average
Calculate the average of a list of numbers.
This record as markdown: /tools/io-tinyfn-tinyfn/average.md
What average does on TinyFn
AI agents call average 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 average is rated Low
This is a pure computational function that performs statistical analysis on input data. It has no side effects, does not modify any state, and does not execute code or trigger external operations. It falls squarely into the Read category as it only computes and returns a result based on input parameters. The severity is low because misuse of a simple mathematical function poses minimal risk to systems or data.
From the tool's definition The tool 'average' calculates the average of a list of numbers. It retrieves and processes numerical data without modifying, deleting, or executing any external operations.
Attacks that exploit this kind of access
The rule that runs average 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 average, this is the rule to start with:
average 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 average call is checked against it from then on.
Questions about average
Calculate the average of a list of numbers. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
average 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 average: 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.
average 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 average 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 average. 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.
average 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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