gt_formula_create · Claude Flow MCP: Risk & Policy

WHAT IT DOES

What gt_formula_create does on Claude Flow

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

WHY IT NEEDS A POLICY

Why gt_formula_create needs a policy

This tool creates (Write) a custom formula definition, which adds new data to the system in a reversible manner. The impact is medium severity because formula definitions could affect calculations or workflows, but the blast radius is limited to formula definitions rather than core data or financial operations.

From the tool's definition Tool name 'gt_formula_create' and description 'Create a custom formula definition' indicate a create action that modifies state by adding a new formula to a system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gt_formula_create Rate-limited

gt_formula_create 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": {
    "gt_formula_create": {
      "limits": [
        {
          "counter": "gt_formula_create_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 Claude Flow, so you can run agents against it safely.

FAQ

Questions about gt_formula_create

What does the gt_formula_create tool do? +

Create a custom formula definition. It is categorised as a Write tool in the Claude Flow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gt_formula_create? +

Register the Claude Flow MCP server in PolicyLayer and add a rule for gt_formula_create: 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 Claude Flow. Nothing to install.

What risk level is gt_formula_create? +

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

Can I rate-limit gt_formula_create? +

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

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

gt_formula_create is provided by the Claude Flow MCP server (claude-flow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.