List all Excalidraw diagrams previously generated by this server.
AI agents call list_diagrams to retrieve information from Excalidraw 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 and displays a list of existing diagrams without modifying, deleting, or executing any operations. It is purely informational (Read category). The severity is low because accessing a local list of diagram metadata poses minimal risk even if misused by an AI agent—no data is destroyed, modified, or executed.
From the tool's definition Tool name 'list_diagrams' and description 'List all Excalidraw diagrams previously generated by this server' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all Excalidraw diagrams previously generated by this server. It is categorised as a Read tool in the Excalidraw MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Excalidraw MCP Server MCP server in PolicyLayer and add a rule for list_diagrams: 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 Excalidraw MCP Server. Nothing to install.
list_diagrams 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 list_diagrams 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 list_diagrams. 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.
list_diagrams is provided by the Excalidraw MCP Server MCP server (jeel00dev/exclalidraw_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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