Get language masters for a specific site
AI agents call fetchLanguageMasters to retrieve information from AEM MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves language master configurations for a site, which is a read-only query operation. It has no side effects, does not execute code, does not delete or modify data, and poses no financial risk. The blast radius of misuse is minimal—an agent could only retrieve information about language masters already configured in the AEM system.
From the tool's definition Tool name 'fetchLanguageMasters' and description 'Get language masters for a specific site' indicate a retrieval operation with no modification of data.
Attacks that exploit this kind of access
Get language masters for a specific site. It is categorised as a Read tool in the AEM MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AEM MCP Server MCP server in PolicyLayer and add a rule for fetchLanguageMasters: 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 AEM MCP Server. Nothing to install.
fetchLanguageMasters 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 fetchLanguageMasters 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 fetchLanguageMasters. 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.
fetchLanguageMasters is provided by the AEM MCP Server MCP server (udaykumarbpatel/aem-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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