在浏览器中打开论文获取途径页面，供用户自行下载。建议使用 get_paper_detail 返回的 accessLinks 中的 URL。
AI agents call download_paper to retrieve information from Library Access MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that retrieves and displays academic paper access information. While it involves browser navigation, it does not execute code, modify data, delete content, or involve financial transactions. The manual download step by the user and reliance on accessLinks from get_paper_detail confirms this is a data retrieval/query operation with no side effects.
From the tool's definition Tool opens a paper retrieval page in browser for user to manually download. Description indicates it retrieves access links and facilitates data retrieval without modifying or deleting content.
Documented attack patterns abuse exactly the kind of access download_paper gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Library Access MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for download_paper:
{
"version": "1",
"default": "deny",
"tools": {
"download_paper": {}
}
}download_paper is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
在浏览器中打开论文获取途径页面，供用户自行下载。建议使用 get_paper_detail 返回的 accessLinks 中的 URL。. It is categorised as a Read tool in the Library Access MCP MCP Server, which means it retrieves data without modifying state.
Register the Library Access MCP server in PolicyLayer and add a rule for download_paper: 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 Library Access MCP. Nothing to install.
download_paper 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 download_paper 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 download_paper. 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.
download_paper is provided by the Library Access MCP server (yang-kun-long/library-access-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Library Access MCP, 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.
7 Library Access MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.