Downloads a specific visual asset (e.g., SVG icon, PNG image) for a given layer from Zeplin and saves it to a local path. Use this tool when an asset referenced in the design (obtained from
AI agents call download_layer_asset to retrieve information from Zeplin MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing design assets (SVG icons, PNG images) from Zeplin and saves them locally. It performs no modifications to Zeplin data, no code execution on external systems, and no destructive operations. It is a straightforward data retrieval operation, fitting the 'Read' category.
From the tool's definition Tool 'downloads' and 'saves' a visual asset to a local path. The description indicates retrieval of design assets without modification of the source design or data in Zeplin. The action is read-only data transfer from Zeplin to local storage.
Documented attack patterns abuse exactly the kind of access download_layer_asset gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Zeplin MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for download_layer_asset:
{
"version": "1",
"default": "deny",
"tools": {
"download_layer_asset": {}
}
}download_layer_asset 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.
Downloads a specific visual asset (e.g., SVG icon, PNG image) for a given layer from Zeplin and saves it to a local path. Use this tool when an asset referenced in the design (obtained from. It is categorised as a Read tool in the Zeplin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Zeplin MCP Server MCP server in PolicyLayer and add a rule for download_layer_asset: 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 Zeplin MCP Server. Nothing to install.
download_layer_asset 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_layer_asset 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_layer_asset. 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_layer_asset is provided by the Zeplin MCP Server MCP server (zeplin/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Zeplin MCP Server, 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.
4 Zeplin MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.