calculate_mode
Calculate mode (most frequent value).
This record as markdown: /tools/io-tinyfn-tinyfn/calculate-mode.md
What calculate_mode does on TinyFn
AI agents call calculate_mode to retrieve information from TinyFn without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
numbers | string | Yes | Comma-separated numbers |
Parameters from the server's own tool schema.
Why calculate_mode is rated Low
This is a deterministic mathematical/statistical utility that retrieves or computes information from provided data without modifying, executing external operations, or causing any irreversible changes. It falls squarely into the Read category. The severity is low as misuse would at worst provide incorrect statistical analysis with no external impact.
From the tool's definition The tool 'calculate_mode' performs a statistical calculation on input data to determine the most frequent value. This is a pure computational operation with no side effects, data modification, deletion, code execution, or financial implications.
Attacks that exploit this kind of access
The rule that runs calculate_mode safely
PolicyLayer is an MCP gateway: it sits between your AI agents and TinyFn, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calculate_mode, this is the rule to start with:
calculate_mode 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 TinyFn, apply this rule, and every calculate_mode call is checked against it from then on.
Questions about calculate_mode
Calculate mode (most frequent value). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
calculate_mode accepts 1 parameter: numbers. Required: numbers. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for calculate_mode: 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 TinyFn. Nothing to install.
calculate_mode 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 calculate_mode 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 calculate_mode. 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.
calculate_mode is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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