AI agents call get_bilibili_video_desc to retrieve information from Bilibili Subtitle Fetch without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata (video description) from Bilibili without modifying, deleting, or executing operations. The empty description reduces confidence slightly, but the naming convention and server context (subtitle/video fetching) indicate a read-only query operation with minimal risk if misused by an AI agent.
From the tool's definition Tool name is 'get_bilibili_video_desc' which retrieves video description data. Server description indicates subtitle fetching and video operations with no mention of write, delete, or financial operations.
Documented attack patterns abuse exactly the kind of access get_bilibili_video_desc gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Bilibili Subtitle Fetch, and nothing reaches the server without passing your rules. This is the rule we recommend for get_bilibili_video_desc:
{
"version": "1",
"default": "deny",
"tools": {
"get_bilibili_video_desc": {}
}
}get_bilibili_video_desc is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_bilibili_video_desc. It is categorised as a Read tool in the Bilibili Subtitle Fetch MCP Server, which means it retrieves data without modifying state.
Register the Bilibili Subtitle Fetch MCP server in PolicyLayer and add a rule for get_bilibili_video_desc: 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 Bilibili Subtitle Fetch. Nothing to install.
get_bilibili_video_desc 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 get_bilibili_video_desc 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 get_bilibili_video_desc. 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.
get_bilibili_video_desc is provided by the Bilibili Subtitle Fetch MCP server (initsnow/bilibili-subtitle-fetch). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Bilibili Subtitle Fetch, 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.
3 Bilibili Subtitle Fetch tools catalogued and risk-classified — across an index of 43,000+ MCP servers.