Create a new directory or ensure a directory exists. Can create multiple nested directories in one operation. If the directory already exists, this operation will succeed silently.
AI agents use create_directory to create or update resources in Wuying AgentBay — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Wuying AgentBay environment.
This tool creates directories on the filesystem, which is a reversible write operation. While directories can be deleted to undo the action, the tool itself is not destructive—it only creates. The severity is medium rather than low because unauthorized directory creation in cloud execution environments could be leveraged to establish persistence, create path traversal opportunities, or organize malicious payloads.
From the tool's definition Tool description states it will 'Create a new directory' and 'create multiple nested directories in one operation.' This is a file system modification operation that creates new resources.
Documented attack patterns abuse exactly the kind of access create_directory 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 create_directory:
{
"version": "1",
"default": "deny",
"tools": {
"create_directory": {
"limits": [
{
"counter": "create_directory_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_directory stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Create a new directory or ensure a directory exists. Can create multiple nested directories in one operation. If the directory already exists, this operation will succeed silently. It is categorised as a Write tool in the Wuying AgentBay MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Wuying AgentBay MCP server in PolicyLayer and add a rule for create_directory: 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.
create_directory is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_directory 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 create_directory. 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.
create_directory 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.