core/cli: YOLO mode on|off|once for soft destructive confirms

Session /yolo and --yes skip classify_danger prompts; once expires after the
next user turn. Hard path/command denylists unchanged.

src/plyngent/agent/tools.py

@@ -191,6 +191,11 @@ class ToolRegistry:
     def __len__(self) -> int:
         return len(self._tools)
 
+    @property
+    def soft_confirm(self) -> bool:
+        """True when dangerous tools are gated by ``on_confirm``."""
+        return self._danger is not None and self._on_confirm is not None
+
     async def _invoke(self, definition: ToolDefinition, args: dict[str, object]) -> str:
         try:
             result = definition.handler(**args)

src/plyngent/cli/app.py

@@ -171,9 +171,12 @@ async def _run_oneshot(state: ReplState, prompt_text: str) -> int:
     try:
         ok = await run_user_text_with_retries(state.agent, prompt_text, delays=())
     except asyncio.CancelledError:
+        state.expire_yolo_once(quiet=True)
         return EXIT_CANCELLED
     except KeyboardInterrupt:
+        state.expire_yolo_once(quiet=True)
         return EXIT_CANCELLED
+    state.expire_yolo_once(quiet=True)
     return EXIT_OK if ok else EXIT_TURN_FAILED
 
 
@@ -206,7 +209,10 @@ async def _run_chat(  # noqa: C901, PLR0912 — chat orchestration
             _warn_recoverable_providers(store.recoverable_providers)
 
     _setup_workspace_and_hooks(store, workspace, interactive=interactive)
-    confirm_destructive: bool | None = False if yes else None
+    # --yes forces sticky YOLO; else derive from config.confirm_destructive.
+    from plyngent.cli.state import YoloMode
+
+    yolo: YoloMode | None = "on" if yes else None
 
     memory = await MemoryStore.open(_database_config(store, quiet=quiet or oneshot))
     try:
@@ -255,7 +261,7 @@ async def _run_chat(  # noqa: C901, PLR0912 — chat orchestration
             max_rounds=max_rounds,
             stream_enabled=stream,
             interactive_limits=interactive,
-            confirm_destructive=confirm_destructive,
+            yolo=yolo,
         )
         if not quiet and not oneshot:
             click.secho(f"workspace: {state.workspace}", fg="bright_black", err=True)
@@ -367,7 +373,7 @@ def main(ctx: click.Context, log_level: str) -> None:
     "--yes",
     is_flag=True,
     default=False,
-    help="Allow destructive tools without confirm (one-shot / non-interactive).",
+    help="Enable YOLO: skip destructive-tool confirms (sticky for this process).",
 )
 @click.option(
     "--quiet",

src/plyngent/cli/repl.py

@@ -25,12 +25,14 @@ def _echo_user(text: str) -> None:
 async def run_repl(state: ReplState) -> None:
     """Interactive chat loop with readline editing, history, and Tab completion."""
     setup_readline(state)
+    yolo = state.effective_yolo()
+    yolo_part = f"  yolo={yolo}" if yolo != "off" else ""
     click.echo(
         f"plyngent chat  provider={state.provider_name}  model={state.model}  "
         f"session={state.session_id}  tools={'on' if state.tools_enabled else 'off'}  "
         f"rounds={state.max_rounds}  messages={len(state.agent.messages)}  "
         f"stream={'on' if state.agent.stream else 'off'}  "
-        f"verbose={'on' if state.verbose else 'off'}"
+        f"verbose={'on' if state.verbose else 'off'}{yolo_part}"
     )
     click.echo('Type /help for commands. Multiline: """ … """. Empty line is ignored.')
 
