Read raw Google Sheets values for an A1 range.
AI agents call read_sheet_values to retrieve information from Google Workspace MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward read operation on Google Sheets data. It queries values from a specified range without creating, modifying, deleting, or executing any operations. The blast radius is minimal—misuse would only expose existing data the agent is already authorized to access, posing no irreversible harm.
From the tool's definition Tool name 'read_sheet_values' and description 'Read raw Google Sheets values for an A1 range' indicate a retrieval operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Read raw Google Sheets values for an A1 range. It is categorised as a Read tool in the Google Workspace MCP MCP Server, which means it retrieves data without modifying state.
Register the Google Workspace MCP server in PolicyLayer and add a rule for read_sheet_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 Google Workspace MCP. Nothing to install.
read_sheet_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 read_sheet_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 read_sheet_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.
read_sheet_values is provided by the Google Workspace MCP server (ngoquocviet2001/google-workspace-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →