user_invitation \u00b7 POST /userInvitation/searchByFields \u2014 Get object by connection. Required: from, size, q.
AI agents call user_invitation_search_by_fields to retrieve information from Vicarius vRx 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 invitation data based on search criteria. It is a read-only query operation with no side effects on system state. The server description notes 'read-only safety enforcement,' reinforcing this classification. Low severity due to the limited blast radius of querying user invitation records—an AI agent cannot misuse this to cause irreversible harm, execute code, or move funds.
From the tool's definition Tool name 'user_invitation_search_by_fields' and description 'Get object by connection' indicate a search/query operation. POST method used for search filters (common REST pattern). No modification, deletion, or execution capability described.
Attacks that exploit this kind of access
user_invitation \u00b7 POST /userInvitation/searchByFields \u2014 Get object by connection. Required: from, size, q. It is categorised as a Read tool in the Vicarius vRx MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Vicarius vRx MCP Server MCP server in PolicyLayer and add a rule for user_invitation_search_by_fields: 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 Vicarius vRx MCP Server. Nothing to install.
user_invitation_search_by_fields 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 user_invitation_search_by_fields 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 user_invitation_search_by_fields. 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.
user_invitation_search_by_fields is provided by the Vicarius vRx MCP Server MCP server (space-c0wboy/vicarius-vrx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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