Export the FDS input file to disk.
AI agents use bulc_export_fds 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.
This tool creates or writes a file (FDS input file) to disk, which is a reversible data modification operation. It does not delete, destroy, or execute arbitrary code—it simply exports/persists existing simulation data. However, it modifies the filesystem, which warrants medium severity since uncontrolled exports could overwrite sensitive files or fill disk space.
From the tool's definition Tool name 'bulc_export_fds' and description 'Export the FDS input file to disk' indicate file creation/writing to the filesystem.
Attacks that exploit this kind of access
Export the FDS input file to disk. 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.
Register the BULC Building Designer MCP server in PolicyLayer and add a rule for bulc_export_fds: 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.
bulc_export_fds 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 bulc_export_fds 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 bulc_export_fds. 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.
bulc_export_fds 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.
bulc_export_fds is one line of BULC Building Designer's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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