Wait for text to appear or disappear or a specified time to pass
AI agents invoke browser_wait_for to trigger actions in Wuying AgentBay. 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 automation logic that depends on runtime conditions (text detection, time delays). While it doesn't directly modify data or delete content, it controls the flow and timing of browser operations, making it an Execute-class tool.
From the tool's definition Tool performs 'wait for text to appear or disappear or a specified time to pass' — this triggers conditional logic based on page state changes and can control timing of subsequent browser automation actions.
Documented attack patterns abuse exactly the kind of access browser_wait_for gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Wuying AgentBay, and nothing reaches the server without passing your rules. This is the rule we recommend for browser_wait_for:
{
"version": "1",
"default": "deny",
"tools": {
"browser_wait_for": {
"limits": [
{
"counter": "browser_wait_for_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}browser_wait_for 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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Wait for text to appear or disappear or a specified time to pass. It is categorised as a Execute tool in the Wuying AgentBay MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Wuying AgentBay MCP server in PolicyLayer and add a rule for browser_wait_for: 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 Wuying AgentBay. Nothing to install.
browser_wait_for 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_wait_for 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_wait_for. 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_wait_for is provided by the Wuying AgentBay MCP server (michael98671/agentbay). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Wuying AgentBay, 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.
59 Wuying AgentBay tools catalogued and risk-classified — across an index of 43,000+ MCP servers.