number_to_words
Number to Words — Spell an integer, or a currency amount (check-writing), in English words.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/number-to-words.md
What number_to_words does on Gateway
AI agents call number_to_words to retrieve information from Gateway 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 |
|---|---|---|---|
mode | string | — | Output style |
amount | number | — | Decimal amount to spell as currency (currency mode) |
number | integer | — | Integer to spell (integer mode) |
Parameters from the server's own tool schema.
Why number_to_words is rated Low
The tool performs a deterministic read-only transformation of numeric data into text representation. Even though it mentions 'check-writing' (currency), it only formats/displays the amount; it does not process, move, or commit any financial transaction. No data is created, modified, or destroyed. Misuse by an AI agent would result in incorrect text output at worst, with negligible blast radius.
From the tool's definition Tool description states it 'Spell[s] an integer, or a currency amount (check-writing), in English words.' This is a data transformation/formatting operation with no side effects—it retrieves and converts numeric input to textual output without modifying,…
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 Gateway, 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 Gateway, apply this rule, and every number_to_words call is checked against it from then on.
Questions about number_to_words
Number to Words — Spell an integer, or a currency amount (check-writing), in English words. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
number_to_words accepts 3 parameters: mode, amount, number. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway 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 Gateway. 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 Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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