Write design tokens back to Figma as Variables via the Figma REST API. Creates or updates variable collections.
Part of the Ui server.
Free to start. No card required.
AI agents use figma_push_variables to create or modify resources in Ui. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call figma_push_variables repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Ui.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"figma_push_variables": {
"limits": [
{
"counter": "figma_push_variables_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Ui policy for all 38 tools.
These attack patterns abuse exactly the kind of access figma_push_variables gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Write design tokens back to Figma as Variables via the Figma REST API. Creates or updates variable collections.. It is categorised as a Write tool in the Ui MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ui MCP server in PolicyLayer and add a rule for figma_push_variables: 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 Ui. Nothing to install.
figma_push_variables 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 figma_push_variables 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 figma_push_variables. 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.
figma_push_variables is provided by the Ui MCP server (@forgespace/ui-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 38 Ui tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.