add_rows · Smartsheet MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_rows does on Smartsheet MCP Server

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

WHY IT NEEDS A POLICY

Why add_rows needs a policy

This tool creates new data rows in a sheet, which is a reversible modification operation. It does not execute arbitrary code, delete data, or move money, placing it in the Write category. Severity is medium because bulk row additions could impact business workflows and data integrity if misused by an agent, but the operation can be undone by deleting the added rows.

From the tool's definition Tool name 'add_rows' and description 'Adds new rows to a sheet' indicate creation of new data entries in a Smartsheet document.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_rows Rate-limited

add_rows 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": {
    "add_rows": {
      "limits": [
        {
          "counter": "add_rows_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 Smartsheet MCP Server, so you can run agents against it safely.

FAQ

Questions about add_rows

What does the add_rows tool do? +

Adds new rows to a sheet. It is categorised as a Write tool in the Smartsheet MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_rows? +

Register the Smartsheet MCP Server MCP server in PolicyLayer and add a rule for add_rows: 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 Smartsheet MCP Server. Nothing to install.

What risk level is add_rows? +

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

Can I rate-limit add_rows? +

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

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

add_rows is provided by the Smartsheet MCP Server MCP server (thomaswtwrt/smar-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.