Get virtual account details
AI agents call get_virtual_account to retrieve information from Nomba MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about a virtual account without creating, modifying, deleting, or executing transactions. It is a read-only query operation. Although the broader server context involves financial operations (payments, transfers), this specific tool only performs data retrieval.
From the tool's definition Tool name is 'get_virtual_account' and description states 'Get virtual account details', which is a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get virtual account details. It is categorised as a Read tool in the Nomba MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Nomba MCP Server MCP server in PolicyLayer and add a rule for get_virtual_account: 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 Nomba MCP Server. Nothing to install.
get_virtual_account 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_virtual_account 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_virtual_account. 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_virtual_account is provided by the Nomba MCP Server MCP server (theyahia/nomba-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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