This record as markdown: /tools/7gugu-whistle-mcp/renamevalue.md
What renameValue does on Whistle
AI agents use renameValue 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 renameValue is rated Medium
Renaming a value is a reversible modification operation that changes metadata/configuration without deleting underlying data. This is a Write operation rather than Destructive (which would be irreversible deletion). Severity is medium because misconfiguration of proxy rules could impact network traffic handling, but the change is reversible and does not cause data loss or financial impact.
From the tool's definition Tool name 'renameValue' and description '重命名值' (rename value) indicate modification of existing data. The sibling tools include 'createValue', 'deleteValue', and other data manipulation operations, confirming this is part of a proxy configuration system where…
Attacks that exploit this kind of access
The rule that runs renameValue 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 renameValue, this is the rule to start with:
renameValue 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 renameValue call is checked against it from then on.
Questions about renameValue
重命名值. 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 renameValue: 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.
renameValue 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 renameValue 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 renameValue. 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.
renameValue 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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