Find symbols whose latest volume is unusual relative to recent history using both ratio and z-score checks.
AI agents call find_unusual_volume 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 performs data retrieval and statistical analysis on historical volume data to identify anomalies. It does not modify data, execute trades, delete records, or move money. It is a read-only screening/analysis function that returns information to inform decision-making.
From the tool's definition Tool name is 'find_unusual_volume' and description states it 'Find[s] symbols whose latest volume is unusual relative to recent history using both ratio and z-score checks.' This is a query/analysis operation that retrieves and analyzes historical data to…
Attacks that exploit this kind of access
Find symbols whose latest volume is unusual relative to recent history using both ratio and z-score checks. 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_unusual_volume: 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_unusual_volume 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_unusual_volume 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_unusual_volume. 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_unusual_volume 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.
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