list_spreadsheets
List spreadsheets from Google Drive that the user has access to
This record as markdown: /tools/3xcaffeine-mcp-server/list-spreadsheets.md
What list_spreadsheets does on VaultAssist
AI agents call list_spreadsheets to retrieve information from VaultAssist without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_spreadsheets is rated Low
This tool queries and returns a list of spreadsheet resources the authenticated user can access. It retrieves data without side effects, creating no modifications, deletions, or external operations. The blast radius of misuse is minimal — an agent could discover what spreadsheets exist but cannot alter, delete, or execute actions on them. Classified as Read with low severity.
From the tool's definition Tool name is 'list_spreadsheets' and description states it 'List spreadsheets from Google Drive that the user has access to' — a pure retrieval operation with no modification or deletion.
Attacks that exploit this kind of access
The rule that runs list_spreadsheets safely
PolicyLayer is an MCP gateway: it sits between your AI agents and VaultAssist, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_spreadsheets, this is the rule to start with:
list_spreadsheets is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect VaultAssist, apply this rule, and every list_spreadsheets call is checked against it from then on.
Questions about list_spreadsheets
List spreadsheets from Google Drive that the user has access to. It is categorised as a Read tool in the VaultAssist MCP Server, which means it retrieves data without modifying state.
Register the VaultAssist MCP server in PolicyLayer and add a rule for list_spreadsheets: 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 VaultAssist. Nothing to install.
list_spreadsheets 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 list_spreadsheets 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 list_spreadsheets. 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.
list_spreadsheets is provided by the VaultAssist MCP server (3xcaffeine/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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