List the logged-in user
AI agents call GET_VISA_TRANSACTIONS to retrieve information from Travel Agent 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 user account data (listing the logged-in user and presumably associated transactions). It performs a read-only query with no side effects on data integrity. Severity is medium rather than low because it accesses personal user information and transaction history, which could be sensitive if exposed to unauthorized agents, though the read-only nature prevents direct harm.
From the tool's definition Tool description states 'List the logged-in user', which is a retrieval operation that accesses user account information without modifying data. The tool name 'GET_VISA_TRANSACTIONS' suggests querying transaction history.
Attacks that exploit this kind of access
List the logged-in user. It is categorised as a Read tool in the Travel Agent MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Travel Agent MCP Server MCP server in PolicyLayer and add a rule for GET_VISA_TRANSACTIONS: 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 Travel Agent MCP Server. Nothing to install.
GET_VISA_TRANSACTIONS 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_VISA_TRANSACTIONS 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_VISA_TRANSACTIONS. 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_VISA_TRANSACTIONS is provided by the Travel Agent MCP Server MCP server (nxgnosis/travelagentmcp). 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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