AI agents call variable_detail to retrieve information from Emovi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that retrieves information about variables in the ESRU-EMOVI 2023 social mobility survey. It has no side effects, does not execute code or commands, does not modify data, and does not involve financial transactions. The minimal blast radius (user gains information about available variables) and reversible nature confirms Read classification.
From the tool's definition Tool name 'variable_detail' and description 'Get detailed information about a specific variable' indicate a retrieval/query operation.
Attacks that exploit this kind of access
Get detailed information about a specific variable. It is categorised as a Read tool in the Emovi MCP Server, which means it retrieves data without modifying state.
Register the Emovi MCP server in PolicyLayer and add a rule for variable_detail: 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 Emovi. Nothing to install.
variable_detail 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 variable_detail 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 variable_detail. 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.
variable_detail is provided by the Emovi MCP server (lalitronico/emovi-mcp). 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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