excel_append_rows

Append rows to an existing table in a workbook. Values are a 2D array of row data.

SERVERSage MCP SOURCEsagemcp/sagemcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sagemcp-sagemcp/excel-append-rows.md

WHAT IT DOES

What excel_append_rows does on Sage MCP

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

RISK

Why excel_append_rows is rated Medium

This tool adds new rows to an existing Excel table, which is a reversible write operation (rows can be deleted). It modifies data in a workbook but does not delete or overwrite existing data, placing it firmly in the Write category. Severity is medium because an AI agent could append large amounts of incorrect or malicious data to business-critical spreadsheets.

From the tool's definition Append rows to an existing table in a workbook

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs excel_append_rows safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Sage MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For excel_append_rows, this is the rule to start with:

excel_append_rows Rate-limited

excel_append_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": {
    "excel_append_rows": {
      "limits": [
        {
          "counter": "excel_append_rows_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Sage MCP, apply this rule, and every excel_append_rows call is checked against it from then on.

FAQ

Questions about excel_append_rows

What does the excel_append_rows tool do? +

Append rows to an existing table in a workbook. Values are a 2D array of row data. It is categorised as a Write tool in the Sage 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_append_rows? +

Register the Sage MCP server in PolicyLayer and add a rule for excel_append_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 Sage MCP. Nothing to install.

What risk level is excel_append_rows? +

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

Can I rate-limit excel_append_rows? +

Yes. Add a rate_limit block to the excel_append_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 excel_append_rows completely? +

Set action: deny in the PolicyLayer policy for excel_append_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 excel_append_rows? +

excel_append_rows is provided by the Sage MCP server (sagemcp/sagemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Sage, and thousands of servers like it.

This server

All 359 Sage tools →

Across the catalogue

The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →