external_reference_external_references \u00b7 POST /externalReferenceExternalReferences/searchByObjects \u2014 Get object by connection. Required: from, size, q. Requires a JSON request body.
AI agents call external_reference_external_references_search_by_objects 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 is a search/retrieval operation that queries external references by object connections. POST is used for the query mechanism (common for complex search filters), but the operation is fundamentally a read operation that retrieves data without side effects. The 'read-only safety enforcement' on the server confirms no write/delete/execute capabilities are exposed through this API.
From the tool's definition Tool name contains 'search' and description states 'Get object by connection'; it performs a POST-based query operation (searchByObjects) with parameters from, size, q that retrieve data without modifying it.
Attacks that exploit this kind of access
external_reference_external_references \u00b7 POST /externalReferenceExternalReferences/searchByObjects \u2014 Get object by connection. Required: from, size, q. Requires a JSON request body. 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 external_reference_external_references_search_by_objects: 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.
external_reference_external_references_search_by_objects 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 external_reference_external_references_search_by_objects 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 external_reference_external_references_search_by_objects. 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.
external_reference_external_references_search_by_objects 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →