AI agents call modulo to retrieve information from TinyFn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
a | number | Yes | Dividend |
b | number | Yes | Divisor |
Parameters from the server's own tool schema.
This is a deterministic mathematical function that performs a calculation and returns a result. It has no capability to modify data, execute arbitrary code, delete resources, or affect external systems.
From the tool's definition Tool name 'modulo' and description 'Calculate a modulo b (remainder of a divided by b)' indicate a pure mathematical operation that retrieves/computes a result without side effects, data modification, or external operations.
Attacks that exploit this kind of access
Calculate a modulo b (remainder of a divided by b). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
modulo accepts 2 parameters: a, b. Required: a, b. 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 modulo: 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.
modulo 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 modulo 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 modulo. 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.
modulo 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.
modulo is one line of TinyFn's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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