Search Nubra's public index master first, then compare the closest index rows against the exchange instrument master.
AI agents call find_index_details to retrieve information from Nubra 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 index metadata and performs comparison operations against master data sources. There are no side effects, no data modification, no code execution, and no financial transactions. It is a read-only lookup utility typical of a data inquiry service. The low severity reflects minimal blast radius if misused — an agent could only retrieve or list index information.
From the tool's definition Tool description states 'Search Nubra's public index master' and 'compare the closest index rows' — these are query/lookup operations with no mention of modification, deletion, or execution of commands.
Attacks that exploit this kind of access
Search Nubra's public index master first, then compare the closest index rows against the exchange instrument master. It is categorised as a Read tool in the Nubra MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Nubra MCP Server MCP server in PolicyLayer and add a rule for find_index_details: 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 Nubra MCP Server. Nothing to install.
find_index_details 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 find_index_details 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 find_index_details. 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.
find_index_details is provided by the Nubra MCP Server MCP server (socials-zanskar/nubra-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 →