batch_write_values
Overwrites several A1 ranges in ONE call — one write against the per-minute quota instead of one per range, so always prefer this over looping write_values. data is a list of {range, values} pairs; all are written with the same value_input_option (USER_ENTERED parses formulas/numbers/dates, RAW s...
This record as markdown: /tools/a1-x-tech-mcp-google-sheets/batch-write-values.md
What batch_write_values does on Mcp Google Sheets
AI agents use batch_write_values 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.
| Parameter | Type | Required | Description |
|---|---|---|---|
data | array | Yes | The ranges to write, each with its own 2-D values matrix. |
spreadsheet_id | string | Yes | The spreadsheet id — the long id from the URL (docs.google.com/spreadsheets/d/<spreadsheetId>/edit) or from create_spreadsheet / search_spreadsheets output. |
value_input_option | string | — | USER_ENTERED (default) parses formulas/numbers/dates; RAW stores literal strings. |
Parameters from the server's own tool schema.
Why batch_write_values is rated Medium
Modifies spreadsheet data reversibly across multiple ranges with batch efficiency.
From the tool's definition Overwrites several A1 ranges in ONE call, writes values
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs batch_write_values safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Google Sheets, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For batch_write_values, this is the rule to start with:
batch_write_values 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Google Sheets, apply this rule, and every batch_write_values call is checked against it from then on.
Questions about batch_write_values
Overwrites several A1 ranges in ONE call — one write against the per-minute quota instead of one per range, so always prefer this over looping write_values. data is a list of {range, values} pairs; all are written with the same value_input_option (USER_ENTERED parses formulas/numbers/dates, RAW stores literally). Returns totalUpdatedCells and a per-range responses[] breakdown. Like write_values, null entries skip cells rather than clearing them. 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.
batch_write_values accepts 3 parameters: data, spreadsheet_id, value_input_option. Required: data, spreadsheet_id. The full parameter table on this page comes from the server's own tool schema.
Register the Mcp Google Sheets MCP server in PolicyLayer and add a rule for batch_write_values: 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.
batch_write_values 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 batch_write_values 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 batch_write_values. 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.
batch_write_values is provided by the Mcp Google Sheets MCP server (@a1-x-tech/mcp-google-sheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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