Preview diagram generation output (canonical action parity).
AI agents call preview_diagram to retrieve information from Notemd MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool previews/displays diagram output without indicating any write, execute, or destructive side effects. 'Preview' implies a read-only display of what would be generated. Confidence is slightly reduced because 'canonical action parity' is vague and the description is minimal.
From the tool's definition Preview diagram generation output
Attacks that exploit this kind of access
Preview diagram generation output (canonical action parity). It is categorised as a Read tool in the Notemd MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Notemd MCP Server MCP server in PolicyLayer and add a rule for preview_diagram: 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 Notemd MCP Server. Nothing to install.
preview_diagram 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 preview_diagram 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 preview_diagram. 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.
preview_diagram is provided by the Notemd MCP Server MCP server (jacobinwwey/notemd-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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