@@ -52,8 +54,14 @@ async def run_repl(state: ReplState) -> None:
                 text = state.pending_user_text
                 state.pending_user_text = None
                 _echo_user(text)
-                _ = await run_user_text_with_retries(state.agent, text)
+                try:
+                    _ = await run_user_text_with_retries(state.agent, text)
+                finally:
+                    state.expire_yolo_once()
             continue
 
         _echo_user(entry)
-        _ = await run_user_text_with_retries(state.agent, entry)
+        try:
+            _ = await run_user_text_with_retries(state.agent, entry)
+        finally:
+            state.expire_yolo_once()

src/plyngent/cli/slash.py

@@ -23,13 +23,14 @@ from plyngent.runtime import ProviderNotSupportedError
 if TYPE_CHECKING:
     from collections.abc import Awaitable, Sequence
 
-    from plyngent.cli.state import ReplState
+    from plyngent.cli.state import ReplState, YoloMode
     from plyngent.lmproto.openai_compatible.model import AnyChatMessage
 
 _DEFAULT_HISTORY_LINES = 20
 _CONTENT_PREVIEW = 200
 _COMPACT_PREVIEW = 400
 _ON_OFF_CHOICES = ("on", "off")
+_YOLO_MODE_CHOICES = ("on", "off", "once")
 _EXPORT_FORMAT_CHOICES = ("md", "json")
 
 HELP_FOOTER = (
@@ -38,7 +39,7 @@ HELP_FOOTER = (
     "works after resume, not only via readline history). Auto-retry: 10s/20s/30s.\n"
     "\n"
     "Tab completes slash commands and some arguments (provider, model, tools,\n"
-    "stream, verbose, export). Use --session ID or /resume to continue a prior\n"
+    "stream, verbose, yolo, export). Use --session ID or /resume to continue a prior\n"
     "chat after restart.\n"
     "\n"
     'Multiline: start a message with """ then end a later line with """.\n'
@@ -86,6 +87,30 @@ class OnOffParam(click.ParamType[bool]):
 ON_OFF = OnOffParam()
 
 
+class YoloModeParam(click.ParamType[str]):
+    """Accept on|off|once for soft destructive-tool confirms."""
+
+    name: str = "yolo_mode"
+
+    @override
+    def convert(self, value: Any, param: click.Parameter | None, ctx: click.Context | None) -> str:
+        if isinstance(value, str) and value in _YOLO_MODE_CHOICES:
+            return value
+        token = str(value).strip().lower()
+        if token in _YOLO_MODE_CHOICES:
+            return token
+        msg = "expected on, off, or once"
+        raise click.BadParameter(msg, ctx=ctx, param=param)
+
+    @override
+    def shell_complete(self, ctx: click.Context, param: click.Parameter, incomplete: str) -> list[CompletionItem]:
+        del ctx, param
+        return _filter_choices(incomplete, _YOLO_MODE_CHOICES)
+
+
+YOLO_MODE = YoloModeParam()
+
+
 class ExportFormatParam(click.ParamType[str]):
     """First token of /export: md|json (or a path if not a format)."""
 
@@ -355,7 +380,8 @@ def status_cmd(state: ReplState) -> None:
         f"tools={'on' if state.tools_enabled else 'off'}  "
         f"rounds={state.max_rounds}  "
         f"stream={'on' if state.agent.stream else 'off'}  "
-        f"verbose={'on' if state.verbose else 'off'}\n"
+        f"verbose={'on' if state.verbose else 'off'}  "
+        f"yolo={state.effective_yolo()}\n"
         f"context_tokens={ctx_tilde}{ctx_tokens}/{ctx_budget} ({ctx_tag})  "
         f"context_chars={ctx_chars}  "
         f"tool_result_max={state.agent.max_tool_result_chars}\n"
@@ -698,6 +724,24 @@ def tools_cmd(state: ReplState, enabled: bool | None) -> None:  # noqa: FBT001
     click.echo(f"tools={'on' if enabled else 'off'}")
 
