Retrieve a specific document by ID.
AI agents call get_document_by_id to retrieve information from NRTSearch 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 data from an index without modifying, deleting, or executing arbitrary code. It is a straightforward read operation that queries for a single document. The severity is low because retrieval operations have minimal blast radius—misuse would only expose existing data that is already indexed and accessible, not cause data loss, code execution, or financial impact.
From the tool's definition Tool name 'get_document_by_id' and description 'Retrieve a specific document by ID' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Retrieve a specific document by ID. It is categorised as a Read tool in the NRTSearch MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NRTSearch MCP Server MCP server in PolicyLayer and add a rule for get_document_by_id: 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 NRTSearch MCP Server. Nothing to install.
get_document_by_id 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_document_by_id 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_document_by_id. 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_document_by_id is provided by the NRTSearch MCP Server MCP server (tvergilio/nrtsearch-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.
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