Adds the specified number of rows to the specified sheet. Accepts spreadsheetId, sheetname, count of rows to be added, startRow as arguments
AI agents use addRows to create or update resources in Mcp Google Sheets — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Google Sheets environment.
Adding rows to a spreadsheet creates new structure but is reversible (rows can be deleted). This is a classic Write operation: it modifies data and structure without permanent destruction or executing arbitrary code. Severity is medium because misuse could bloat a sheet or consume quota, but the operation is undoable and has limited blast radius compared to deletion or financial transactions.
From the tool's definition Tool description states it 'Adds the specified number of rows to the specified sheet' — a reversible data modification operation. The sibling tools include 'create', 'updateCells', and 'batchUpdate', all characteristic of Write operations on Google Sheets.
Documented attack patterns abuse exactly the kind of access addRows gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Google Sheets, and nothing reaches the server without passing your rules. This is the rule we recommend for addRows:
{
"version": "1",
"default": "deny",
"tools": {
"addRows": {
"limits": [
{
"counter": "addrows_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}addRows 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.
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Adds the specified number of rows to the specified sheet. Accepts spreadsheetId, sheetname, count of rows to be added, startRow as arguments. It is categorised as a Write tool in the Mcp Google Sheets MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Google Sheets MCP server in PolicyLayer and add a rule for addRows: 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 Mcp Google Sheets. Nothing to install.
addRows is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the addRows 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.
Set action: deny in the PolicyLayer policy for addRows. 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.
addRows is provided by the Mcp Google Sheets MCP server (rohans2/mcp-google-sheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Google Sheets, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
13 Mcp Google Sheets tools catalogued and risk-classified — across an index of 43,000+ MCP servers.