store_project_data

THE RISK

Medium Risk

Why store_project_data needs a policy

This tool writes project metadata to a local database, which is a reversible write operation. It does not delete data, execute code, or involve financial transactions. Severity is medium because misuse could corrupt or overwrite important project metadata, but it is limited to metadata and is reversible.

From the tool's definition 'Store or update Revit project metadata in the local database' — creates or modifies data reversibly with a timestamp for later retrieval

Documented attack patterns abuse exactly the kind of access store_project_data gives an agent:

POLICY

How to control store_project_data

PolicyLayer is an MCP gateway — it sits between your AI agents and Revit MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for store_project_data:

policy.json

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

store_project_data 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.

Create a free account and register Revit MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about store_project_data

What does the store_project_data tool do? +

Store or update Revit project metadata in the local database. This captures project information with a timestamp for later retrieval. It is categorised as a Write tool in the Revit MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on store_project_data? +

Register the Revit MCP server in PolicyLayer and add a rule for store_project_data: 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 Revit MCP. Nothing to install.

What risk level is store_project_data? +

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

Can I rate-limit store_project_data? +

Yes. Add a rate_limit block to the store_project_data 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 store_project_data completely? +

Set action: deny in the PolicyLayer policy for store_project_data. 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 store_project_data? +

store_project_data is provided by the Revit MCP server (mcp-servers-for-revit/revit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Revit MCP tool call.

Start from Revit MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →