+from je_auto_control.utils.scroll_find.scroll_find import Locator, Scroller
+
+
+@dataclass
+class ScrollPlan:
+    """How to scroll while searching for the target (with injectable seams)."""
+
+    kind: str = "image"
+    direction: str = "down"
+    max_scrolls: int = 10
+    scroll_amount: int = 3
+    locator: Optional[Locator] = None
+    scroller: Optional[Scroller] = None
+
+
+def act_in_view(target: str, action: Callable[[List[int]], Any], *,
+                scroll: Optional[ScrollPlan] = None,
+                region_sampler: Optional[Callable[[Any], Any]] = None,
+                enabled_probe: Optional[Callable[[], Optional[bool]]] = None,
+                hit_tester: Optional[Callable[[List[int]], bool]] = None,
+                config: Optional[GateConfig] = None) -> Dict[str, Any]:
+    """Scroll ``target`` into view, gate on actionability, then ``action`` it.
+
+    Scrolls per ``scroll`` (a :class:`ScrollPlan`) until ``target`` is located,
+    then runs :func:`actionability.act_when_ready` at the found point and calls
+    ``action(center_point)``. Raises ``AutoControlActionException`` if the target
+    never comes into view. The actionability probes / ``config`` are injectable
+    and forwarded to the gate. Returns ``{acted, coords, scrolls, result}``.
+    """
+    plan = scroll if scroll is not None else ScrollPlan()
+    found = scroll_until_visible(
+        target, kind=plan.kind, direction=plan.direction,
+        max_scrolls=plan.max_scrolls, scroll_amount=plan.scroll_amount,
+        locator=plan.locator, scroller=plan.scroller)
+    if not found["found"]:
+        raise AutoControlActionException(
+            f"target {target!r} not in view after {found['scrolls']} scrolls")
+    cx, cy = int(found["coords"][0]), int(found["coords"][1])
+    result = act_when_ready(action, lambda: (cx, cy, 1, 1),
+                            region_sampler=region_sampler,
+                            enabled_probe=enabled_probe, hit_tester=hit_tester,
+                            config=config)
+    return {"acted": True, "coords": [cx, cy], "scrolls": found["scrolls"],
+            "result": result}
diff --git a/je_auto_control/utils/executor/action_executor.py b/je_auto_control/utils/executor/action_executor.py
index 7f5a8761..4f566c17 100644
--- a/je_auto_control/utils/executor/action_executor.py
+++ b/je_auto_control/utils/executor/action_executor.py
@@ -2963,6 +2963,22 @@ def _tag_kinds(elements: Any) -> Dict[str, Any]:
     return {"elements": tag_kinds(items)}
 
 
+def _act_in_view(target: Any, kind: Any = "image", direction: Any = "down",
+                 max_scrolls: Any = 10, scroll_amount: Any = 3,
+                 button: Any = "left") -> Dict[str, Any]:
+    """Adapter: scroll a target into view then click it when actionable."""
+    from je_auto_control.utils.act_in_view import ScrollPlan, act_in_view
+    plan = ScrollPlan(kind=str(kind), direction=str(direction),
+                      max_scrolls=int(max_scrolls),
+                      scroll_amount=int(scroll_amount))
+    out = act_in_view(
+        str(target),
+        lambda point: click_mouse(str(button), int(point[0]), int(point[1])),
+        scroll=plan)
+    return {"acted": out["acted"], "coords": out["coords"],
+            "scrolls": out["scrolls"]}
+
+
 def _normalize_ext(target: str) -> Dict[str, Any]:
     """Adapter: the lowercased extension of a path / bare ext (pure)."""
     from je_auto_control.utils.file_assoc import normalize_ext
@@ -7008,6 +7024,7 @@ def __init__(self):
             "AC_classify_icon": _classify_icon,
             "AC_propose_elements": _propose_elements,
             "AC_tag_kinds": _tag_kinds,
+            "AC_act_in_view": _act_in_view,
             "AC_normalize_ext": _normalize_ext,
             "AC_file_association": _file_association,
             "AC_get_control_text": _get_control_text,
diff --git a/je_auto_control/utils/mcp_server/tools/_factories.py b/je_auto_control/utils/mcp_server/tools/_factories.py
index 26c2427e..e2910c74 100644
--- a/je_auto_control/utils/mcp_server/tools/_factories.py
+++ b/je_auto_control/utils/mcp_server/tools/_factories.py
@@ -1898,6 +1898,21 @@ def smart_wait_tools() -> List[MCPTool]:
             handler=h.idle_point,
             annotations=READ_ONLY,
         ),
+        MCPTool(
+            name="ac_act_in_view",
+            description=("Scroll a 'target' (kind=image template path / text) "
+                         "into view, wait until it is actionable, then click it "
+                         "('button'). Returns {acted, coords, scrolls}."),
+            input_schema=schema({"target": {"type": "string"},
+                                 "kind": {"type": "string"},
+                                 "direction": {"type": "string"},
+                                 "max_scrolls": {"type": "integer"},
+                                 "scroll_amount": {"type": "integer"},
+                                 "button": {"type": "string"}},
+                                required=["target"]),
+            handler=h.act_in_view,
+            annotations=SIDE_EFFECT_ONLY,
+        ),
     ]
 
 
diff --git a/je_auto_control/utils/mcp_server/tools/_handlers.py b/je_auto_control/utils/mcp_server/tools/_handlers.py
index 91d38a68..4eadd1d0 100644
--- a/je_auto_control/utils/mcp_server/tools/_handlers.py
+++ b/je_auto_control/utils/mcp_server/tools/_handlers.py
@@ -809,6 +809,13 @@ def tag_kinds(elements):
     return _tag_kinds(elements)
 
