AI agents call number_fact to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
type | string | — | trivia, math, date, year |
number | number | Yes |
Parameters from the server's own tool schema.
This tool retrieves or queries data (a fact associated with a number) without creating, modifying, executing code, deleting data, or moving money. It is a simple read-only operation with minimal security risk.
From the tool's definition Tool name 'number_fact' and description 'Get an interesting fact about a number' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get an interesting fact about a number. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
number_fact accepts 2 parameters: type, number. Required: number. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for number_fact: 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 UnClick. Nothing to install.
number_fact 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 number_fact 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 number_fact. 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.
number_fact is provided by the UnClick MCP server (@unclick/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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