Drag left mouse button to a given position
AI agents invoke browser_mouse_drag_xy to trigger actions in Better Playwright MCP. 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.
This tool performs a browser action (mouse drag) that can interact with UI elements in arbitrary ways depending on arguments. It's an Execute-class tool as it triggers external browser operations whose effects depend on the coordinates and context provided. Misuse could manipulate web interfaces in unintended ways, but impact is generally limited to the current browser session.
From the tool's definition "Drag left mouse button to a given position" — triggers a browser mouse drag interaction at specified coordinates
Documented attack patterns abuse exactly the kind of access browser_mouse_drag_xy gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Better Playwright MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for browser_mouse_drag_xy:
{
"version": "1",
"default": "deny",
"tools": {
"browser_mouse_drag_xy": {
"limits": [
{
"counter": "browser_mouse_drag_xy_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}browser_mouse_drag_xy 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.
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Drag left mouse button to a given position. It is categorised as a Execute tool in the Better Playwright MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Better Playwright MCP server in PolicyLayer and add a rule for browser_mouse_drag_xy: 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 Better Playwright MCP. Nothing to install.
browser_mouse_drag_xy 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 browser_mouse_drag_xy 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 browser_mouse_drag_xy. 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.
browser_mouse_drag_xy is provided by the Better Playwright MCP server (livoras/better-playwright-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Better Playwright MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
29 Better Playwright MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.