Perform an atomic cross-VM token transfer using the TNZO pointer model.
AI agents use cross_vm_transfer to commit financial operations through Tenzro Ledger MCP — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool directly moves cryptocurrency or tokens between virtual machines (likely blockchains), which constitutes a financial transaction. The 'atomic' nature indicates it cannot be partially reversed. An AI agent misusing this tool could transfer significant assets to unintended addresses or drain wallets, making this a critical-severity financial risk.
From the tool's definition 'cross_vm_transfer' performs 'atomic cross-VM token transfer' — this moves tokens/value across blockchain virtual machines, which is a financial operation that commits monetary obligations and transfers assets.
Attacks that exploit this kind of access
Perform an atomic cross-VM token transfer using the TNZO pointer model. It is categorised as a Financial tool in the Tenzro Ledger MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for cross_vm_transfer: 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 Tenzro Ledger MCP. Nothing to install.
cross_vm_transfer 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 cross_vm_transfer 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 cross_vm_transfer. 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.
cross_vm_transfer is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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