 
+@slash.command("yolo")
+@click.argument("mode", required=False, type=YOLO_MODE, metavar="[on|off|once]")
+@click.pass_obj
+def yolo_cmd(state: ReplState, mode: str | None) -> None:
+    """Show or set YOLO mode for soft destructive-tool confirms.
+
+    ``off`` (default when config ``confirm_destructive`` is true): prompt on
+    delete/move/overwrite (deny in non-TTY). ``on``: skip confirms for the
+    process. ``once``: skip for the next user turn only, then return to ``off``.
+    Path/command denylists still apply. Omit the argument to print the value.
+    """
+    if mode is None:
+        click.echo(f"yolo={state.effective_yolo()}")
+        return
+    state.set_yolo(cast("YoloMode", mode))
+    click.echo(f"yolo={state.effective_yolo()}")
+
+
 @slash.command("stream")
 @click.argument("enabled", required=False, type=ON_OFF, metavar="[on|off]")
 @click.pass_obj

src/plyngent/cli/state.py

@@ -4,7 +4,7 @@ import contextlib
 import time
 from dataclasses import dataclass, field
 from pathlib import Path
-from typing import TYPE_CHECKING, cast
+from typing import TYPE_CHECKING, Literal, cast
 
 from plyngent.agent import ChatAgent, ChatClient, ToolRegistry
 from plyngent.agent.loop import DEFAULT_MAX_ROUNDS
@@ -25,6 +25,8 @@ if TYPE_CHECKING:
     from plyngent.memory import MemoryStore
     from plyngent.memory.database.schema import Session as SessionRow
 
+type YoloMode = Literal["off", "on", "once"]
+
 
 @dataclass
 class ReplState:
@@ -44,8 +46,9 @@ class ReplState:
     markdown_enabled: bool = True
     # One-shot / scripts: never prompt to raise tool-loop limits.
     interactive_limits: bool = True
-    # When False, skip destructive-tool confirms (e.g. --yes).
-    confirm_destructive: bool | None = None
+    # Soft destructive-tool confirms: None → derive from config.confirm_destructive.
+    # off = confirm; on = skip (sticky); once = skip next user turn then off.
+    yolo: YoloMode | None = None
     # Set by /edit; REPL sends as the next user turn then clears.
     pending_user_text: str | None = None
     client: ChatClient = field(init=False)
@@ -77,10 +80,32 @@ class ReplState:
             raise RuntimeError(msg)
         return key
 
-    def _confirm_destructive(self) -> bool:
-        if self.confirm_destructive is not None:
-            return self.confirm_destructive
-        return self.config.agent_config.confirm_destructive
+    def effective_yolo(self) -> YoloMode:
+        """Resolved YOLO mode (session override or config default)."""
+        if self.yolo is not None:
+            return self.yolo
+        return "off" if self.config.agent_config.confirm_destructive else "on"
+
+    def soft_confirm_enabled(self) -> bool:
+        """Whether destructive tools should prompt (or deny non-interactively)."""
+        return self.effective_yolo() == "off"
+
+    def set_yolo(self, mode: YoloMode) -> None:
+        """Set YOLO mode; rebuild tool registry when soft-confirm hooks change."""
+        prev = self.soft_confirm_enabled()
+        self.yolo = mode
+        if prev != self.soft_confirm_enabled():
+            self.rebuild_client()
+
+    def expire_yolo_once(self, *, quiet: bool = False) -> None:
+        """If mode is ``once``, drop back to ``off`` after a user turn."""
+        if self.effective_yolo() != "once":
+            return
+        self.set_yolo("off")
+        if not quiet:
+            import click
+
+            click.secho("yolo=off (once expired)", fg="bright_black", err=True)
 
     def _tool_registry(self) -> ToolRegistry | None:
         if not self.tools_enabled:
@@ -88,7 +113,7 @@ class ReplState:
         from plyngent.cli.limits import prompt_confirm_tool_async
         from plyngent.tools.danger import classify_danger
 
