This record as markdown: /tools/io-tinyfn-tinyfn/number-to-words.md
What number_to_words does on TinyFn
AI agents call number_to_words 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 convert |
Parameters from the server's own tool schema.
Why number_to_words is rated Low
This is a deterministic utility function that reads an input number and returns a string representation in words. No data is created, modified, deleted, or destroyed; no code is executed; no external operations are triggered. It is a simple conversion function consistent with the server's stated purpose of providing '500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time.'
From the tool's definition Tool name 'number_to_words' and description 'Convert a number to words' indicate a pure data transformation with no side effects, mutations, or external operations.
Attacks that exploit this kind of access
The rule that runs number_to_words 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 number_to_words, this is the rule to start with:
number_to_words 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 number_to_words call is checked against it from then on.
Questions about number_to_words
Convert a number to words. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
number_to_words 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 number_to_words: 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.
number_to_words 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_to_words 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_to_words. 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_to_words 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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