AI agents call format_ordinal 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 |
|---|---|---|---|
number | integer | Yes | Number to convert to ordinal |
Parameters from the server's own tool schema.
format_ordinal performs read-only data formatting/transformation. It retrieves or computes a derived value (ordinal notation) from input without creating, modifying, deleting, executing code, or moving funds. This aligns with the Read category for utilities that compute outputs without side effects.
From the tool's definition Tool description: 'Convert a number to its ordinal form (1st, 2nd, 3rd, etc.).' This is a pure transformation utility that takes numeric input and returns a formatted string representation with no side effects, data modifications, or external operations.
Attacks that exploit this kind of access
Convert a number to its ordinal form (1st, 2nd, 3rd, etc.). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
format_ordinal 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 format_ordinal: 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.
format_ordinal 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 format_ordinal 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 format_ordinal. 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.
format_ordinal 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.
format_ordinal 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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