AI agents use transfer_trx to commit financial operations through Justlend — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool directly transfers cryptocurrency (TRX) from one address to another. Cryptocurrency transfers are irreversible and represent movement of financial value, meeting the definition of a Financial category tool. The severity is critical because an AI agent with misuse of this tool could drain wallets, transfer funds to attacker-controlled addresses, or cause significant financial loss. The confidence is high (0.
From the tool's definition Tool is described as 'Transfer TRX to another TRON address.' TRX is the native token of the TRON blockchain. The tool directly moves cryptocurrency between addresses, constituting a financial transaction that commits value and cannot be easily reversed.
Attacks that exploit this kind of access
Transfer TRX to another TRON address. It is categorised as a Financial tool in the Justlend MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Justlend MCP server in PolicyLayer and add a rule for transfer_trx: 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.
transfer_trx is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the transfer_trx 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 transfer_trx. 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.
transfer_trx 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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