xlsx_aggregate
Aggregate values from a local XLSX (count/sum/avg/min/max) with optional filters. Deterministic, no network.
This record as markdown: /tools/io-github-homenshum-nodebench/xlsx-aggregate.md
What xlsx_aggregate does on Nodebench
AI agents call xlsx_aggregate to retrieve information from Nodebench without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why xlsx_aggregate is rated Low
This tool performs read-only aggregation operations on a spreadsheet file. It computes statistics (count, sum, average, min, max) from existing data without creating, modifying, or deleting any content. The local, deterministic nature and lack of network access further confirm it is a pure Read operation with minimal risk.
From the tool's definition Tool description specifies 'Aggregate values from a local XLSX' with operations like count/sum/avg/min/max.
Attacks that exploit this kind of access
The rule that runs xlsx_aggregate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nodebench, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For xlsx_aggregate, this is the rule to start with:
xlsx_aggregate is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nodebench, apply this rule, and every xlsx_aggregate call is checked against it from then on.
Questions about xlsx_aggregate
Aggregate values from a local XLSX (count/sum/avg/min/max) with optional filters. Deterministic, no network. It is categorised as a Read tool in the Nodebench MCP Server, which means it retrieves data without modifying state.
Register the Nodebench MCP server in PolicyLayer and add a rule for xlsx_aggregate: 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 Nodebench. Nothing to install.
xlsx_aggregate 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 xlsx_aggregate 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 xlsx_aggregate. 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.
xlsx_aggregate is provided by the Nodebench MCP server (nodebench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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