calculate_correlation
Calculate Pearson correlation coefficient.
This record as markdown: /tools/io-tinyfn-tinyfn/calculate-correlation.md
What calculate_correlation does on TinyFn
AI agents call calculate_correlation 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 |
|---|---|---|---|
x | string | Yes | Comma-separated X values |
y | string | Yes | Comma-separated Y values |
Parameters from the server's own tool schema.
Why calculate_correlation is rated Low
The tool performs a pure statistical calculation (Pearson correlation) on input data. It retrieves or computes a result without modifying state, executing arbitrary code, or triggering external operations. This is a deterministic mathematical function typical of the TinyFn server's math operations category. No data is created, deleted, or modified; only a computed metric is returned.
From the tool's definition Tool name is 'calculate_correlation' and description states it 'Calculate[s] Pearson correlation coefficient.' This is a mathematical computation on provided data with no side effects, no data modification, no code execution, and no external operations…
Attacks that exploit this kind of access
The rule that runs calculate_correlation 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_correlation, this is the rule to start with:
calculate_correlation 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_correlation call is checked against it from then on.
Questions about calculate_correlation
Calculate Pearson correlation coefficient. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
calculate_correlation accepts 2 parameters: x, y. Required: x, y. 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_correlation: 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_correlation 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_correlation 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_correlation. 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_correlation 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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