bulc_set_fds_hvac · BULC Building Designer MCP

WHAT IT DOES

What bulc_set_fds_hvac does on BULC Building Designer

AI agents use bulc_set_fds_hvac to create or update resources in BULC Building Designer — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your BULC Building Designer environment.

WHY IT NEEDS A POLICY

Why bulc_set_fds_hvac needs a policy

This tool creates or modifies HVAC configuration within a fire simulation design project. It is reversible (can be reconfigured or undone via undo/redo support mentioned in server description), and does not delete data or execute arbitrary code. It affects simulation inputs rather than destroying data or triggering external financial/critical operations.

From the tool's definition Tool name and description indicate it 'Configure a furniture item as an FDS HVAC', which modifies simulation parameters in the BULC fire simulation software. The verb 'Configure' implies creating or updating settings that affect the model state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bulc_set_fds_hvac Rate-limited

bulc_set_fds_hvac 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bulc_set_fds_hvac": {
      "limits": [
        {
          "counter": "bulc_set_fds_hvac_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches BULC Building Designer, so you can run agents against it safely.

FAQ

Questions about bulc_set_fds_hvac

What does the bulc_set_fds_hvac tool do? +

Configure a furniture item as an FDS HVAC (supply or exhaust vent). It is categorised as a Write tool in the BULC Building Designer MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on bulc_set_fds_hvac? +

Register the BULC Building Designer MCP server in PolicyLayer and add a rule for bulc_set_fds_hvac: 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 BULC Building Designer. Nothing to install.

What risk level is bulc_set_fds_hvac? +

bulc_set_fds_hvac is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit bulc_set_fds_hvac? +

Yes. Add a rate_limit block to the bulc_set_fds_hvac 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.

How do I block bulc_set_fds_hvac completely? +

Set action: deny in the PolicyLayer policy for bulc_set_fds_hvac. 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.

What MCP server provides bulc_set_fds_hvac? +

bulc_set_fds_hvac is provided by the BULC Building Designer MCP server (using76/bulc_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.