Create a new layer or get existing layer with specified properties
AI agents use create_or_get_layer to create or update resources in AutoCAD MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AutoCAD MCP Server environment.
This tool modifies the drawing by creating new layers (Write operation) when they don't exist, and retrieves them when they do. Layer creation is reversible (layers can be deleted), distinguishing it from Destructive. It does not execute arbitrary code (Execute), delete data (Destructive), or involve financial transactions (Financial).
From the tool's definition Tool creates a new layer or retrieves an existing layer with specified properties. The words 'create a new layer' and 'get existing layer' indicate write operations (layer creation) alongside read operations (retrieval).
Documented attack patterns abuse exactly the kind of access create_or_get_layer gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AutoCAD MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_or_get_layer:
{
"version": "1",
"default": "deny",
"tools": {
"create_or_get_layer": {
"limits": [
{
"counter": "create_or_get_layer_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_or_get_layer stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Create a new layer or get existing layer with specified properties. It is categorised as a Write tool in the AutoCAD MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the AutoCAD MCP Server MCP server in PolicyLayer and add a rule for create_or_get_layer: 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 AutoCAD MCP Server. Nothing to install.
create_or_get_layer 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 create_or_get_layer 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 create_or_get_layer. 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.
create_or_get_layer is provided by the AutoCAD MCP Server MCP server (thepiruthvirajan/autocad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 AutoCAD MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
21 AutoCAD MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.