Download a file from the specified URL to the given local path. If the parent directory does not exist, it will be created automatically.
AI agents call oss_download_annon to retrieve information from Wuying AgentBay without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite being on a server that provides execution environments, oss_download_annon specifically performs file download/retrieval (Read category). It reads from a remote URL and writes locally, but does not execute code, delete data, or commit financial transactions. The 'annon' suffix suggests anonymous/unauthenticated access.
From the tool's definition Tool description states 'Download a file from the specified URL to the given local path' — this is a retrieval operation with no modification of source data or side effects beyond local file creation.
Documented attack patterns abuse exactly the kind of access oss_download_annon 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 oss_download_annon:
{
"version": "1",
"default": "deny",
"tools": {
"oss_download_annon": {}
}
}oss_download_annon is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Download a file from the specified URL to the given local path. If the parent directory does not exist, it will be created automatically. It is categorised as a Read tool in the Wuying AgentBay MCP Server, which means it retrieves data without modifying state.
Register the Wuying AgentBay MCP server in PolicyLayer and add a rule for oss_download_annon: 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.
oss_download_annon is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the oss_download_annon 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 oss_download_annon. 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.
oss_download_annon 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.