Get the list of downloaded files
AI agents call browser_get_download_list to retrieve information from Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about downloaded files in the browser without side effects. It does not modify, delete, or execute anything. It simply returns a list of files that have already been downloaded, making it a Read operation with low severity.
From the tool's definition Tool name 'browser_get_download_list' and description 'Get the list of downloaded files' indicate a read-only operation that retrieves/queries existing data without modification, deletion, or execution.
Documented attack patterns abuse exactly the kind of access browser_get_download_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Search, and nothing reaches the server without passing your rules. This is the rule we recommend for browser_get_download_list:
{
"version": "1",
"default": "deny",
"tools": {
"browser_get_download_list": {}
}
}browser_get_download_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the list of downloaded files. It is categorised as a Read tool in the Search MCP Server, which means it retrieves data without modifying state.
Register the Search MCP server in PolicyLayer and add a rule for browser_get_download_list: 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 Search. Nothing to install.
browser_get_download_list 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 browser_get_download_list 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_get_download_list. 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_get_download_list is provided by the Search MCP server (@agent-infra/mcp-server-search). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Search, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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36 Search tools catalogued and risk-classified — across an index of 43,000+ MCP servers.