AI agents use bulk_align to create or update resources in Uefn — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Uefn environment.
Based on the tool name, 'bulk_align' likely repositions or transforms multiple actors in the UEFN editor to align them spatially. This is a reversible modification (Write), similar to sibling tools like actor_move_to_folder and actor_set_label. However, with no description, confidence is low. Severity is medium since misuse could misplace many actors at once across a scene.
From the tool's definition Tool name 'bulk_align' suggests aligning multiple actors/objects in the editor. Description is empty and uninformative.
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access bulk_align gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Uefn, and nothing reaches the server without passing your rules. This is the rule we recommend for bulk_align:
{
"version": "1",
"default": "deny",
"tools": {
"bulk_align": {
"limits": [
{
"counter": "bulk_align_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}bulk_align 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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bulk_align. It is categorised as a Write tool in the Uefn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Uefn MCP server in PolicyLayer and add a rule for bulk_align: 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 Uefn. Nothing to install.
bulk_align 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 bulk_align 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 bulk_align. 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.
bulk_align is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Uefn, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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