Get values from a specified range in a Google Sheets spreadsheet
AI agents call sheets_get_values to retrieve information from Mcp Gsheets without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data from a spreadsheet range without creating, modifying, deleting, or executing any operations. It is a straightforward read operation with no destructive or executable capabilities. The blast radius of misuse is minimal—at worst, an agent could read sensitive data from sheets it has access to, but cannot alter or delete anything.
From the tool's definition Tool name is 'sheets_get_values' and description states 'Get values from a specified range in a Google Sheets spreadsheet'. The verb 'Get' and the lack of any modification language indicates data retrieval without side effects.
Attacks that exploit this kind of access
Get values from a specified range in a Google Sheets spreadsheet. It is categorised as a Read tool in the Mcp Gsheets MCP Server, which means it retrieves data without modifying state.
Register the Mcp Gsheets MCP server in PolicyLayer and add a rule for sheets_get_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 Gsheets. Nothing to install.
sheets_get_values is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sheets_get_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 sheets_get_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.
sheets_get_values is provided by the Mcp Gsheets MCP server (mcp-gsheets). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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