feat: harden agent verification and runtime contracts

Introduce two-gate checker settlement, explicit graph visibility and checkpoints, structured LLM reliability, centralized action specifications, and corresponding tests and design documentation.
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somew1nd committed 2026-08-31 20:42:24 -07:00
1 parent ddfa420945
commit cbe8f4f0c6
106 files changed
+11542 -4445

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@@ -42,6 +42,7 @@ from artemis.context import ArtemisContext
from artemis.controllers.unified_controller import UnifiedMobileController
from artemis.data_engine.trace import TraceSpan
from artemis.mcp.action_manifest import OPTIONAL_ACTIONS, REQUIRED_ACTIONS
from artemis.mcp.action_specs import exception_prefix
from artemis.mcp.action_session import ActionSession, get_action_session
from artemis.mcp.action_types import ActionCode, ActionResult
from artemis.mcp.actuators.adb import AdbActuator
@@ -66,19 +67,6 @@ logger = get_logger(__name__)
__all__ = ["McpActionExecutor"]
# Wording for wrapped exceptions; matches the historical executor `except` arms.
_EXCEPTION_PREFIX = {
"click": "Error during click",
"click_sequence": "Error executing click sequence",
"long_press": "Error during long press",
"input_text": "Error during input text",
"swipe": "Error during swipe",
"press_key": "Error during press_key",
"manage_app": "Error during manage_app",
"wait_for_delay": "Error during wait_for_delay",
"wait_for_text": "Error during wait_for_text",
}
class _ArgError(ValueError):
"""Argument-translation failure whose message is already fully formatted."""
@@ -94,19 +82,14 @@ class McpActionExecutor:
actuator: AdbActuator | None = None,
):
self.ctx = ctx
self.actuator = (
actuator or getattr(ctx, "actuator", None) or AdbActuator(ctx, controller)
)
self.actuator = actuator or getattr(ctx, "actuator", None) or AdbActuator(ctx, controller)
self.controller = self.actuator.controller
self._session: ActionSession | None = None
@property
def action_tool_names(self) -> frozenset[str]:
"""Device actions plus backend extension names -- the dynamic dispatch set."""
return (
(REQUIRED_ACTIONS | OPTIONAL_ACTIONS)
| {e.name for e in self.actuator.extensions()}
)
return (REQUIRED_ACTIONS | OPTIONAL_ACTIONS) | {e.name for e in self.actuator.extensions()}
async def _session_or_start(self) -> ActionSession:
if self._session is None or not self._session.started:
@@ -129,9 +112,7 @@ class McpActionExecutor:
return await self._execute_agent_tool(raw_name, name, args, tool_call_id, state)
if raw_name in self.action_tool_names:
return await self._execute_device_action(
raw_name, name, args, tool_call_id, state
)
return await self._execute_device_action(raw_name, name, args, tool_call_id, state)
return ToolExecutionResult(
tool_call_id=tool_call_id,
@@ -188,15 +169,12 @@ class McpActionExecutor:
try:
img_bytes = Path(shot_path).read_bytes()
except Exception as read_err:
logger.warning(
f"Failed to read observed screenshot: {read_err}"
)
logger.warning(f"Failed to read observed screenshot: {read_err}")
except _ArgError as e:
res = ActionResult.failure(raw_name, str(e), code=ActionCode.INVALID_ARGS)
message = str(e)
except Exception as e:
prefix = _EXCEPTION_PREFIX.get(raw_name, f"Error during {raw_name}")
message = f"{prefix}: {e}"
message = f"{exception_prefix(raw_name)}: {e}"
res = ActionResult.failure(raw_name, message, detail=repr(e))
if shot_path:
@@ -365,9 +343,7 @@ class McpActionExecutor:
pass
if not isinstance(sequence, (list, tuple)):
raise _ArgError(
f"Error during click sequence: Invalid sequence format: {sequence}"
)
raise _ArgError(f"Error during click sequence: Invalid sequence format: {sequence}")
width = getattr(self.ctx.device, "device_width", 1080) if self.ctx.device else 1080
height = getattr(self.ctx.device, "device_height", 2400) if self.ctx.device else 2400
@@ -389,15 +365,11 @@ class McpActionExecutor:
elif isinstance(target, (list, tuple)) and len(target) == 2:
nx, ny = int(target[0]), int(target[1])
else:
raise _ArgError(
f"Error during click sequence: Invalid target format: {raw_target}"
)
raise _ArgError(f"Error during click sequence: Invalid target format: {raw_target}")
resolved.append([nx, ny])
return resolved
def _translate_swipe(
self, args: dict[str, Any], state: Any
) -> tuple[str, dict[str, Any], Any]:
def _translate_swipe(self, args: dict[str, Any], state: Any) -> tuple[str, dict[str, Any], Any]:
width = getattr(self.ctx.device, "device_width", 1080) if self.ctx.device else 1080
height = getattr(self.ctx.device, "device_height", 2400) if self.ctx.device else 2400
default_duration = args.get("duration", 400)
@@ -411,7 +383,7 @@ class McpActionExecutor:
direction=target,
target=args.get("target"),
indexed_elements=getattr(state, "indexed_elements", None) if state else None,
ui_hierarchy=getattr(state, "ui_tree", None) if state else None,
ui_hierarchy=getattr(state, "latest_ui_hierarchy", None) if state else None,
width=width,
height=height,
duration=final_duration,
@@ -441,10 +413,7 @@ class McpActionExecutor:
def finalize(res: ActionResult) -> str:
if not res.ok:
return f"Error dragging: {res.detail}"
return (
"Swipe completed successfully. Swiped from"
f" [{x1}, {y1}] to [{x2}, {y2}]."
)
return f"Swipe completed successfully. Swiped from [{x1}, {y1}] to [{x2}, {y2}]."
return (
"swipe",
@@ -494,9 +463,7 @@ class McpActionExecutor:
text_summary=text,
)
async def _read_note(
self, key: str, start_line: int | None, end_line: int | None
) -> str:
async def _read_note(self, key: str, start_line: int | None, end_line: int | None) -> str:
try:
base_dir = self.ctx.data_engine.base_dir if self.ctx.data_engine else None
if not base_dir:
@@ -514,9 +481,7 @@ class McpActionExecutor:
except Exception as e:
return format_list_notes_failure(str(e))
async def _ask_explorer(
self, query: str, context_feedback: str | None, state: Any
) -> str:
async def _ask_explorer(self, query: str, context_feedback: str | None, state: Any) -> str:
# Imported lazily: the explorer stack is heavy and recursive (it spawns an LLM
# sub-agent), which is also why it must never live behind the action server.
from artemis.tools.explorer_tool import _run_explorer_logic