 
+def act_in_view(target, kind="image", direction="down", max_scrolls=10,
+                scroll_amount=3, button="left"):
+    from je_auto_control.utils.executor.action_executor import _act_in_view
+    return _act_in_view(target, kind, direction, max_scrolls, scroll_amount,
+                        button)
+
+
 def normalize_ext(target):
     from je_auto_control.utils.executor.action_executor import _normalize_ext
     return _normalize_ext(target)
diff --git a/test/unit_test/headless/test_act_in_view_batch.py b/test/unit_test/headless/test_act_in_view_batch.py
new file mode 100644
index 00000000..4c18ba76
--- /dev/null
+++ b/test/unit_test/headless/test_act_in_view_batch.py
@@ -0,0 +1,93 @@
+"""Headless tests for act_in_view (injected locator / scroller / action / gate)."""
+import pytest
+
+import je_auto_control as ac
+from je_auto_control.utils.act_in_view import ScrollPlan, act_in_view
+from je_auto_control.utils.actionability import GateConfig
+from je_auto_control.utils.exception.exceptions import AutoControlActionException
+
+
+def _locator_found_after(scrolls_needed, coords=(100, 200)):
+    """A locator that returns None until ``scrolls_needed`` scrolls, then coords."""
+    state = {"calls": 0}
+
+    def locator(_target):
+        result = coords if state["calls"] >= scrolls_needed else None
+        state["calls"] += 1
+        return result
+
+    return locator
+
+
+# --- scroll then act ------------------------------------------------------
+
+def test_act_in_view_scrolls_then_acts():
+    scrolled = []
+    clicked = []
+    plan = ScrollPlan(locator=_locator_found_after(2, (100, 200)),
+                      scroller=lambda direction, amount: scrolled.append(
+                          (direction, amount)),
+                      max_scrolls=5)
+    out = act_in_view("target.png", clicked.append, scroll=plan)
+    assert out["acted"] is True
+    assert out["coords"] == [100, 200]
+    assert out["scrolls"] == 2
+    assert clicked == [[100, 200]]   # acted at the located point
+    assert len(scrolled) == 2         # scrolled twice before finding
+
+
+def test_act_in_view_acts_immediately_when_already_visible():
+    clicked = []
+    plan = ScrollPlan(locator=lambda _t: (50, 60),
+                      scroller=lambda d, a: None)
+    out = act_in_view("here", clicked.append, scroll=plan)
+    assert out["scrolls"] == 0
+    assert clicked == [[50, 60]]
+
+
+def test_act_in_view_raises_when_never_found():
+    plan = ScrollPlan(locator=lambda _t: None,
+                      scroller=lambda d, a: None, max_scrolls=3)
+    with pytest.raises(AutoControlActionException):
+        act_in_view("missing", lambda point: None, scroll=plan)
+
+
+# --- actionability gate is honoured ---------------------------------------
+
+def test_act_in_view_waits_for_enabled():
+    enabled_calls = {"n": 0}
+
+    def enabled_probe():
+        enabled_calls["n"] += 1
+        return enabled_calls["n"] >= 2   # disabled on the first poll
+
+    ticks = iter([0.0, 0.0, 1.0, 2.0, 3.0, 4.0])
+    config = GateConfig(timeout_s=10.0, stable_for_s=0.0, poll_interval_s=1.0,
+                        clock=lambda: next(ticks), sleep=lambda _s: None)
+    clicked = []
+    plan = ScrollPlan(locator=lambda _t: (10, 20), scroller=lambda d, a: None)
+    out = act_in_view("x", clicked.append, scroll=plan,
+                      enabled_probe=enabled_probe, config=config)
+    assert out["acted"] is True
+    assert clicked == [[10, 20]]
+    assert enabled_calls["n"] >= 2       # gated until the probe reported enabled
+
+
+# --- wiring ---------------------------------------------------------------
+
+def test_wiring():
+    known = set(ac.executor.known_commands())
+    assert "AC_act_in_view" in known
+    from je_auto_control.utils.mcp_server.tools import (
+        build_default_tool_registry,
+    )
+    names = {t.name for t in build_default_tool_registry()}
+    assert "ac_act_in_view" in names
+    from je_auto_control.gui.script_builder.command_schema import _build_specs
+    specs = {s.command for s in _build_specs()}
+    assert "AC_act_in_view" in specs
+
+
+def test_facade_exports():
+    for name in ("act_in_view", "ScrollPlan"):
+        assert hasattr(ac, name) and name in ac.__all__