AI agents invoke act_simple to trigger actions in Ruyipage. 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 executes browser actions on web page elements (e.g., click, focus, hover). While 'simple' suggests limited scope, browser actions can trigger significant side effects (form submissions, navigation, purchases) depending on arguments. Falls under Execute as it runs external browser operations whose effects depend on which element and action are targeted.
From the tool's definition "Perform a simple action on an element" — triggers browser automation interactions on DOM elements
Attacks that exploit this kind of access
Perform a simple action on an element. It is categorised as a Execute tool in the Ruyipage MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Ruyipage MCP server in PolicyLayer and add a rule for act_simple: 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 Ruyipage. Nothing to install.
act_simple 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 act_simple 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 act_simple. 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.
act_simple is provided by the Ruyipage MCP server (neverl805/ruyipage_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
act_simple is one line of Ruyipage's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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