Create multiple Excalidraw elements at once. For arrows, use startElementId/endElementId to bind arrows to shapes — Excalidraw auto-routes to element edges. Assign custom id to shapes so arrows can reference them.
AI agents use batch_create_elements to create or update resources in Excalidraw MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Excalidraw MCP Server environment.
This tool creates new diagram elements on the Excalidraw canvas. While write operations are generally reversible (elements can be deleted via delete_element), the batch nature of this tool combined with cross-referencing via IDs (arrows bound to shapes) means misuse could rapidly populate a canvas with many interconnected elements, requiring significant manual cleanup.
From the tool's definition Tool description states 'Create multiple Excalidraw elements at once' with support for binding arrows to shapes and assigning custom IDs. The verb 'create' and operation of adding new elements to the canvas are characteristic of write operations.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Create multiple Excalidraw elements at once. For arrows, use startElementId/endElementId to bind arrows to shapes — Excalidraw auto-routes to element edges. Assign custom id to shapes so arrows can reference them. It is categorised as a Write tool in the Excalidraw MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Excalidraw MCP Server MCP server in PolicyLayer and add a rule for batch_create_elements: 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.
batch_create_elements is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the batch_create_elements 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 batch_create_elements. 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.
batch_create_elements is provided by the Excalidraw MCP Server MCP server (kakacoding1/mcp_excalidraw). 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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