AI agents call get_vote_info to retrieve information from Justlend without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and returns information about voting power and balances—no side effects, no state changes. It is purely informational, fitting the Read category. Severity is low because even if an AI agent calls this repeatedly or in error, no harm results; the worst outcome is unnecessary API calls. Confidence is high because the description unambiguously indicates data retrieval only.
From the tool's definition Tool description states it 'Get[s] voting power info for a user' and retrieves data on 'JST wallet balance, available votes, total deposited votes, and votes currently cast in proposals.' All operations are retrieval-only with no modifications.
Attacks that exploit this kind of access
Get voting power info for a user: JST wallet balance, available (surplus) votes, total deposited votes, and votes currently cast in proposals. It is categorised as a Read tool in the Justlend MCP Server, which means it retrieves data without modifying state.
Register the Justlend MCP server in PolicyLayer and add a rule for get_vote_info: 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 Justlend. Nothing to install.
get_vote_info 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_vote_info 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_vote_info. 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_vote_info is provided by the Justlend MCP server (justlend/mcp-server-justlend). 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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