bulk_update_rows · Smartsheet MCP Server MCP: Risk & Policy

WHAT IT DOES

What bulk_update_rows does on Smartsheet MCP Server

AI agents use bulk_update_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 bulk_update_rows needs a policy

This tool creates or modifies data (rows) in a reversible manner—updates can be undone or corrected. However, the blast radius is significant because it operates on multiple rows simultaneously, potentially affecting many records in one operation. This makes it Write category with high severity, not Execute, since the operation itself is data modification rather than arbitrary code execution.

From the tool's definition Tool name 'bulk_update_rows' and description 'Updates multiple rows in a sheet in a single operation' indicate reversible modification of data at scale.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bulk_update_rows Rate-limited

bulk_update_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": {
    "bulk_update_rows": {
      "limits": [
        {
          "counter": "bulk_update_rows_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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 bulk_update_rows

What does the bulk_update_rows tool do? +

Updates multiple rows in a sheet in a single operation. 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 bulk_update_rows? +

Register the Smartsheet MCP Server MCP server in PolicyLayer and add a rule for bulk_update_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 bulk_update_rows? +

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

Can I rate-limit bulk_update_rows? +

Yes. Add a rate_limit block to the bulk_update_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 bulk_update_rows completely? +

Set action: deny in the PolicyLayer policy for bulk_update_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 bulk_update_rows? +

bulk_update_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.