excel_add_formula_with_documentation

WHAT IT DOES

What excel_add_formula_with_documentation does on Excel Finance MCP

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

WHY IT NEEDS A POLICY

Why excel_add_formula_with_documentation needs a policy

This tool modifies Excel workbooks by inserting formulas into cells. While formulas themselves are reversible (can be edited or deleted), the tool creates new data structures in the spreadsheet.

From the tool's definition Tool name 'excel_add_formula_with_documentation' and description 'Add a financial formula to a cell' indicate modification of spreadsheet data. The verb 'Add' and action of writing formulas to cells constitute data creation/modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

excel_add_formula_with_documentation Rate-limited

excel_add_formula_with_documentation 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": {
    "excel_add_formula_with_documentation": {
      "limits": [
        {
          "counter": "excel_add_formula_with_documentation_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 Excel Finance MCP, so you can run agents against it safely.

FAQ

Questions about excel_add_formula_with_documentation

What does the excel_add_formula_with_documentation tool do? +

Add a financial formula to a cell with complete documentation and validation. It is categorised as a Write tool in the Excel Finance 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 excel_add_formula_with_documentation? +

Register the Excel Finance MCP server in PolicyLayer and add a rule for excel_add_formula_with_documentation: 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 Excel Finance MCP. Nothing to install.

What risk level is excel_add_formula_with_documentation? +

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

Can I rate-limit excel_add_formula_with_documentation? +

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

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

excel_add_formula_with_documentation is provided by the Excel Finance MCP server (jeremycharlesgillespie/excel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.