suggest_vocabulary
AI agents call suggest_vocabulary to retrieve information from MCP English Tutor without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name suggests retrieval and presentation of vocabulary data to support tutoring. No description provided, which slightly reduces confidence, but the pattern of similar read-only tools on this tutoring server and the 'suggest' verb (implying informational output rather than action) indicate a Read classification. This poses minimal risk—it retrieves educational content with no side effects.
From the tool's definition Tool name is 'suggest_vocabulary' with empty description. Based on sibling tools like 'get_topic_vocabulary' and 'get_guiding_questions', and the server's stated purpose of providing 'vocabulary recommendations', this tool retrieves vocabulary suggestions…
Attacks that exploit this kind of access
suggest_vocabulary. It is categorised as a Read tool in the MCP English Tutor MCP Server, which means it retrieves data without modifying state.
Register the MCP English Tutor MCP server in PolicyLayer and add a rule for suggest_vocabulary: 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 MCP English Tutor. Nothing to install.
suggest_vocabulary 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 suggest_vocabulary 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 suggest_vocabulary. 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.
suggest_vocabulary is provided by the MCP English Tutor MCP server (thanhlong27042003/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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