AI agents use rename_node to create or update resources in Figma AI Bridge — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Figma AI Bridge environment.
This tool creates or modifies data reversibly within Figma designs. Renaming is a non-destructive change that can be easily undone and does not delete or execute arbitrary operations.
From the tool's definition The tool 'rename_node' modifies existing data in Figma by changing a node's name. The description explicitly states it performs a rename operation, which is a reversible modification to design metadata.
Documented attack patterns abuse exactly the kind of access rename_node gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Figma AI Bridge, and nothing reaches the server without passing your rules. This is the rule we recommend for rename_node:
{
"version": "1",
"default": "deny",
"tools": {
"rename_node": {
"limits": [
{
"counter": "rename_node_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}rename_node 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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Rename a node in Figma. It is categorised as a Write tool in the Figma AI Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Figma AI Bridge MCP server in PolicyLayer and add a rule for rename_node: 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 Figma AI Bridge. Nothing to install.
rename_node 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 rename_node 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 rename_node. 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.
rename_node is provided by the Figma AI Bridge MCP server (renfei-design/figma_ai_bridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Figma AI Bridge, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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64 Figma AI Bridge tools catalogued and risk-classified — across an index of 43,000+ MCP servers.