Store how the user makes decisions in different areas
AI agents use add_decision_style to create or update resources in Google Workspace MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Workspace MCP Server environment.
This tool creates or modifies user preference data in a personal memory system. It has reversible effects (data can be updated or deleted later) and no side effects beyond storage. It does not execute code, move money, or permanently destroy data. Therefore, it is categorized as Write with low severity due to the limited blast radius of storing personal decision-making metadata.
From the tool's definition The tool is named 'add_decision_style' and described as 'Store how the user makes decisions in different areas'. The verb 'add' and action 'store' indicate data creation/modification.
Attacks that exploit this kind of access
Store how the user makes decisions in different areas. It is categorised as a Write tool in the Google Workspace MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for add_decision_style: 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 Server. Nothing to install.
add_decision_style 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 add_decision_style 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 add_decision_style. 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.
add_decision_style is provided by the Google Workspace MCP Server MCP server (pbulbule13/google-mcp-server). 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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