AI agents call list_locales to retrieve information from Localise without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only lists/retrieves existing locale configuration—a pure read operation with no side effects, data modification, code execution, or destructive capability. The blast radius of misuse is minimal (information disclosure only).
From the tool's definition Tool name 'list_locales' and description 'List all locales configured in the localise.biz project' indicate a read-only query operation that retrieves configuration data without modifying or executing anything.
Attacks that exploit this kind of access
List all locales configured in the localise.biz project. It is categorised as a Read tool in the Localise MCP Server, which means it retrieves data without modifying state.
Register the Localise MCP server in PolicyLayer and add a rule for list_locales: 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 Localise. Nothing to install.
list_locales 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_locales 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_locales. 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_locales is provided by the Localise MCP server (localise-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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