diff --git a/src/plyngent/cli/display.py b/src/plyngent/cli/display.py
index d838b73..5064837 100644
--- a/src/plyngent/cli/display.py
+++ b/src/plyngent/cli/display.py
@@ -44,6 +44,12 @@ _PRETTY_TOOLS = frozenset(
         "run_argv",
         "run_argv_batch",
         "fetch",
+        "edit_replace",
+        "edit_lineno",
+        "write_file",
+        "copy_path",
+        "move_path",
+        "delete_path",
     }
 )
 
@@ -384,6 +390,29 @@ def _fetch_pretty(args_json: str, result: str) -> str:
     return _pretty_line(f"* {method} {status} {url}", (detail, _http_status_fg(status)))
 
 
+_MUTATOR_VERBS: dict[str, str] = {
+    "edit_replace": "Edited",
+    "edit_lineno": "Edited",
+    "write_file": "Wrote",
+    "copy_path": "Copied",
+    "move_path": "Moved",
+    "delete_path": "Deleted",
+}
+
+_MUTATOR_LOWER_PREFIXES = ("wrote ", "copied ", "moved ", "deleted ")
+
+
+def _mutator_pretty(name: str, result: str) -> str:
+    """One-line summary for file-mutation tools: ``* Wrote 120 characters to src/x.py``."""
+    verb = _MUTATOR_VERBS[name]
+    if result.startswith("error:"):
+        return _pretty_line(f"* {verb} ", (f"({result})", "red"))
+    for prefix in _MUTATOR_LOWER_PREFIXES:
+        if result.startswith(prefix):
+            return _pretty_line(f"* {verb} {result[len(prefix) :]}")
+    return _pretty_line(f"* {verb}: {result}")
+
+
 _PRETTY_BUILDERS: dict[str, Callable[[str, str], str]] = {
     "read_file": _read_file_pretty,
     "tree": _tree_pretty,
@@ -395,6 +424,12 @@ _PRETTY_BUILDERS: dict[str, Callable[[str, str], str]] = {
     "run_argv": _run_argv_pretty,
     "run_argv_batch": _run_argv_batch_pretty,
     "fetch": _fetch_pretty,
+    "edit_replace": lambda _args, result: _mutator_pretty("edit_replace", result),
+    "edit_lineno": lambda _args, result: _mutator_pretty("edit_lineno", result),
+    "write_file": lambda _args, result: _mutator_pretty("write_file", result),
+    "copy_path": lambda _args, result: _mutator_pretty("copy_path", result),
+    "move_path": lambda _args, result: _mutator_pretty("move_path", result),
+    "delete_path": lambda _args, result: _mutator_pretty("delete_path", result),
 }
 
 
diff --git a/tests/test_cli/test_display.py b/tests/test_cli/test_display.py
index effeccd..10686d3 100644
--- a/tests/test_cli/test_display.py
+++ b/tests/test_cli/test_display.py
@@ -449,3 +449,33 @@ async def test_pretty_fetch_error(capsys: pytest.CaptureFixture[str]) -> None:
     )
     out = capsys.readouterr().out
     assert "* GET (error: fetch failed: boom)" in out
+
+
+async def test_pretty_mutators(capsys: pytest.CaptureFixture[str]) -> None:
+    cases = [
+        ("write_file", "wrote 120 characters to src/x.py", "* Wrote 120 characters to src/x.py"),
+        (
+            "edit_replace",
+            "replaced 1 occurrence in src/a.py ('x' → 'y')",
+            "* Edited: replaced 1 occurrence in src/a.py ('x' → 'y')",
+        ),
+        (
+            "edit_lineno",
+            "replaced lines 3-5 (3 lines; first: 'pass') with 2 lines in src/a.py",
+            "* Edited: replaced lines 3-5 (3 lines; first: 'pass') with 2 lines in src/a.py",
+        ),
+        ("copy_path", "copied file a.txt -> b.txt", "* Copied file a.txt -> b.txt"),
+        ("move_path", "moved directory src -> dst", "* Moved directory src -> dst"),
+        ("delete_path", "deleted file tmp/x.txt", "* Deleted file tmp/x.txt"),
+    ]
+    for name, content, expected in cases:
+        await render_events(_aiter([_pretty_call(name, "{}"), _result(content)]))
+        out = capsys.readouterr().out
+        assert expected in out, f"{name}: expected {expected!r} in {out!r}"
+        assert "[tool ok]" not in out
+
+
+async def test_pretty_mutator_error(capsys: pytest.CaptureFixture[str]) -> None:
+    await render_events(_aiter([_pretty_call("copy_path", "{}"), _result("error: source does not exist: x")]))
+    out = capsys.readouterr().out
+    assert "* Copied (error: source does not exist: x)" in out