AI agents call get_user_progress to retrieve information from LinguaMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries user progress statistics without creating, modifying, deleting, or executing any operations. It is a pure read operation that has no blast radius if misused by an AI agent, as it only exposes already-calculated progress data.
From the tool's definition Tool name 'get_user_progress' and description 'Get progress stats for the user — overall and today' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get progress stats for the user — overall and today. It is categorised as a Read tool in the LinguaMCP MCP Server, which means it retrieves data without modifying state.
Register the Lingua MCP server in PolicyLayer and add a rule for get_user_progress: 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 LinguaMCP. Nothing to install.
get_user_progress 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 get_user_progress 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 get_user_progress. 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.
get_user_progress is provided by the Lingua MCP server (marsmanleo/linguamcp). 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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