AI agents call get_resource_data to retrieve information from Evernote 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 binary data from resources (likely attachments or embedded content in Evernote notes) with no side effects. It is a read-only operation that queries and fetches data. While resources could theoretically contain sensitive information, the act of retrieval itself is non-destructive and has minimal blast radius compared to write, execute, or destructive operations.
From the tool's definition Tool name 'get_resource_data' and description 'Get resource binary data' indicate retrieval of existing resource content without modification or deletion.
Documented attack patterns abuse exactly the kind of access get_resource_data gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Evernote MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_resource_data:
{
"version": "1",
"default": "deny",
"tools": {
"get_resource_data": {}
}
}get_resource_data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get resource binary data. It is categorised as a Read tool in the Evernote MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Evernote MCP Server MCP server in PolicyLayer and add a rule for get_resource_data: 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 Evernote MCP Server. Nothing to install.
get_resource_data 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_resource_data 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_resource_data. 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_resource_data is provided by the Evernote MCP Server MCP server (kensou24/evernote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Evernote MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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52 Evernote MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.