This record as markdown: /tools/io-tinyfn-tinyfn/reverse-number.md
What reverse_number does on TinyFn
AI agents call reverse_number 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 |
|---|---|---|---|
number | integer | Yes | Number to reverse |
Parameters from the server's own tool schema.
Why reverse_number is rated Low
This tool performs a deterministic mathematical operation on input data and returns a result without creating, modifying, deleting, or executing anything. It is a read-only computational utility consistent with the other math and conversion tools on the TinyFn server (absolute_value, add, acres_to_hectares, etc.). No security risk from misuse - an AI agent cannot cause harm by requesting digit reversal on numbers.
From the tool's definition Tool name 'reverse_number' with description 'Reverse the digits of a number.' - a pure mathematical transformation with no side effects, no data modification, no execution of external operations.
Attacks that exploit this kind of access
The rule that runs reverse_number 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 reverse_number, this is the rule to start with:
reverse_number 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 reverse_number call is checked against it from then on.
Questions about reverse_number
Reverse the digits of a number. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
reverse_number accepts 1 parameter: number. Required: number. 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 reverse_number: 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.
reverse_number 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 reverse_number 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 reverse_number. 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.
reverse_number 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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