DragAndDrop
DragAndDrop action, Pick up a specific UI element and move it to a new position (e.g., reorder a card, move a file into a folder, sort list items). The element itself moves with your finger/mouse.. Parameters: from (object) - The position to be dragged; to (object) - The position to be dropped
This record as markdown: /tools/android/draganddrop.md
What DragAndDrop does on Android
AI agents invoke DragAndDrop to trigger actions in Android. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
to | object | Yes | The position to be dropped |
from | object | Yes | The position to be dragged |
android.deviceId | string | — | Android device ID (from adb devices) |
android.useScrcpy | boolean | — | Enable scrcpy accelerated screenshots |
android.aiActContext | string | — | Background knowledge passed to aiAct. Default: no extra context. |
android.waitAfterAction | number | — | Wait time in milliseconds after each action execution. Default: 300ms. |
android.replanningCycleLimit | integer | — | Maximum number of replanning cycles for aiAct. Default: model adapter default. |
android.screenshotShrinkFactor | number | — | Screenshot shrink factor before sending images to AI. Default: 1; high values may reduce recognition quality, especially on mobile. |
Parameters from the server's own tool schema.
Why DragAndDrop is rated High
This tool performs a UI interaction on an Android device — dragging and dropping elements. It triggers external operations on the device (moving files, reordering items) whose effects depend on the arguments. It's not purely destructive but can cause irreversible state changes (e.g., moving a file into a folder).
From the tool's definition DragAndDrop action, Pick up a specific UI element and move it to a new position (e.g., reorder a card, move a file into a folder, sort list items)
Risk signalsHigh parameter count (18 properties)
Attacks that exploit this kind of access
The rule that runs DragAndDrop safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Android, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For DragAndDrop, this is the rule to start with:
DragAndDrop stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Android, apply this rule, and every DragAndDrop call is checked against it from then on.
Questions about DragAndDrop
DragAndDrop action, Pick up a specific UI element and move it to a new position (e.g., reorder a card, move a file into a folder, sort list items). The element itself moves with your finger/mouse.. Parameters: from (object) - The position to be dragged; to (object) - The position to be dropped. It is categorised as a Execute tool in the Android MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
DragAndDrop accepts 8 parameters: to, from, android.deviceId, android.useScrcpy, android.aiActContext, android.waitAfterAction, android.replanningCycleLimit, android.screenshotShrinkFactor. Required: to, from. The full parameter table on this page comes from the server's own tool schema.
Register the Android MCP server in PolicyLayer and add a rule for DragAndDrop: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Android. Nothing to install.
DragAndDrop is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the DragAndDrop rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for DragAndDrop. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
DragAndDrop is provided by the Android MCP server (@midscene/android-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Android, and thousands of servers like it.
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