This record as markdown: /tools/7gugu-whistle-mcp/removevaluefromgroup.md
What removeValueFromGroup does on Whistle
AI agents use removeValueFromGroup to create or update resources in Whistle, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Whistle environment.
Why removeValueFromGroup is rated Medium
This tool modifies group membership by removing a value from a group, which is a reversible write operation (the value still exists, just disassociated from the group). It does not delete the value itself. Severity is medium as misconfiguration of proxy rules/groups could disrupt network traffic routing.
From the tool's definition 将值移出分组 (Remove a value from a group)
Attacks that exploit this kind of access
The rule that runs removeValueFromGroup safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Whistle, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For removeValueFromGroup, this is the rule to start with:
removeValueFromGroup 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 Whistle, apply this rule, and every removeValueFromGroup call is checked against it from then on.
Questions about removeValueFromGroup
将值移出分组. It is categorised as a Write tool in the Whistle MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Whistle MCP server in PolicyLayer and add a rule for removeValueFromGroup: 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 Whistle. Nothing to install.
removeValueFromGroup 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 removeValueFromGroup 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 removeValueFromGroup. 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.
removeValueFromGroup is provided by the Whistle MCP server (7gugu/whistle-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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