Loads a sketch by name from user folder
AI agents call load_named to retrieve information from Open Brush MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves/loads an existing sketch file from storage. This is a read operation with no side effects—it does not modify, delete, or execute code. The action is reversible and limited to data access. Severity is low because loading a file has minimal blast radius; the worst outcome is accessing unintended sketch data.
From the tool's definition Tool name 'load_named' and description 'Loads a sketch by name from user folder' indicate retrieval of existing data without modification or deletion.
Attacks that exploit this kind of access
Loads a sketch by name from user folder. It is categorised as a Read tool in the Open Brush MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Open Brush MCP Server MCP server in PolicyLayer and add a rule for load_named: 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 Open Brush MCP Server. Nothing to install.
load_named 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 load_named 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 load_named. 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.
load_named is provided by the Open Brush MCP Server MCP server (moz411/openbrush-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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