-        if self._confirm_destructive():
+        if self.soft_confirm_enabled():
             return ToolRegistry(
                 list(DEFAULT_TOOLS),
                 danger=classify_danger,

tests/test_agent/test_confirm.py

@@ -56,4 +56,14 @@ async def test_confirm_deny() -> None:
 
 async def test_no_hooks_skips_confirm() -> None:
     registry = ToolRegistry([delete_path])
+    assert registry.soft_confirm is False
     assert await registry.execute("delete_path", '{"path": "a.txt"}') == "deleted a.txt"
+
+
+async def test_soft_confirm_property() -> None:
+    def on_confirm(name: str, args: Mapping[str, object], reason: str) -> bool:
+        del name, args, reason
+        return True
+
+    gated = ToolRegistry([delete_path], danger=classify_danger, on_confirm=on_confirm)
+    assert gated.soft_confirm is True

tests/test_cli/test_readline_setup.py

@@ -181,3 +181,5 @@ def test_complete_slash_args_from_registry(tmp_path: object) -> None:
     assert complete_slash_args(state, "/model", "a") == ["alpha"]
     assert complete_slash_args(state, "/export", "j") == ["json"]
     assert complete_slash_args(state, "/help", "st") == ["status", "stream"]
+    assert complete_slash_args(state, "/yolo", "") == ["on", "off", "once"]
+    assert complete_slash_args(state, "/yolo", "o") == ["on", "off", "once"]

tests/test_cli/test_repl_commands.py

@@ -341,6 +341,63 @@ async def test_verbose_toggle(state: ReplState) -> None:
     assert get_verbose_tool_results() is False
 
 
+async def test_yolo_toggle(state: ReplState, capsys: pytest.CaptureFixture[str]) -> None:
+    assert state.effective_yolo() == "off"
+    assert state.soft_confirm_enabled() is True
+    assert await handle_slash(state, "/yolo") is True
+    assert "yolo=off" in capsys.readouterr().out
+
+    assert await handle_slash(state, "/yolo on") is True
+    assert state.effective_yolo() == "on"
+    assert state.soft_confirm_enabled() is False
+    assert "yolo=on" in capsys.readouterr().out
+
+    assert await handle_slash(state, "/yolo once") is True
+    assert state.effective_yolo() == "once"
+    assert state.soft_confirm_enabled() is False
+
+    state.expire_yolo_once(quiet=True)
+    assert state.effective_yolo() == "off"
+    assert state.soft_confirm_enabled() is True
+
+    assert await handle_slash(state, "/yolo once") is True
+    state.expire_yolo_once()
+    err = capsys.readouterr().err
+    assert "yolo=off (once expired)" in err
+    assert state.effective_yolo() == "off"
+
+
+async def test_yolo_rebuilds_tool_registry(tmp_path: Path) -> None:
+    _ = set_workspace_root(tmp_path)
+    memory = await MemoryStore.open(DatabaseConfig())
+    provider = OpenAIProvider(access_key_or_token="sk-test")
+    config = ConfigStore(path=tmp_path / "plyngent.toml", document=tomlkit.document())
+    config.providers = {"local": provider}
+    st = ReplState(
+        config=config,
+        memory=memory,
+        workspace=tmp_path,
+        provider_name="local",
+        provider=provider,
+        model="gpt-test",
+        tools_enabled=True,
+    )
+    try:
+        assert st.agent.tools is not None
+        assert st.agent.tools.soft_confirm is True
+        st.set_yolo("on")
+        assert st.agent.tools is not None
+        assert st.agent.tools.soft_confirm is False
+        st.set_yolo("once")
+        assert st.agent.tools is not None
+        assert st.agent.tools.soft_confirm is False
+        st.set_yolo("off")
+        assert st.agent.tools is not None
+        assert st.agent.tools.soft_confirm is True
+    finally:
+        await memory.close()
+
+
 async def test_resume(state: ReplState) -> None:
     sid = state.session_id
     assert sid is not None
@@ -378,6 +435,7 @@ async def test_status_shows_context_tokens(state: ReplState, capsys: pytest.Capt
     assert "(est)" in out  # no API usage yet
     assert "context_chars=" in out
     assert "tool_result_max=" in out
+    assert "yolo=off" in out
     assert str(state.workspace) in out
 
     state.agent.last_request_usage = TokenUsage(