AI agents call list_wallets 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 retrieves and displays wallet configuration data without performing any mutations, financial transactions, or external operations. It is a straightforward query operation that returns wallet metadata. The context of a financial/lending platform does not change the nature of the operation itself—listing wallets is a Read action.
From the tool's definition Tool description states 'List all wallets' and 'Shows wallet IDs, types, active status, and addresses' - purely informational retrieval with no modification, deletion, or external effects.
Attacks that exploit this kind of access
List all wallets configured in agent-wallet. Shows wallet IDs, types, active status, and addresses. 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 list_wallets: 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.
list_wallets 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 list_wallets 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 list_wallets. 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.
list_wallets 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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